Bihar’s weather is set to change during the Chhath festival, with the likelihood of cold temperatures and fog, along with a possibility of rain. This change will affect several regions, including Patna, Gaya, Bhagalpur, and Muzaffarpur. Let’s explore how the weather will impact the state during the upcoming days, especially during the Chhath celebrations.

Bihar’s Weather During Chhath Festival

Patna, Bihar – Weather Forecast for October 26, 2025:
The Chhath festival, which holds great significance in Bihar, is witnessing a shift in the weather pattern. On the morning of Saturday, October 26, a thick layer of fog covered many districts, with a mix of light sunshine and moving clouds throughout the day. According to the weather department’s forecast, from October 29 to October 31, many regions of Bihar may experience light to moderate rainfall. During this period, some areas of North and North-Eastern Bihar could witness heavy rain, along with strong winds reaching speeds of 30-40 km/h.

The change in weather conditions is primarily due to a new low-pressure system that has formed in the Bay of Bengal and the Andaman Sea. This weather system is expected to intensify into a deep depression by October 27, potentially turning into a cyclonic storm. The system is expected to hit the coast of Andhra Pradesh, particularly near Kakinada and Machilipatnam, on the evening or night of October 28.

Expected Weather Changes Due to Low-Pressure System

According to the Patna Meteorological Center, the low-pressure area in the Bay of Bengal and the Andaman Sea has now intensified into a deep depression. The system is likely to develop into a cyclonic storm by October 27, bringing along adverse weather conditions such as rain and gusty winds. The weather department predicts that by October 28, the storm could impact the coastlines of Andhra Pradesh, specifically Kakinada and Machilipatnam. The associated weather systems may influence Bihar’s weather by bringing rainfall and potential storms.

Chhath Festival Weather: Morning Fog and Cool Conditions

As the Chhath Puja (October 27-28) progresses, the weather will be marked by foggy mornings, mild cloud cover, and a crisp coolness in the air. While the temperatures during the day will remain fairly normal, a slight dip in the maximum temperature by 2 to 4 degrees Celsius is expected over the next four days. This decrease in temperature will add to the chill felt in the early hours, making the mornings feel cooler and more conducive to the festival’s rituals.

Temperature Trends in Bihar

On Saturday, October 25, the maximum temperature in Patna was recorded at 33.6°C, while Purnia saw the highest temperature at 34.2°C in the state. Fifteen districts experienced an increase in temperature, while other areas saw slight declines. In the coming days, there is no significant change expected in the minimum temperature. However, the maximum temperature may show a slight decrease, especially as the cold front moves in due to the evolving low-pressure system.

Impact of Weather Conditions on Chhath Rituals

Chhath Puja, which involves worshipping the Sun God, is often conducted outdoors at riverbanks, ponds, or other water bodies, making the weather conditions crucial to the safety and comfort of devotees. The cool mornings, coupled with foggy conditions, will make it necessary for participants to be well-prepared for the cold. The forecast suggests that morning fog will persist, making it necessary for devotees to take extra care while performing rituals early in the morning.

With the likely decrease in temperature over the next few days, especially from October 29 to October 31, there will be a slight chill in the air. This is expected to increase the overall discomfort, particularly for those performing the early morning rituals at the ghats and riverbanks.

Rainfall Likely to Affect Bihar During Chhath Puja

Weather experts are predicting light to moderate rainfall across Bihar between October 29 and October 31. This rain is expected to bring relief from the heat and humidity but may cause some inconvenience for the devotees who plan to perform their rituals outdoors. The rain will be most prominent in the northern and northeastern parts of Bihar, where heavy downpours and strong winds are also likely. Localized flooding in these regions may also be a concern during this period, as the rain could accumulate rapidly in low-lying areas.

Despite the chances of rain, the weather department advises residents and devotees to stay informed about changing weather conditions, especially in regions with a higher probability of rain. It is also advisable to check the weather updates regularly through reliable sources, including the meteorological department’s forecasts.

In conclusion, Bihar’s weather during the Chhath festival will be a mix of fog, cool temperatures, and intermittent rainfall. The forecast predicts light to moderate rain across many parts of the state, especially from October 29 to October 31, along with gusty winds in northern and northeastern districts. While the cool mornings will add to the festive atmosphere, the rain may cause some challenges for devotees, especially those gathering at outdoor locations for rituals.

Devotees participating in the Chhath festival should be prepared for fluctuating weather conditions and follow weather advisories to stay safe and comfortable. The changes in temperature and the likelihood of rain should not dampen the spirits of the festival, but it’s important to take necessary precautions.

Stay tuned for further updates and enjoy the Chhath celebrations with caution and care, keeping an eye on the latest weather reports as the festival progresses.