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Monthly climate in Achham, Nepal

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Achham features a subtropical climate (Cwb). Temperatures typically range between 10 °C (51 °F) and 25 °C (77 °F) through the year, but rarely can drop to -1 °C (31 °F) or can rise to as high as 36 °C (97 °F). The average annual precipitation amounts to about 1754 mm (69.0 inches) and receives 166 rainy days on the 1 mm (0.04 inches) threshold annually. Achham enjoys an average of 3687 hours of sunshine throughout the year, and daylight varies from 10 hours 18 minutes to 13 hours 57 minutes per day.

Monthly average temperatures in Achham, Nepal

The warmest months in Achham are June, July and August, with daily mean temperatures ranging from 25 to 25 °C (77 - 77 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 10 to 13 °C (51 - 56 °F) throughout the day. On average each year, Achham experiences 181 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 Achham. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum23°C
(74°F)		26°C
(79°F)		31°C
(88°F)		33°C
(92°F)		34°C
(94°F)		36°C
(97°F)		32°C
(90°F)		32°C
(89°F)		31°C
(88°F)		31°C
(88°F)		28°C
(82°F)		23°C
(74°F)
Mean maximum21°C
(70°F)		24°C
(75°F)		29°C
(85°F)		32°C
(90°F)		33°C
(92°F)		32°C
(91°F)		31°C
(88°F)		31°C
(87°F)		30°C
(87°F)		29°C
(84°F)		26°C
(79°F)		22°C
(72°F)
Average high17°C
(62°F)		20°C
(68°F)		24°C
(76°F)		28°C
(84°F)		29°C
(84°F)		29°C
(84°F)		28°C
(82°F)		28°C
(82°F)		28°C
(82°F)		26°C
(79°F)		22°C
(73°F)		18°C
(65°F)
Daily mean10°C
(51°F)		13°C
(56°F)		18°C
(64°F)		22°C
(72°F)		24°C
(75°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		24°C
(75°F)		21°C
(70°F)		16°C
(61°F)		12°C
(53°F)
Average low4°C
(40°F)		7°C
(45°F)		10°C
(51°F)		15°C
(59°F)		18°C
(64°F)		21°C
(69°F)		22°C
(72°F)		22°C
(72°F)		20°C
(69°F)		15°C
(60°F)		10°C
(50°F)		5°C
(42°F)
Mean minimum1°C
(34°F)		3°C
(37°F)		5°C
(41°F)		11°C
(53°F)		14°C
(58°F)		18°C
(65°F)		20°C
(68°F)		20°C
(69°F)		18°C
(64°F)		11°C
(52°F)		7°C
(45°F)		1°C
(34°F)
Minimum-0°C
(32°F)		0°C
(33°F)		1°C
(34°F)		10°C
(50°F)		12°C
(54°F)		17°C
(63°F)		18°C
(66°F)		20°C
(68°F)		16°C
(62°F)		10°C
(50°F)		5°C
(42°F)		-1°C
(31°F)

Compare climate in Achham with other places

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

Monthly average precipitation in Achham, Nepal

Achham usually has the most precipitation in June, July and August, with an average of 27 rainy days and 412 mm (16.2 inches) of precipitation per month. The driest months in Achham are March, November and December. On average, 23 mm (0.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Achham. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)48 (1.9)40 (1.6)38 (1.5)41 (1.6)80 (3.2)263 (10.3)520 (20.5)455 (17.9)166 (6.5)73 (2.9)8 (0.3)23 (0.9)
Average precipitation days (≥ 1 mm)769111521303025714

Monthly sunshine hours in Achham, Nepal

The sunniest months in Achham are April, May and June, when the sun shines an average of 11 hours 41 minutes a day. Least sunny months in Achham: January, July and August receive an average of 8 hours 10 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Achham. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours240285340348365349266253315329298294
Mean daily daylight hours10h 30m11h 9m11h 59m12h 52m13h 35m13h 57m13h 46m13h 8m12h 18m11h 26m10h 41m10h 18m

Solar UV radiation in Achham, Nepal

Achham experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 12 - 14, 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 7. For more detailed information, check out our hourly Achham UV Index data.

Average daily maximum UV levels by month for Achham. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)6710111212141311975