Weather in Biratnagar - 14-day forecast

Detailed weather forecast for Biratnagar, Nepal: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.

Forecast for the next days in Biratnagar

today🌧️ 29°💧 6.7 mm

Sun🌧️ 29°💧 14 mm

Mon🌧️ 27°💧 12 mm

Tue🌧️ 29°💧 12.8 mm

Wed🌧️ 28°💧 18.6 mm

Thu🌧️ 26°💧 5.7 mm

Fri☁️ 33°💧 31.6 mm

Sat🌧️ 32°💧 39.4 mm

Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Thursday 10 Sept in Biratnagar, the forecast high is 26°C. Typical daytime temperatures at this time of year range from 29°C to 32°C, so it will be exceptionally cool. It is cooler than 99% of similar days.

Saturday 5 Sept

29°Ccooler than usual

usually 29°C–31°C

cooler than 80% of similar days

night: exceptionally warm rain: typical rainfall wind: exceptionally strong

Sunday 6 Sept

29°Ccooler than usual

usually 29°C–31°C

cooler than 74% of similar days

night: exceptionally warm rain: more rain than usual wind: typical

Monday 7 Sept

27°Cexceptionally cool

usually 29°C–31°C

cooler than 96% of similar days

night: exceptionally warm rain: more rain than usual wind: stronger than usual

Tuesday 8 Sept

29°Ccooler than usual

usually 29°C–31°C

cooler than 82% of similar days

night: exceptionally warm rain: more rain than usual wind: typical

Wednesday 9 Sept

28°Cexceptionally cool

usually 29°C–32°C

cooler than 91% of similar days

night: exceptionally warm rain: exceptionally wet wind: stronger than usual

Thursday 10 Sept

26°Cexceptionally cool

usually 29°C–32°C

cooler than 99% of similar days

night: exceptionally warm rain: typical rainfall wind: stronger than usual

Friday 11 Sept

33°Cexceptionally warm

usually 29°C–32°C

warmer than 93% of similar days

night: exceptionally warm rain: exceptionally wet wind: typical

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →

cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 30°C by day. The coolest year was 1991 (28°C) and the warmest was 1994 (33°C). The current forecast averages 29°C - lower than in 87% of historical years.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

14-day forecast - Biratnagar

Biratnagar - 14-day weather forecast infographic

Biratnagar 30 & 45-day weather - long-range outlook

Next 16 days · forecast

29°

around 26° at night · days with rain: 12

Weeks 3-4 · avg for September

33°

around 26° at night · rain chance 20%

Weeks 5-7 · avg for October

31°

around 22° at night · rain chance 8%

The 30 & 45-day outlook for Biratnagar: the next 16 days are a numerical forecast updated daily - on average 29° by day and 26° at night. Further out we rely on multi-year climate averages: around 33° in September, and about 31° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Biratnagar

Saturday5 September 2026

🌧️29°moderate rain

sunrise 05:37 · sunset 18:12 · night 26° · evening 30° · rain 6.7 mm · humidity 76% · wind 7 m/s · clouds 100%

Sunday6 September 2026

🌧️29°moderate rain

sunrise 05:37 · sunset 18:11 · night 27° · evening 30° · rain 13.98 mm · humidity 77% · wind 5 m/s · clouds 86%

Monday7 September 2026

🌧️27°moderate rain

sunrise 05:38 · sunset 18:10 · night 25° · evening 28° · rain 11.95 mm · humidity 87% · wind 6 m/s · clouds 100%

Tuesday8 September 2026

🌧️29°moderate rain

sunrise 05:38 · sunset 18:09 · night 26° · evening 29° · rain 12.79 mm · humidity 78% · wind 4 m/s · clouds 96%

Wednesday9 September 2026

🌧️28°moderate rain

sunrise 05:39 · sunset 18:08 · night 26° · evening 28° · rain 18.6 mm · humidity 83% · wind 6 m/s · clouds 99%

Thursday10 September 2026

🌧️26°light rain

sunrise 05:39 · sunset 18:07 · night 25° · evening 26° · rain 5.73 mm · humidity 93% · wind 6 m/s · clouds 100%

Friday11 September 2026

☁️33°broken clouds

sunrise 05:39 · sunset 18:05 · night 28° · evening 30° · rain 31.56 mm · humidity 60% · wind 4 m/s · clouds 67%

Saturday12 September 2026

🌧️32°moderate rain

sunrise 05:40 · sunset 18:04 · night 25° · evening 28° · rain 39.36 mm · humidity 65% · wind 5 m/s · clouds 100%

Sunday13 September 2026

🌧️24°heavy rain

sunrise 05:40 · sunset 18:03 · night 24° · evening 25° · rain 59.22 mm · humidity 96% · wind 6 m/s · clouds 100%

Monday14 September 2026

🌧️23°moderate rain

sunrise 05:41 · sunset 18:02 · night 24° · evening 24° · rain 10.77 mm · humidity 97% · wind 3 m/s · clouds 100%

Tuesday15 September 2026

🌧️24°light rain

sunrise 05:41 · sunset 18:01 · night 24° · evening 24° · rain 0.57 mm · humidity 88% · wind 3 m/s · clouds 100%

Wednesday16 September 2026

🌧️27°light rain

sunrise 05:42 · sunset 18:00 · night 25° · evening 26° · rain 0.54 mm · humidity 73% · wind 3 m/s · clouds 96%

Thursday17 September 2026

☁️31°broken clouds

sunrise 05:42 · sunset 17:59 · night 26° · evening 29° · rain 0.27 mm · humidity 58% · wind 3 m/s · clouds 75%

Friday18 September 2026

🌤️32°a few clouds

sunrise 05:42 · sunset 17:58 · night 27° · evening 30° · rain 4.44 mm · humidity 61% · wind 3 m/s · clouds 19%

Saturday19 September 2026

🌤️34°a few clouds

sunrise 05:43 · sunset 17:56 · night 29° · evening 30° · rain 8.79 mm · humidity 56% · wind 3 m/s · clouds 19%

Sunday20 September 2026

🌤️34°scattered clouds

sunrise 05:43 · sunset 17:55 · night 29° · evening 31° · humidity 54% · wind 2 m/s · clouds 35%

UV index in Biratnagar - is it safe to sunbathe?

Today the UV index in Biratnagar is 8 (high) - unprotected fair skin can burn in about 25 minutes. SPF 30-50, a hat and sunglasses are a must. Better stay in shade between 11:00 and 15:00.

Air quality and smog in Biratnagar

Air quality in Biratnagar is currently good. Fine particulate PM2.5: 16.9 µg/m³, PM10: 17.8 µg/m³.

City	PM2.5 (µg/m³)	PM10 (µg/m³)	Air quality
Biratnagar	16.9	17.8	good

Based on PM2.5 thresholds. Station readings, updated daily (last reading: 2026-09-05, 06:45).

Biratnagar weather through the year

Warmest, driest months on average: January, February, March, April.

Nearby and related places

DharanRajbirajJanakpurPhuntsholingPatanKathmanduBharatpurHituraPokhara

FAQ - Biratnagar weather

What is the weather like in Biratnagar today?

Today it is about 29° during the day and 26° at night, moderate rain.

How far ahead can I check the forecast for Biratnagar?

This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.