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Monthly climate in Biratnagar, Nepal

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Biratnagar features a humid subtropical climate (Cwa). Temperatures typically range between 16 °C (61 °F) and 30 °C (86 °F) through the year, but rarely can drop to 6 °C (44 °F) or can rise to as high as 41 °C (106 °F). The average annual precipitation amounts to about 1658 mm (65.3 inches) and receives 150 rainy days on the 1 mm (0.04 inches) threshold annually. Biratnagar enjoys an average of 3505 hours of sunshine throughout the year, and daylight varies from 10 hours 29 minutes to 13 hours 45 minutes per day.

Monthly average temperatures in Biratnagar, Nepal

The warmest months in Biratnagar are June, July and August, with daily mean temperatures ranging from 29 to 30 °C (85 - 86 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 16 to 19 °C (61 - 67 °F) throughout the day. On average each year, Biratnagar experiences 287 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 Biratnagar. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum29°C
(85°F)		31°C
(88°F)		37°C
(99°F)		41°C
(106°F)		40°C
(104°F)		38°C
(102°F)		38°C
(100°F)		38°C
(101°F)		37°C
(98°F)		36°C
(98°F)		36°C
(96°F)		30°C
(87°F)
Mean maximum27°C
(81°F)		30°C
(86°F)		36°C
(97°F)		38°C
(101°F)		38°C
(101°F)		37°C
(99°F)		36°C
(97°F)		36°C
(98°F)		36°C
(97°F)		35°C
(95°F)		33°C
(92°F)		29°C
(85°F)
Average high23°C
(74°F)		26°C
(79°F)		32°C
(89°F)		34°C
(94°F)		34°C
(93°F)		33°C
(93°F)		32°C
(90°F)		33°C
(91°F)		32°C
(90°F)		32°C
(89°F)		30°C
(86°F)		25°C
(78°F)
Daily mean16°C
(61°F)		19°C
(67°F)		25°C
(77°F)		28°C
(83°F)		29°C
(84°F)		30°C
(86°F)		29°C
(85°F)		30°C
(85°F)		29°C
(84°F)		27°C
(81°F)		22°C
(72°F)		18°C
(64°F)
Average low11°C
(52°F)		14°C
(57°F)		19°C
(66°F)		23°C
(74°F)		25°C
(77°F)		27°C
(80°F)		27°C
(81°F)		27°C
(81°F)		26°C
(80°F)		23°C
(74°F)		17°C
(62°F)		12°C
(54°F)
Mean minimum7°C
(45°F)		10°C
(50°F)		13°C
(56°F)		19°C
(67°F)		22°C
(72°F)		25°C
(77°F)		25°C
(77°F)		26°C
(78°F)		24°C
(76°F)		18°C
(65°F)		13°C
(56°F)		8°C
(47°F)
Minimum6°C
(44°F)		8°C
(46°F)		11°C
(51°F)		17°C
(62°F)		21°C
(70°F)		23°C
(74°F)		24°C
(75°F)		25°C
(77°F)		22°C
(73°F)		16°C
(61°F)		11°C
(53°F)		7°C
(44°F)

Compare climate in Biratnagar with other places

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

Monthly average precipitation in Biratnagar, Nepal

Biratnagar usually has the most precipitation in June, July and August, with an average of 28 rainy days and 372 mm (14.6 inches) of precipitation per month. The driest months in Biratnagar are January, November and December. On average, 3 mm (0.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Biratnagar. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)4 (0.2)19 (0.7)17 (0.7)48 (1.9)110 (4.3)308 (12.1)440 (17.3)367 (14.4)255 (10.1)83 (3.3)0 (0.0)5 (0.2)
Average precipitation days (≥ 1 mm)11381926292925900

Monthly sunshine hours in Biratnagar, Nepal

The sunniest months in Biratnagar are March, April and May, when the sun shines an average of 10 hours 55 minutes a day. Least sunny months in Biratnagar: January, July and September receive an average of 8 hours 13 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Biratnagar. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours237278332333339314246274272302289283
Mean daily daylight hours10h 40m11h 14m12h 0m12h 47m13h 26m13h 45m13h 35m13h 1m12h 16m11h 30m10h 50m10h 29m

Solar UV radiation in Biratnagar, Nepal

Biratnagar experiences the highest level of ultraviolet (UV) radiation in July, August and September, 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 Biratnagar UV Index data.

Average daily maximum UV levels by month for Biratnagar. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)56891011131212975