Koshi weather
Today's sky, the hour-by-hour rain chance and the 16-day forecast for Koshi, Nepal. Like most weather services, we show Koshi at one spot: Biratnagar, its largest city. At 4:15 AM local time it was clear and 22°C (72°F). Little to no rain in the next 24 hours. Best months for weather: Oct–Mar.
Current conditions
- Clouds
- 0%
- Chance of rain
- 0%
- Rain
- 0.0 mm/h
Hourly Forecast
Little to no rain in the next 24 hours
Daily Forecast
Best Time to Visit
Peak season Oct–MarOff season May–Sep
About Biratnagar weather
Is it raining in Biratnagar right now?
No. It’s clear and 22° right now. Little to no rain in the next 24 hours.
What’s the weather like in Biratnagar this week?
Over the next 7 days, expect highs of 28–29° and lows of 18–22°. Little rain is expected. The driest day looks like Friday.
Has it been raining in Biratnagar lately?
In the past 7 days, Biratnagar had 3 rainy days and 29.2 mm of rain in total.
What should I pack for Biratnagar?
For the coming week, bring light, breathable clothes and sunscreen.
Koshi weather by month
When is the best time to visit Koshi?
Based on weather alone, the best time to visit Koshi is Oct–Mar, according to NASA's 2001–2025 climate averages. May–Sep tends to be the least pleasant. Average highs run from 22°C (72°F) in January to 36°C (96°F) in May.
What is the rainiest month in Koshi?
July is the wettest month, with about 379 mm (14.9 in) of rain on average. December is the driest, with about 2 mm (0.1 in).
What is the hottest month in Koshi?
May is the warmest, with average highs of 36°C (96°F) and lows of 24°C (75°F). January is the coolest, with highs of 22°C (72°F) and lows of 10°C (49°F).
Does Koshi have a rainy season?
Yes. Jun–Sep is the rainy season (150 mm or more a month), while Nov–Apr is usually dry (under 60 mm).
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis for Biratnagar), forecast and current conditions from Open-Meteo. Page updated . How we rate months
Compare places in Koshi
Weather can differ a lot within Koshi: coasts, hills and mountains each have their own climate.
| Place | Best months | Rainy months | Highs | Rain a year |
|---|---|---|---|---|
| Biratnagar | Oct–Mar | Jun–Sep | 22–36°C | 1,393 mm |
| Dharān | Oct–Apr | Jun–Sep | 18–30°C | 1,231 mm |
| Triyuga | Oct–Apr | Jun–Sep | 19–32°C | 1,041 mm |
| Inaruwa | Oct–Mar | Jun–Sep | 22–37°C | 1,152 mm |
| Īṭahari̇̄ | Oct–Mar | Jun–Sep | 22–36°C | 1,393 mm |
| Khā̃dbāri̇̄ | Mar–May, Oct–Nov | Jul–Aug | 9–21°C | 904 mm |
| Dhankutā | Oct–Apr | Jun–Sep | 18–30°C | 1,231 mm |
| Bhadrapur | Oct–Mar | May–Sep | 22–35°C | 1,775 mm |
| Ilām | Oct–Apr | Jun–Sep | 16–27°C | 1,546 mm |