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Monthly climate in Siddharthanagar, Nepal

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Siddharthanagar features a humid subtropical climate (Cwa). Temperatures typically range between 14 °C (58 °F) and 30 °C (86 °F) through the year, but rarely can drop to 4 °C (40 °F) or can rise to as high as 42 °C (107 °F). The average annual precipitation amounts to about 1721 mm (67.8 inches) and receives 132 rainy days on the 1 mm (0.04 inches) threshold annually. Siddharthanagar enjoys an average of 3630 hours of sunshine throughout the year, and daylight varies from 10 hours 25 minutes to 13 hours 50 minutes per day.

Monthly average temperatures in Siddharthanagar, Nepal

The warmest months in Siddharthanagar are May, June and July, with daily mean temperatures ranging from 29 to 30 °C (84 - 86 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 14 to 18 °C (58 - 64 °F) throughout the day. On average each year, Siddharthanagar experiences 260 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 Siddharthanagar. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum28°C
(82°F)		31°C
(89°F)		36°C
(97°F)		40°C
(104°F)		41°C
(106°F)		42°C
(107°F)		37°C
(99°F)		37°C
(98°F)		35°C
(96°F)		35°C
(96°F)		33°C
(92°F)		28°C
(83°F)
Mean maximum25°C
(78°F)		29°C
(84°F)		35°C
(95°F)		39°C
(102°F)		39°C
(102°F)		38°C
(100°F)		36°C
(97°F)		35°C
(95°F)		35°C
(95°F)		34°C
(93°F)		31°C
(88°F)		27°C
(81°F)
Average high20°C
(69°F)		24°C
(76°F)		31°C
(88°F)		35°C
(95°F)		35°C
(95°F)		34°C
(93°F)		32°C
(90°F)		32°C
(90°F)		32°C
(89°F)		31°C
(88°F)		28°C
(82°F)		23°C
(74°F)
Daily mean14°C
(58°F)		18°C
(64°F)		23°C
(74°F)		28°C
(83°F)		29°C
(85°F)		30°C
(86°F)		29°C
(84°F)		29°C
(84°F)		28°C
(83°F)		26°C
(79°F)		21°C
(69°F)		16°C
(61°F)
Average low10°C
(50°F)		12°C
(54°F)		17°C
(62°F)		22°C
(71°F)		24°C
(76°F)		26°C
(80°F)		26°C
(80°F)		27°C
(80°F)		26°C
(79°F)		22°C
(71°F)		15°C
(60°F)		11°C
(52°F)
Mean minimum6°C
(43°F)		8°C
(48°F)		12°C
(55°F)		18°C
(64°F)		20°C
(68°F)		24°C
(75°F)		25°C
(77°F)		25°C
(77°F)		24°C
(75°F)		17°C
(62°F)		12°C
(55°F)		7°C
(44°F)
Minimum4°C
(40°F)		7°C
(45°F)		9°C
(48°F)		16°C
(60°F)		18°C
(65°F)		23°C
(73°F)		24°C
(76°F)		24°C
(76°F)		23°C
(73°F)		15°C
(59°F)		11°C
(52°F)		5°C
(42°F)

Compare climate in Siddharthanagar with other places

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

Monthly average precipitation in Siddharthanagar, Nepal

Siddharthanagar usually has the most precipitation in July, August and September, with an average of 26 rainy days and 409 mm (16.1 inches) of precipitation per month. The driest months in Siddharthanagar are March, November and December. On average, 8 mm (0.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Siddharthanagar. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)20 (0.8)17 (0.7)13 (0.5)25 (1.0)113 (4.4)256 (10.1)514 (20.2)409 (16.1)304 (12.0)39 (1.5)2 (0.1)10 (0.4)
Average precipitation days (≥ 1 mm)22361120282923701

Monthly sunshine hours in Siddharthanagar, Nepal

The sunniest months in Siddharthanagar are March, April and May, when the sun shines an average of 11 hours 20 minutes a day. Least sunny months in Siddharthanagar: January, February and July receive an average of 8 hours 36 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Siddharthanagar. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours237279339346356333267282292319288287
Mean daily daylight hours10h 36m11h 12m12h 0m12h 49m13h 29m13h 50m13h 39m13h 4m12h 17m11h 28m10h 46m10h 25m

Solar UV radiation in Siddharthanagar, Nepal

Siddharthanagar 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 Siddharthanagar UV Index data.

Average daily maximum UV levels by month for Siddharthanagar. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)468101012131211975