nomadseason

Monthly climate in Birganj, Nepal

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Birganj features a humid subtropical climate (Cwa). Temperatures typically range between 15 °C (60 °F) and 31 °C (87 °F) through the year, but rarely can drop to 5 °C (40 °F) or can rise to as high as 43 °C (110 °F). The average annual precipitation amounts to about 1639 mm (64.5 inches) and receives 135 rainy days on the 1 mm (0.04 inches) threshold annually. Birganj enjoys an average of 3539 hours of sunshine throughout the year, and daylight varies from 10 hours 27 minutes to 13 hours 48 minutes per day.

Monthly average temperatures in Birganj, Nepal

The warmest months in Birganj are May, June and August, with daily mean temperatures ranging from 29 to 31 °C (85 - 87 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 15 to 19 °C (60 - 66 °F) throughout the day. On average each year, Birganj experiences 275 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Birganj. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum29°C
(85°F)		32°C
(90°F)		38°C
(101°F)		42°C
(107°F)		41°C
(107°F)		43°C
(110°F)		40°C
(103°F)		38°C
(101°F)		37°C
(99°F)		37°C
(98°F)		35°C
(95°F)		30°C
(85°F)
Mean maximum27°C
(80°F)		30°C
(87°F)		36°C
(98°F)		40°C
(104°F)		40°C
(104°F)		38°C
(101°F)		37°C
(99°F)		37°C
(98°F)		36°C
(98°F)		35°C
(96°F)		33°C
(91°F)		28°C
(83°F)
Average high22°C
(72°F)		26°C
(79°F)		32°C
(90°F)		36°C
(97°F)		36°C
(96°F)		35°C
(95°F)		33°C
(91°F)		33°C
(91°F)		33°C
(91°F)		32°C
(90°F)		29°C
(85°F)		24°C
(76°F)
Daily mean15°C
(60°F)		19°C
(66°F)		24°C
(76°F)		29°C
(85°F)		30°C
(86°F)		31°C
(87°F)		29°C
(85°F)		29°C
(85°F)		29°C
(84°F)		27°C
(80°F)		21°C
(71°F)		17°C
(62°F)
Average low10°C
(51°F)		13°C
(56°F)		18°C
(64°F)		23°C
(74°F)		25°C
(78°F)		27°C
(81°F)		27°C
(81°F)		27°C
(81°F)		26°C
(79°F)		23°C
(73°F)		16°C
(61°F)		11°C
(53°F)
Mean minimum7°C
(44°F)		9°C
(49°F)		12°C
(55°F)		19°C
(67°F)		21°C
(71°F)		25°C
(77°F)		25°C
(77°F)		26°C
(78°F)		24°C
(76°F)		17°C
(64°F)		12°C
(55°F)		7°C
(45°F)
Minimum5°C
(40°F)		7°C
(45°F)		9°C
(48°F)		17°C
(62°F)		20°C
(69°F)		23°C
(74°F)		24°C
(76°F)		25°C
(77°F)		22°C
(73°F)		16°C
(60°F)		11°C
(52°F)		6°C
(42°F)

Compare climate in Birganj with other places

Compare temperature, precipitation, sunshine, UV index in Birganj, Nepal with other places around the world.

Monthly average precipitation in Birganj, Nepal

Birganj usually has the most precipitation in July, August and September, with an average of 27 rainy days and 375 mm (14.8 inches) of precipitation per month. The driest months in Birganj are January, November and December. On average, 8 mm (0.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Birganj. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)12 (0.5)20 (0.8)13 (0.5)36 (1.4)152 (6.0)213 (8.4)513 (20.2)351 (13.8)262 (10.3)55 (2.2)1 (0.0)11 (0.4)
Average precipitation days (≥ 1 mm)12261421292924700

Monthly sunshine hours in Birganj, Nepal

The sunniest months in Birganj are March, April and May, when the sun shines an average of 11 hours 7 minutes a day. Least sunny months in Birganj: January, July and August receive an average of 8 hours 7 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Birganj. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours236274334338349329250269276313284280
Mean daily daylight hours10h 38m11h 13m12h 0m12h 48m13h 28m13h 48m13h 37m13h 2m12h 17m11h 29m10h 48m10h 27m

Solar UV radiation in Birganj, Nepal

Birganj experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 12 - 13, which corresponds to the Extreme category of sun exposure. January, February and December are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 6. For more detailed information, check out our hourly Birganj UV Index data.

Average daily maximum UV levels by month for Birganj. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)568101012131211975