Weather in Biratnagar

Stay informed about the weather conditions in Biratnagar before heading out. Below, you will find current data, charts, and a detailed forecast to help you plan your day.

The climate in Biratnagar can be described as humid subtropical, which is typical for the plains regions of Nepal (Terai). It is significantly warmer here than in the country's high-altitude areas, and the weather remains hot for most of the year. Tourists should expect a clear distinction between the dry and wet seasons, which determine the nature of the trip.

The summer period, beginning in May, brings not only high temperatures reaching 33–34°C but also the monsoon season. From June to September, rains occur very frequently, sometimes daily, accompanied by high humidity. Although downpours bring temporary coolness, the air remains warm and saturated with moisture.

The most comfortable time to visit is considered the period from late autumn to early spring. From November to February, dry and clear weather sets in with minimal rainfall. Days during this time are pleasant and sunny, with an average temperature of about 19–25°C, although nights can be quite cool, so a light jacket in your luggage will not go amiss.

The climatic year in Biratnagar is distinguished by a clear division into seasons with a noticeable difference in temperatures. The coldest month is traditionally January, when the average temperature is around 16.6°C, and night-time readings drop to a minimum of 10.6°C. In contrast to winter, the period from April to September is characterized by high temperatures: June and August become the hottest by average indicators (29.0°C), although peak daytime values are recorded as early as April.

The summer season arrives rapidly here and is accompanied by intense heat. Already in April, the daytime maximum reaches 34.0°C, creating a sensation of strong heat. In the following months (from May to September), the heat becomes more humid and stable: daytime temperatures hold in the range of 31-33°C, and nights remain very warm, not cooling down below 25-26°C. During this period, the difference between daytime and night-time temperatures is minimal, creating a feeling of constant warmth.

Winter in Biratnagar, on the contrary, is mild and pleasant for travel, but with perceptible daily fluctuations. In December and January, the air warms up to a comfortable 22-24°C during the day, which is ideal for sightseeing, however, nights can be cool (10-12°C). Travellers should take this contrast into account: while you can walk in light clothing during the day, after sunset you will definitely need a warm cardigan or jacket.

The precipitation pattern in Biratnagar has a clearly defined seasonality, which is typical for the climate of this region of Nepal. The year can be clearly divided into a dry period and a rainy season. Winter months, especially November, December, and January, are the driest: the probability of precipitation at this time is reduced to a minimum, and statistics often show 0 mm of rainfall and an absence of rainy days. This makes winter the most predictable time for planning open-air excursions.

With the arrival of warmth, the situation begins to change. Already in May, the number of days with precipitation rises sharply to 19, heralding the start of the wet season. The peak of the rains falls on the summer months: in June, July, and August, the sky is often overcast with clouds. July and August are considered the wettest months of the year, when rains can occur almost daily (up to 29 days per month), so travellers should be prepared for high humidity and frequent downpours.

By September, the rainy season begins to gradually recede, although the number of rainy days still remains high (about 25). The final transition to the dry season occurs in October, when the frequency of precipitation decreases noticeably. Given the warm temperature regime of Biratnagar, precipitation here falls exclusively in the form of rain, and snow does not occur in this lowland city.

When packing for Biratnagar, it is important to consider that the city is located on the plains, and the climate here differs significantly from the high-altitude regions of Nepal. In the summer months and early autumn (from May to September), hot and humid weather prevails with temperatures around +29...+33°C. This period marks the monsoon season, when rains can occur almost daily (up to 29 rainy days per month). Therefore, be sure to take light, breathable clothing made from natural fabrics, a high-quality raincoat, and a reliable umbrella.

In winter (from November to February), the weather becomes drier and more comfortable, but nights can be cool. The average daytime temperature stays around +18...+22°C, however, at night it can drop to +10...+12°C. For a trip at this time of year, we recommend adhering to the principle of layering: you will be more comfortable in light clothing during the day, but strictly grab a warm cardigan, sweater, or light jacket for evening and morning walks.

Regardless of the season, do not forget comfortable walking shoes: closed trainers are suitable for the dry season, and quick-drying sandals for the wet season. Since the sun in these latitudes can be active even on cloudy days, be sure to pack sunscreen, sunglasses, and a hat in your suitcase. It will also be useful to take insect repellent with you, as insects can be active in the humid climate.