Bihar Weather Update: Heavy Rain Alert for Eight Districts on October 29 and 30, Thunderstorms May Affect Chhath Puja

Patna, October 27, 2026 (Udaipur Kiran): Weather conditions in Bihar are expected to change following the withdrawal of the monsoon. An active weather system over the Bay of Bengal may bring rain to several districts between October 27 and November 1, accompanied by thunderstorms, lightning and strong winds.

According to the forecast issued by the Meteorological Centre in Patna, heavy rainfall is possible in some districts on October 29 and 30. The changing weather may also affect Chhath Puja celebrations. Devotees planning to visit riverbanks and other worship sites should keep track of the latest weather updates.

Thunderstorms and Strong Winds Likely in Patna on October 27

Most districts of Bihar may experience warm and relatively dry weather on October 27. However, some areas of Patna and the southwestern and south-central parts of the state may witness thunderstorms and strong winds.

Wind speeds could reach 30 to 40 kilometres per hour.

On October 28, weather conditions may deteriorate in parts of southwestern, south-central and southeastern Bihar. Rain, lightning and strong winds are possible in these areas.

Heavy Rain Alert for Eight Districts on October 29 and 30

According to the weather department’s forecast, heavy rainfall is possible in the following districts:

• October 29: Gaya, Aurangabad, Bhabua and Rohtas.
• October 30: Buxar, Gopalganj, Siwan and West Champaran.

Thunderstorms and lightning may accompany the rainfall. People are advised to avoid open fields and standing under trees during thunderstorms.

Bihar Weather Forecast from October 27 to November 1

The weather is likely to remain variable across Bihar over the coming days.

• October 27: Warm and mostly dry conditions are expected in most districts, with thunderstorms and strong winds possible in some areas.
• October 28: Rain is possible in parts of southwestern, south-central and southeastern Bihar.
• October 29: Rain is likely in several districts, with a heavy rainfall alert for Gaya, Aurangabad, Bhabua and Rohtas.
• October 30: Heavy rainfall is possible in Buxar, Gopalganj, Siwan and West Champaran.
• October 31: Some areas may experience rain and lightning.
• November 1: Thunderstorms and rain are possible in some districts.

Bihar Temperature Forecast: Maximum Temperature Around 30–33°C

Despite the possibility of rain, maximum temperatures in Bihar may remain around 30 to 33 degrees Celsius. Mornings and nights are expected to be relatively comfortable, although daytime conditions may continue to feel warm.

The forecast indicates the following maximum and minimum temperatures:

• Patna: 32°C maximum and 22°C minimum
• Begusarai: 32°C maximum and 20°C minimum
• Bhagalpur: 31°C maximum and 21°C minimum
• Gaya: 32°C maximum and 20°C minimum
• Muzaffarpur: 32°C maximum and 20°C minimum
• Darbhanga: 33°C maximum and 20°C minimum

Rain May Bring Relief from Heat

Daytime temperatures between 30 and 33 degrees Celsius may continue to cause warm conditions. However, rainfall on October 29 and 30 could bring down maximum temperatures by 2 to 4 degrees Celsius, making the weather more pleasant.

A slight chill may also be felt during the morning and evening hours.

Will Rain Affect Chhath Puja in Bihar?

Rain remains a possibility during the Chhath Puja period. The forecast for October 31 and November 1 indicates the likelihood of rain and thunderstorms in some areas.

However, the weather department’s current forecast does not establish whether conditions will remain clear throughout the festival or whether rainfall will occur at specific worship locations.

Devotees planning to visit riverbanks and other Chhath Puja sites should monitor the latest forecasts. They should take precautions if warnings for thunderstorms or lightning are issued.

FAQ Section

1. When is rain expected in Bihar?

Rain is possible in several districts between October 27 and November 1, with heavy rainfall likely in some districts on October 29 and 30.

2. Which districts may receive heavy rain on October 29?

Gaya, Aurangabad, Bhabua and Rohtas may receive heavy rainfall on October 29.

3. Which districts are under a heavy rain alert for October 30?

Buxar, Gopalganj, Siwan and West Champaran may receive heavy rainfall on October 30.

4. Will Patna receive rain on October 27?

Patna may experience thunderstorms and strong winds, although most of Bihar is expected to remain warm and relatively dry.

5. How fast could winds blow in Bihar?

Wind speeds may reach 30 to 40 kilometres per hour in some areas on October 27.

6. What will be the maximum temperature in Patna?

Patna’s maximum temperature is forecast to be around 32 degrees Celsius, with a minimum of 22 degrees Celsius.

7. Could rain affect Chhath Puja celebrations?

Rain and thunderstorms are possible in some areas on October 31 and November 1, so devotees should monitor updated weather forecasts.

8. How much could temperatures fall after rainfall?

Maximum temperatures could fall by 2 to 4 degrees Celsius during the expected rainfall on October 29 and 30.