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Weather Update: Monsoon Nears Kerala as Heavy Rains Lash Karnataka, Tamil Nadu, Maharashtra; Heatwave Grips Delhi, Rajasthan and Haryana – Check Full Forecast Here

IMD has forecast the onset of the southwest monsoon over Kerala soon, with widespread rainfall likely across southern and northeastern states. Heatwave and duststorm warnings remain in effect for parts of Rajasthan, Haryana, and adjoining regions.

KJ Staff
The IMD has stated that conditions are turning favorable for the onset of the southwest monsoon over Kerala in the next 4–5 days.
The IMD has stated that conditions are turning favorable for the onset of the southwest monsoon over Kerala in the next 4–5 days.

Weather conditions across India are set to become dramatic, as the India Meteorological Department (IMD) forecasts heavy to very heavy rainfall along the west coast. This includes states such as Karnataka, Konkan & Goa, and Kerala, with extremely heavy downpours expected in North Kerala and the coastal and Ghat areas of Karnataka. Additionally, conditions are becoming favorable for the onset of the southwest monsoon over Kerala in the next 4 to 5 days.

Meanwhile, Northeast India and Sub-Himalayan West Bengal and Sikkim are expected to experience intense rainfall along with thunderstorms and lightning over the next three days. Parts of Rajasthan are preparing for heat wave to severe heat wave conditions, creating a stark weather divide across the country. Here are the details

Monsoon Set to Arrive in Kerala within 4–5 Days

The IMD has stated that conditions are turning favorable for the onset of the southwest monsoon over Kerala in the next 4–5 days. Widespread rainfall is already drenching coastal and ghat areas of Karnataka and Kerala, signaling the monsoon’s early progress.

Region

Forecast

Kerala

Likely monsoon onset within 4–5 days

Lakshadweep, Tamil Nadu

Monsoon likely to advance soon

South & Central Bay of Bengal

Monsoon advance expected

Northeast India

Favorable for monsoon progression

Cyclonic Activity and Rainfall Triggers

Multiple upper air cyclonic circulations are influencing weather across India:

  • A low-pressure area is forming over the east-central Arabian Sea (off Karnataka coast).

  • Cyclonic circulations are also present over Pakistan, Assam, Bangladesh, and South Interior Karnataka, triggering local weather systems.

These systems are expected to move and intensify rainfall over the west coast and central India, while also pushing monsoon clouds further inland.

Heavy Rainfall over South India

Several cyclonic circulations and a developing low-pressure area over the Arabian Sea are driving widespread rain and thunderstorms over South India, especially Kerala, Karnataka, Tamil Nadu, and Andhra Pradesh.

State/Region

Expected Weather

North Kerala

Extremely heavy rain on 21th May

Coastal Karnataka

Extremely heavy rain on 21st May

South Interior Karnataka

Heavy rain on 25th & 26th May

Ghat Areas of Tamil Nadu

Heavy rain on 21th May

Andhra Pradesh & Rayalaseema

Heavy showers on 21th–22nd May

West Coast Braces for More Rain and Gusty Winds

The Konkan & Goa, Madhya Maharashtra, and Marathwada regions are likely to experience widespread rainfall, thunderstorms, and strong wind gusts this week. Konkan & Goa will see some of the highest rainfall activity.

Region

Forecast (21–26 May 2025)

Konkan & Goa

Very heavy rainfall 21th–24th, heavy on 25th–26th

Madhya Maharashtra

Heavy rain 21st–24th May

Marathwada

Thunderstorms & heavy rain on 21st May

Gujarat (Saurashtra, Kutch)

Isolated heavy rain on 23rd–24th May

 

Northeast and East India to Witness Thunderstorms and Flood-like Conditions

Northeast India is in for another spell of heavy to very heavy rainfall, especially in Assam, Meghalaya, and Arunachal Pradesh, increasing the risk of localised flooding. The Sub-Himalayan West Bengal and Sikkim will also be drenched.

Region

Rainfall Forecast (21–26 May 2025)

Assam & Meghalaya

Very heavy rain on 21st; heavy rain all week

Arunachal Pradesh

Heavy rain 22nd–26th May

Nagaland, Manipur, Mizoram

Heavy rainfall all week

Sub-Himalayan West Bengal & Sikkim

heavy rain till 22nd

Bihar, Jharkhand, Odisha

Thunderstorms & heavy rain till 24th May

Central and Northwest India: Mix of Rain, Heat, and Duststorms

While parts of Madhya Pradesh, Chhattisgarh, and Uttar Pradesh will see scattered rainfall, Rajasthan and surrounding regions will suffer intense heatwave conditions and duststorms.

Region

Weather Outlook

West/East Rajasthan

Severe heatwave 21th–23rd; Duststorms 21st–26th

East UP & Uttarakhand

Hailstorm and heavy rain on 21th

Uttarakhand

Heavy rain on 23rd & 24th

Chhattisgarh

Thunderstorms 21st–23rd May

Madhya Pradesh

Gusty winds & rain 22nd–23rd

 

Delhi/NCR to See Thunderstorms, Dust-Raising Winds

Delhi is currently experiencing above-normal temperatures but can expect relief through thunderstorms and dust-laden winds over the next three days. Temperatures may drop slightly with chances of light rainfall and gusty winds.

Date

Max Temp (°C)

Min Temp (°C)

Weather Conditions

21 May

38–40

27–29

Light rain with thunderstorm & gusty winds

22 May

38–40

26–28

Thunderstorm, dust-raising winds continue

Temperature Trends and Heatwave Alerts

According to IMD, heatwave to severe heatwave conditions will prevail over West Rajasthan, East Rajasthan, and South Haryana. Warm nights are expected in Punjab, South Haryana, and parts of Rajasthan.

Region

Date Range

Conditions

West Rajasthan

21th–23rd May

Severe heatwave

East Rajasthan

21st May

Heatwave

South Haryana

21th–22nd May

Heatwave, warm night

Punjab

21th–22nd May

Warm night conditions

Odisha

21st May

Hot & humid conditions

With the monsoon knocking on Kerala’s door, farmers and residents in rain-deficient areas can expect relief soon. Stay updated with IMD advisories and local forecasts to stay safe during storms, lightning, or heatwaves.

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