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All-India IMD monsoon forecast and satellite cloud cover analysis for August 9, 2026.

IMD Weather Forecast August 9, 2026: Rain Alerts & State Guide

All-India IMD Weather Bulletin: Comprehensive Forecast for August 9, 2026

The India Meteorological Department (IMD) has issued an exhaustive, research-verified national weather forecast for Sunday, August 9, 2026, keeping 26 states and Union Territories under active monsoon alerts. Driven by a complex atmospheric setup—including a well-marked Low Pressure Area formed over south Gangetic West Bengal and adjoining north Odisha, a southward-tilted monsoon trough, an active Western Disturbance operating over the northern latitudes, and strong lower-tropospheric westerly winds streaming across the Arabian Sea—widespread monsoonal precipitation is sweeping across the Indian subcontinent.

High-vigil weather designations—including Orange Alerts for Heavy to Very Heavy Rainfall (12 cm to 20 cm in 24 hours)—have been enforced for Uttarakhand, Chhattisgarh, Kerala, West Madhya Pradesh, East Madhya Pradesh, and parts of North East India. Concurrently, Yellow Alerts for Heavy Rainfall (7 cm to 11 cm in 24 hours) cover 20 additional states spanning the Western Himalayas (Himachal Pradesh, Jammu & Kashmir, Punjab, Haryana, Chandigarh), the Gangetic plains (Uttar Pradesh, Bihar, Jharkhand, West Bengal), Central & Western India (East & West Rajasthan, Odisha, Maharashtra, Gujarat), South Peninsular India (Coastal Karnataka, South Interior Karnataka, Coastal Andhra Pradesh, Tamil Nadu), and the Northeastern states (Assam, Meghalaya, Arunachal Pradesh, Nagaland, Manipur, Mizoram, Tripura). Severe downpours, localized flash flooding, cloud-to-ground lightning (vajrapat), and squally surface winds gusting up to 60 km/h are expected across vulnerable catchments.

This report presents a fully verified, state-by-state and district-level meteorological analysis, synoptic evaluation, emergency deep-dives into high-risk alert zones, oceanographic marine warnings, and city-by-city weather metrics for August 9, 2026.

1. Synoptic Atmospheric Dynamics: August 9, 2026

The Southwest Monsoon system across the Indian subcontinent on Sunday, August 9, 2026, is governed by an active multi-vortex atmospheric setup connecting Bay of Bengal low-pressure circulations, an active Himalayan Western Disturbance, and strong Arabian Sea lower-tropospheric wind streams:

A. Low Pressure Area over South Gangetic West Bengal & North Odisha

The primary synoptic driver on August 9, 2026, is a newly formed Low Pressure Area over south Gangetic West Bengal and adjoining north Odisha. The associated upper-air cyclonic circulation extends up to 7.6 km above mean sea level, tilting southwards with height. This low-pressure center acts as a vacuum, drawing warm, moisture-laden air masses from the Bay of Bengal and funneling them across Odisha, Jharkhand, Bihar, Chhattisgarh, and East Madhya Pradesh.

B. Monsoon Trough Realignment

The monsoon trough at mean sea level exhibits an asymmetric orientation on August 9. The western segment passes through its normal position across Northwest India, while the eastern end dips southwards directly into the low-pressure center over Gangetic West Bengal and north Odisha. This positioning creates intense moisture convergence across the Gangetic plains and Central India, fueling organized mesoscale convective systems (MCS).

C. Western Disturbance & Northern Upper-Air Trough

In northern latitudes, a Western Disturbance operating as a trough in the middle and upper tropospheric westerlies persists along Longitude 73°E to the north of Latitude 29°N. The interaction between this upper-level disturbance and incoming easterly monsoon winds generates heavy convective precipitation across Uttarakhand, Himachal Pradesh, Punjab, Haryana, Chandigarh, and Northwest Uttar Pradesh.

D. The Arabian Sea Westerly Jet & Offshore Trough

Parallel to the western littoral, an active offshore trough extends along mean sea level from South Gujarat down to the North Kerala coastline. Driven by strong lower-tropospheric westerly winds blowing at 40 to 50 km/h with gusts reaching 60 km/h, this marine jet pushes thick cloud bands directly against the windward slopes of the Western Ghats, generating heavy downpours across Konkan, Goa, Coastal Karnataka, and Kerala.

Radar imagery showing monsoonal low-pressure convergence over Bay of Bengal and Arabian Sea jet streams.

2. Emergency High-Alert Deep Dives: Orange Alert & Very Heavy Rainfall Zones

A critical priority for August 9, 2026, is monitoring high-vulnerability alert zones where saturated ground conditions, swelling river catchments, and steep-slope topography create significant hazards.

A. Kerala & Mahe: 7-District Orange Alert Deep Dive

Following continuous monsoonal downpours that recorded up to 17 cm of rainfall in Chemberi (Kannur district) over the preceding 24 hours, the IMD has issued a severe Orange Alert across seven central and northern districts of Kerala on Sunday, August 9, 2026:

• Orange Alert Districts (August 9): Kasaragod, Kannur, Kozhikode, Wayanad, Ernakulam, Idukki, Kottayam, and Alappuzha. 24-hour rainfall accumulations in these districts are projected to reach 12 cm to 20 cm.
• Yellow Alert Districts (August 9): Pathanamthitta, Thrissur, Palakkad, Malappuram, Kollam, and Thiruvananthapuram remain under watch for heavy rainfall measuring 7 cm to 11 cm.

Hydrological Status & Reservoir Inflows: Water levels in the Pamba, Periyar, Meenachil, Bharathapuzha, and Chaliyar rivers remain high. Hydrometeorological teams are actively monitoring storage levels at the Idukki Hydroelectric Reservoir, Mullaperiyar Dam, and Idamalayar Dam. District administrations have warned residents living near riverbanks and downstream spillways.

Landslide & Slope Hazard Vulnerability: High-range hill passages along the Western Ghats—including Wayanad (Vythiri, Lakkidi, Meppadi), Idukki (Munnar, Peerumade, Devikulam), and Kannur (Iritty, Ayyankunnu)—carry severe risks of mudslides, soil slips, and falling rocks. Night travel along mountain highways remains restricted by local police authorities.

B. Uttarakhand & Himachal Pradesh: Himalayan Slope Vulnerability

The convergence of the Western Disturbance and monsoonal moisture creates a high-risk landscape across the Western Himalayas on August 9:

Uttarakhand (Orange Alert): The IMD has designated an Orange Alert for Heavy to Very Heavy Rainfall (12 cm to 20 cm) across Dehradun, Nainital, Uttarkashi, Chamoli, Pauri Garhwal, and Pithoragarh districts on August 9. Saturated soil profiles elevate flash flood risks along watersheds feeding the Alaknanda, Bhagirathi, Yamuna, and Mandakini rivers. Landslides and rockfalls are likely along National Highway 58 (Rishikesh-Badrinath) and National Highway 109 (Rudraprayag-Kedarnath).

Himachal Pradesh (Heavy Rain Alert): Kangra, Kullu, Mandi, Shimla, Sirmaur, and Chamba districts are under a Heavy Rainfall Alert (7 cm to 11 cm). Mudslides and rockfalls present driving hazards along the Kalka-Shimla highway (NH-5) and Mandi-Kullu road network.

C. Chhattisgarh & Madhya Pradesh: Central Indian Flood Watch

Driven by the low-pressure system over Gangetic West Bengal and north Odisha, rainbands are concentrating heavily over Central India on August 9:

Chhattisgarh (Orange Alert): The IMD has issued an Orange Alert for Heavy to Very Heavy Rainfall (12 cm to 20 cm) over Chhattisgarh on August 9. Districts under high watch include Raipur, Durg, Dhamtari, Kanker, Bastar, and Surguja. River levels in the Mahanadi and Indravati basins are surging rapidly.

Madhya Pradesh (Heavy Rain Watch): Both West Madhya Pradesh and East Madhya Pradesh are under an Orange / Yellow Warning for Heavy Rainfall (7 cm to 11 cm, isolated very heavy). Districts including Bhopal, Indore, Ujjain, Jabalpur, Mandla, and Balaghat will see continuous downpours accompanied by thunderstorms and gusty winds.

D. Gangetic Plains: Uttar Pradesh, Bihar & Jharkhand Lightning Alerts

Inward moisture convergence from the Bay of Bengal is maintaining active convective storms over the plains of Uttar Pradesh, Bihar, and Jharkhand.

Uttar Pradesh: A Heavy Rain & Lightning Alert covers Lucknow, Ayodhya, Barabanki, Gonda, Bahraich, Gorakhpur, Varanasi, Prayagraj, Bareilly, and Moradabad on August 9. Cloud-to-ground lightning (vajrapat) presents severe hazards in open agricultural fields.

Bihar & Jharkhand: Districts including Gopalganj, Siwan, Kishanganj, Supaul, West Champaran, Ranchi, Jamshedpur, and Dhanbad are under a Heavy Rain Watch (7 cm to 11 cm). Farmers and outdoor workers are advised to seek shelter inside sturdy structures during afternoon thunderstorm formations.

3. Comprehensive State-by-State Regional Forecast: August 9, 2026

Northwest India (Delhi-NCR, UP, Punjab, Haryana, HP, UK, J&K, Rajasthan)

A. Delhi-NCR (Delhi, Noida, Gurugram, Faridabad, Ghaziabad)
Maximum Temperature: 33.0°C to 35.0°C | Minimum Temperature: 23.0°C to 25.0°C
Relative Humidity: 75% – 88% | Wind Speed: 15 to 20 km/h (Easterly/Southeasterly)
Expected 24-Hour Rainfall: 15 mm to 35 mm (Generally cloudy sky, light rain spell at a few places during early morning/afternoon)
IMD Alert Status: Yellow Watch
Detailed Outlook: National Capital Region (Delhi-NCR) will experience a generally cloudy sky on Sunday, August 9. A spell of light rainfall is expected at a few places during the early morning and afternoon hours. Temperatures will remain comfortable with the maximum temperature hovering between 33°C and 35°C, while the minimum temperature stays between 23°C and 25°C. Easterly surface winds blowing up to 20 km/h will keep conditions humid. Localized waterlogging in low-lying transit underpasses (Minto Bridge, Zakhira, Delhi-Gurugram Expressway) may cause minor traffic slowdowns.

B. Uttar Pradesh (East & West UP Belts)
Maximum Temperature: 33.5°C (Lucknow) | Minimum Temperature: 26.5°C
Expected 24-Hour Rainfall: 35 mm to 85 mm (Heavy Rain at isolated places)
IMD Alert Status: Yellow Alert (East & West UP)
Detailed Outlook: Fairly widespread rainfall is forecasted across Uttar Pradesh on August 9. Heavy downpours accompanied by thunderstorms and lightning are predicted across Lucknow, Sitapur, Hardoi, Ayodhya, Gonda, Bahraich, Bareilly, Moradabad, Varanasi, and Prayagraj. Low-lying agricultural fields in the Gangetic plains face temporary standing water buildup.

C. Himachal Pradesh & Uttarakhand
Maximum Temperature: 22.0°C (Shimla) / 27.0°C (Dehradun) | Minimum Temperature: 17.0°C
Expected 24-Hour Rainfall: 70 mm to 140 mm (Heavy to Very Heavy Rain)
IMD Alert Status: ORANGE ALERT (Uttarakhand) / YELLOW ALERT (Himachal Pradesh)
Detailed Outlook: Widespread rainfall is expected across Himachal Pradesh and Uttarakhand on August 9. Isolated very heavy falls (12 cm to 20 cm) are likely over Dehradun, Nainital, Uttarkashi, Chamoli, and Pithoragarh. Landslide risks remain high along mountain highway networks.

D. Punjab, Haryana & Chandigarh
Maximum Temperature: 32.5°C | Minimum Temperature: 25.0°C
Expected 24-Hour Rainfall: 20 mm to 55 mm
IMD Alert Status: Yellow Alert
Detailed Outlook: Fairly widespread rainfall is expected across Punjab, Haryana, and Chandigarh on August 9. Gusty surface winds of 30 to 40 km/h accompanied by isolated lightning strikes are predicted.

E. Rajasthan (East & West Rajasthan)
Maximum Temperature: 32.0°C (Jaipur) | Minimum Temperature: 25.8°C
Expected 24-Hour Rainfall: 40 mm to 100 mm (Heavy in East Raj)
IMD Alert Status: Yellow / Orange Alert (East Rajasthan)
Detailed Outlook: Overcast conditions with periodic rain spells will prevail across Rajasthan on August 9. Heavy rainfall is likely at isolated places over East Rajasthan (Kota, Baran, Jhalawar, Udaipur), while West Rajasthan will see moderate showers with gusty winds.

West & Central India (Maharashtra, Gujarat, MP, Chhattisgarh)

A. Maharashtra (Mumbai, Konkan, Madhya Maharashtra, Vidarbha)
Maximum Temperature: 30.0°C (Mumbai) | Minimum Temperature: 26.2°C
Expected 24-Hour Rainfall: 50 mm to 110 mm (Heavy Spells in Konkan & Ghats)
IMD Alert Status: Yellow Alert (Konkan, Madhya Maharashtra & Vidarbha)
Detailed Outlook: Active monsoon conditions will bring cloudy skies and intermittent rainfall across Konkan, Mumbai, Thane, Palghar, Raigad, Madhya Maharashtra ghats, and Vidarbha on August 9. Heavy downpours accompanied by gusty westerly winds reaching 40 to 50 km/h are expected.

B. Gujarat State (Gujarat Region, Saurashtra & Kutch)
Maximum Temperature: 32.5°C (Ahmedabad) | Minimum Temperature: 26.2°C
Expected 24-Hour Rainfall: 15 mm to 40 mm (Light to Moderate, isolated thunder)
IMD Alert Status: Yellow Watch
Detailed Outlook: Gujarat will see a mix of cloudy skies and passing showers on August 9. Light to moderate rain with isolated thunderstorms and lightning is expected, particularly in southern coastal districts.

C. Madhya Pradesh & Chhattisgarh
Maximum Temperature: 31.0°C (Bhopal) | Minimum Temperature: 23.8°C
Expected 24-Hour Rainfall: 60 mm to 140 mm (Very Heavy in Chhattisgarh & MP)
IMD Alert Status: ORANGE ALERT (Chhattisgarh) / YELLOW ALERT (East & West MP)
Detailed Outlook: Central India will witness widespread rainfall on August 9. Heavy to very heavy rainfall accompanied by thunderstorms, lightning, and gusty winds (30–40 km/h gusting to 50 km/h) is forecasted over Chhattisgarh, while East and West MP will receive steady heavy monsoonal showers.

Urban transportation infrastructure during heavy monsoon downpours and low-lying waterlogging.

East & Northeast India (Bihar, Jharkhand, Odisha, W. Bengal, Assam, NE)

A. Bihar & Jharkhand
Maximum Temperature: 33.2°C (Patna) / 30.2°C (Ranchi) | Minimum Temperature: 24.8°C
Expected 24-Hour Rainfall: 40 mm to 90 mm (Heavy Rain)
IMD Alert Status: Yellow Alert (Bihar & Jharkhand)
Detailed Outlook: Moderate to intense lightning activity (vajrapat) is predicted over Bihar and Jharkhand on August 9. Fairly widespread rainfall with isolated heavy spells will affect Ranchi, Jamshedpur, Patna, Gopalganj, Siwan, and northern Bihar districts.

B. Odisha & Gangetic West Bengal
Maximum Temperature: 33.5°C (Kolkata) | Minimum Temperature: 26.8°C
Expected 24-Hour Rainfall: 50 mm to 110 mm (Heavy Rain)
IMD Alert Status: Yellow Alert (Odisha & Gangetic WB)
Detailed Outlook: Influenced by the low pressure area over south Gangetic West Bengal and north Odisha, widespread heavy rainfall is expected on August 9. Thunderstorms, lightning, and gusty winds (30–40 km/h) are predicted across coastal and northern Odisha districts and Gangetic West Bengal.

C. Sub-Himalayan West Bengal, Sikkim & Northeastern States
Maximum Temperature: 29.8°C (Guwahati) | Minimum Temperature: 24.8°C
Expected 24-Hour Rainfall: 50 mm to 120 mm (Heavy to Very Heavy Rain)
IMD Alert Status: Yellow Alert (Assam, Meghalaya, Nagaland, Manipur, Mizoram, Tripura)
Detailed Outlook: Assam, Meghalaya, Arunachal Pradesh, Nagaland, Manipur, Mizoram, and Tripura face active rainfall spells on August 9. Isolated heavy rainfall (7 cm to 11 cm) is forecasted across the Northeastern states and Sub-Himalayan West Bengal & Sikkim. River levels across the Brahmaputra and Barak basins remain under watch.

South Peninsular India & Islands (Kerala, KA, TN, AP, TS, Lakshadweep, A&N)

A. Kerala & Mahe
Maximum Temperature: 28.5°C | Minimum Temperature: 24.0°C
Expected 24-Hour Rainfall: 70 mm to 140 mm (Heavy to Very Heavy Rain)
IMD Alert Status: ORANGE WARNING (7 Districts: Kasaragod, Kannur, Kozhikode, Wayanad, Ernakulam, Idukki, Kottayam)
Detailed Outlook: Rain or thundershowers will occur at most places in Kerala on August 9. Heavy to very heavy rainfall (12 to 20 cm in 24 hours) is very likely at isolated places across the seven Orange Alert districts. Strong surface winds with speeds occasionally reaching 40–50 km/h will prevail over Kerala, Lakshadweep, and Mahe.

B. Coastal & Interior Karnataka
Maximum Temperature: 27.5°C (Mangaluru) / 26.5°C (Bengaluru) | Minimum Temperature: 20.0°C
Expected 24-Hour Rainfall: 80 mm to 150 mm (Coastal KA & South Int KA)
IMD Alert Status: Yellow / Orange Alert (Coastal & South Interior KA)
Detailed Outlook: Isolated heavy to very heavy rainfall is likely over Coastal Karnataka and South Interior Karnataka on August 9. Strong surface winds gusting to 60 km/h are predicted along the coastline.

C. Tamil Nadu, Andhra Pradesh & Telangana
Maximum Temperature: 37.5°C (Chennai) | Minimum Temperature: 28.0°C
Expected 24-Hour Rainfall: 10 mm to 35 mm (Coastal AP & Telangana)
IMD Alert Status: Yellow Watch (Thunderstorms & Gusty Winds)
Detailed Outlook: Isolated thunderstorms accompanied by lightning and gusty surface winds are expected over Coastal Andhra Pradesh & Yanam, Telangana, Rayalaseema, and Tamil Nadu on August 9. Chennai will remain warm and humid with isolated passing showers.

D. Lakshadweep Archipelago & Andaman Islands
Maximum Temperature: 29.0°C (Kavaratti) | Minimum Temperature: 25.0°C
Expected 24-Hour Rainfall: 40 mm to 80 mm
IMD Alert Status: Yellow Alert & Wind Warning
Detailed Outlook: Rain or thundershowers will occur at many places in Lakshadweep on August 9. Strong surface winds of 40–50 km/h gusting to 60 km/h will prevail. In Andaman & Nicobar Islands, isolated heavy rainfall and thunderstorms are forecasted.

4. INCOIS Coastal, Marine & High Wave Surge Warnings (Kallakkadal)

The Indian National Centre for Ocean Information Services (INCOIS) and IMD have issued marine alerts for August 9, 2026:

Kerala Kallakkadal Swell Surge Alert: INCOIS forecasts swell surge waves measuring 1.1 to 1.4 meters with a peak wave period of 15.0 to 18.0 seconds off the Thiruvananthapuram, Kollam, and Alappuzha coastlines. Low-lying nearshore infrastructure faces localized seawater splash and inundation.

Fishermen & Marine Restrictions: Authorities have issued an absolute prohibition on sea departures off Kerala, Lakshadweep, and Coastal Karnataka due to squally winds reaching 60 km/h.

5. Master National 25-City Weather Matrix (August 9, 2026)

The table below consolidates forecast metrics across 25 major Indian cities for Sunday, August 9, 2026:

Coastal marine safety surveillance and fishermen advisories along the Arabian Sea coast.

6. Actionable NDMA & IMD Public Safety Directives

Given the severe weather advisories issued for August 9, 2026, the National Disaster Management Authority (NDMA) and IMD recommend the following safety measures:

Urban Inundation Safety: In cities under Orange or Yellow alerts (Dehradun, Raipur, Kochi, Lucknow, Patna, Mumbai), do not attempt to cross flooded underpasses or low-lying roads where water depth is unknown.

Kallakkadal / Swell Surge Safety: Coastal residents along Thiruvananthapuram, Kollam, and Alappuzha must avoid nearshore structures and secure fishing gear away from high-tide splash zones.

Himalayan Landslide Safety: Tourists and commuters in Himachal Pradesh and Uttarakhand should monitor local district collectorate advisories before traveling through mountain highways.

Lightning Protection: In rural areas across Bihar, Uttar Pradesh, and Jharkhand, farm workers should seek immediate shelter inside permanent structures when thunder is heard.

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