Bihar Weather Today: Cold Wave to Continue Till 29 December, Cold Day Warning for Patna, Siwan & Other Districts

Bihar is set to celebrate Christmas and year-end under the grip of a persistent cold wave, with the Meteorological Centre, Patna, making it clear that there will be no major relief from the chill till at least 29 December. Despite some sunshine returning to parts of the state, icy westerly winds continue to keep people shivering and “cold day” conditions in place across many districts.

Cold winds increase chill across Bihar

According to the latest update, cold north-westerly/pachhua winds have intensified the feeling of chill in Patna and surrounding districts. Although clear skies allowed sunlight to break through on Wednesday, the wind prevented temperatures from rising enough to give real comfort.

The India Meteorological Department (IMD) has already issued cold wave and cold day alerts for several parts of Bihar, pointing out that both day and night temperatures are likely to stay below normal for a few more days. Dense fog in the early morning and late night is compounding the impact of the cold, affecting road and rail traffic.

Temperatures rise slightly, but cold day persists

In Patna and nearby districts, there has been a slight increase in maximum temperatures thanks to sunshine during the day. In the last 24 hours, Patna’s maximum temperature jumped by about 4.7 degrees Celsius, reaching around 19.2°C. This is still below the seasonal normal (usually 22–24°C in late December), so IMD continues to classify conditions as “cold day” in many locations.

Interestingly, the highest maximum temperature in the state during this period was recorded at Ziradei in Siwan district, where the day temperature touched about 20.3°C. Even this is only modest relief when combined with cold winds and low morning minima.

Cities showing a similar pattern of marginal daytime warming include Buxar, Chhapra, Samastipur, Vaishali, Munger and Darbhanga, all of which have recorded a small rise in day temperatures after brief sunny spells.

IMD forecast: Cold day conditions till 29 December

The Meteorological Centre in Patna has clearly indicated that no significant change in Bihar’s weather is expected before 29 December. This means:

• Cold day-like conditions will continue in many districts.
• Maximum temperatures may remain 5°C below normal in some areas.
• Minimum temperatures are likely to stay below 10°C in several districts.

National and regional bulletins also suggest that dense fog and cold day conditions over Bihar are likely to persist till around 28–29 December, with only a gradual improvement expected after that.

What is a “cold day” and why is Bihar under warning?

A cold day is declared when the maximum (day) temperature is significantly below normal, usually by 4–6 degrees, often accompanied by dense fog and cold winds. In Bihar right now:

• Many places are seeing day temperatures 4–5°C below normal levels.
• Morning fog prevents sunlight from heating the surface.
• Westerly winds bring cold, dry air, which increases the feeling of chill.

Because of this, even when the sun appears for a while, people continue to feel intense cold throughout the day, especially the elderly, children and outdoor workers.

Impact on daily life and precautions

The extended cold spell is affecting normal life across Bihar:

• Early morning and late evening fog is causing poor visibility, slowing down traffic and increasing the risk of road accidents.

People are relying heavily on bonfires (alav), warm clothing and indoor heating to cope with the chill.

Outdoor work, school routines and early-morning markets are all under stress due to biting cold and fog.

Authorities and weather agencies have advised residents to:

• Wear multiple layers of warm clothing.
• Avoid unnecessary early-morning and late-night travel.
• Use fog lights and drive slowly during low visibility.
• Take special care of children, senior citizens and people with respiratory or heart problems.

Outlook for the next few days

Based on IMD forecasts, Bihar is likely to remain under the influence of cold wave and cold day conditions till 29 December, with dense fog in many districts. A slight improvement in both minimum and maximum temperatures is expected only after 30 December, but winter chill will continue into January as usual for the region.

For now, residents planning Christmas and year-end outings in Bihar should be prepared for chilly days, foggy mornings and evenings, and limited sunshine. Warm clothes, hot drinks and cautious travel are going to be essential companions until the cold wave weakens.