The weather in Bihar has taken a sudden turn, leaving the residents feeling the early chill of the upcoming winter season. As of October 30, 2025, the sky has been overcast, and the cool winds have significantly increased the feeling of cold. Throughout the day, the contrast between sunshine and clouds has made the drop in temperature more noticeable. In response, the Meteorological Department has issued a warning for thunderstorms, heavy rainfall, and lightning for the next three days.
Change in Weather Pattern: From Mild Chill to Cold Winds
For the past few days, the residents of Bihar had only been experiencing mild coolness during the early mornings and evenings. However, in the last 24 hours, a rapid change in the weather has been observed. Dense clouds have covered the sky, accompanied by cold winds, making the temperatures dip further. In many districts, the chilly winds and overcast conditions have resulted in a sudden drop in temperature, making the people feel the bite of early winter.
Cyclone Montha’s Impact on Bihar Weather
Meteorological experts have attributed this weather shift to the influence of a western disturbance and a system emerging from the Bay of Bengal. The latter, in particular, has led to the formation of Cyclone Montha, which has now started affecting Bihar as well. The cyclone, which originated in the Bay of Bengal, is expected to bring heavy to very heavy rainfall in several districts of South Bihar, North Bihar, and Seemanchal.
As per the latest advisory, this weather system will continue to bring significant rainfall in the state from October 29 to November 1. The Meteorological Department has alerted the residents of Bihar to be cautious and prepared for the inclement weather.
Orange Alert Issued for Several Districts on October 30
On October 30, 2025, the Meteorological Department issued an orange alert for multiple districts in Bihar. The regions that have been put on high alert include West Champaran, East Champaran, Gopalganj, Siwan, Sitamarhi, Madhubani, Darbhanga, and Supaul. These areas are expected to witness heavy rainfall, which could cause disruptions in daily life. Additionally, the rest of the state has been placed under a yellow alert, indicating the possibility of moderate to heavy rainfall and thunderstorms.
In districts like Muzaffarpur, Saran, Vaishali, Buxar, Kaimur, Rohtas, Aurangabad, Arwal, Madhepura, and Saharsa, there is also an increased likelihood of thunderstorms and lightning strikes. As such, the authorities have advised residents to stay cautious during the adverse weather conditions.
Continuous Rainfall Forecast for October 31
The weather forecast for October 31, 2025, indicates that Bihar will continue to experience heavy rainfall in several parts of the state. Orange alerts have been issued for Sitamarhi, Madhubani, Supaul, Araria, and Kishanganj districts, which will be the most affected by the heavy rains and possible thunderstorms. Meanwhile, the rest of the districts will remain under yellow alert, suggesting lighter rainfall with some chance of thunderstorms.
Other districts, including West Champaran, Muzaffarpur, Darbhanga, Samastipur, Madhepura, Saharsa, Purnia, and Katihar, are also expected to experience rain and strong winds, which may lead to temporary disruptions.
Safety Measures and Precautions to Take
Given the forecasted adverse weather conditions, the Meteorological Department has advised residents of Bihar to exercise caution over the next three days. People are encouraged to monitor the weather closely before stepping outside, especially when thunderstorms and lightning are expected. It is recommended to avoid open areas during storms and heavy rainfall.
Farmers, in particular, have been advised to postpone activities such as harvesting and storing crops, as the heavy rainfall could affect both the crop yield and storage conditions. The authorities have also suggested securing homes and property against potential damage caused by strong winds and heavy rains.
The Role of Cyclone Montha in Bihar’s Weather
The ongoing cyclone in the Bay of Bengal, named Montha, is responsible for the turbulent weather currently being experienced in Bihar. The cyclone’s influence has been gradually extending its reach, bringing rain and strong winds to several states in the region. While the cyclone is expected to move further inland, its impact on Bihar’s weather is expected to persist for several more days. Meteorologists have predicted that the cyclonic system will weaken as it moves further into the mainland, but it is still likely to cause considerable rainfall and storms in the affected areas.
The Bay of Bengal continues to be an important weather factor, with systems emerging from this region often bringing significant changes to the Indian subcontinent’s climate. In the case of Cyclone Montha, the storm’s effect on Bihar has been more pronounced, leading to widespread rain and cooler temperatures.
What to Expect in the Coming Days
Residents should brace themselves for a continued spell of bad weather, with rainfall and thunderstorm activity continuing through the first days of November. While the intensity of the rains may reduce in some regions, the danger of lightning strikes and strong winds will remain a concern. With heavy rains expected to continue, authorities are urging the public to stay indoors when conditions worsen, and to be aware of their surroundings when going out.
The next few days will be crucial for local communities, especially in terms of preparing for and dealing with the fallout of adverse weather conditions. Those living in flood-prone areas must take extra precautions to safeguard their homes and livelihoods.
Bihar’s weather has taken a significant turn with the onset of Cyclone Montha, leading to an abrupt drop in temperatures and the onset of thunderstorms. The next three days promise to be challenging, with heavy rainfall, thunderstorms, and lightning expected to affect a wide region of the state. Residents should follow weather updates closely, avoid open areas during storms, and take necessary precautions to protect themselves, their families, and their property. By staying informed and prepared, Bihar’s residents can minimize the impact of this sudden change in weather.
