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Monthly climate in Fasa, Iran

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Fasa features a hot semi-arid climate (BSh). Temperatures typically range between 7 °C (46 °F) and 31 °C (87 °F) through the year, but rarely can drop to -6 °C (22 °F) or can rise to as high as 40 °C (105 °F). The average annual precipitation amounts to about 249 mm (9.8 inches) and receives 27 rainy days on the 1 mm (0.04 inches) threshold annually. Fasa enjoys an average of 4041 hours of sunshine throughout the year, and daylight varies from 10 hours 19 minutes to 13 hours 56 minutes per day.

Monthly average temperatures in Fasa, Iran

The warmest months in Fasa are June, July and August, with daily mean temperatures ranging from 30 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 7 to 9 °C (46 - 49 °F) throughout the day. On average each year, Fasa experiences 167 days above 25 °C (77.0 °F) and 15 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Fasa. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum22°C
(72°F)		23°C
(73°F)		29°C
(85°F)		30°C
(86°F)		37°C
(100°F)		40°C
(104°F)		40°C
(105°F)		40°C
(104°F)		37°C
(98°F)		33°C
(91°F)		26°C
(79°F)		22°C
(72°F)
Mean maximum18°C
(65°F)		20°C
(69°F)		24°C
(76°F)		28°C
(82°F)		35°C
(95°F)		38°C
(100°F)		39°C
(103°F)		38°C
(101°F)		35°C
(96°F)		31°C
(88°F)		24°C
(76°F)		19°C
(67°F)
Average high13°C
(56°F)		15°C
(59°F)		19°C
(67°F)		24°C
(75°F)		29°C
(85°F)		36°C
(97°F)		36°C
(98°F)		35°C
(96°F)		33°C
(91°F)		27°C
(81°F)		19°C
(66°F)		15°C
(59°F)
Daily mean7°C
(46°F)		9°C
(49°F)		14°C
(57°F)		18°C
(65°F)		24°C
(75°F)		30°C
(86°F)		31°C
(87°F)		30°C
(85°F)		26°C
(80°F)		20°C
(69°F)		13°C
(56°F)		9°C
(48°F)
Average low2°C
(36°F)		4°C
(39°F)		7°C
(46°F)		12°C
(54°F)		17°C
(62°F)		22°C
(72°F)		24°C
(75°F)		22°C
(73°F)		18°C
(65°F)		13°C
(55°F)		7°C
(45°F)		3°C
(38°F)
Mean minimum-4°C
(25°F)		-2°C
(28°F)		2°C
(35°F)		7°C
(45°F)		12°C
(54°F)		18°C
(64°F)		20°C
(69°F)		18°C
(65°F)		15°C
(60°F)		9°C
(48°F)		2°C
(36°F)		-1°C
(30°F)
Minimum-6°C
(22°F)		-4°C
(24°F)		-2°C
(30°F)		5°C
(42°F)		12°C
(53°F)		16°C
(61°F)		19°C
(66°F)		16°C
(61°F)		13°C
(55°F)		4°C
(40°F)		-1°C
(30°F)		-3°C
(27°F)

Compare climate in Fasa with other places

Compare temperature, precipitation, sunshine, UV index in Fasa, Iran with other places around the world.

Monthly average precipitation in Fasa, Iran

Fasa usually has the most precipitation in February, March and December, with an average of 4 rainy days and 56 mm (2.2 inches) of precipitation per month. The driest months in Fasa are June, August and September. On average, 0 mm (0.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Fasa. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)24 (0.9)71 (2.8)70 (2.7)23 (0.9)7 (0.3)0 (0.0)4 (0.2)1 (0.0)0 (0.0)2 (0.1)19 (0.7)27 (1.1)
Average precipitation days (≥ 1 mm)356520000123

Monthly sunshine hours in Fasa, Iran

The sunniest months in Fasa are May, June and July, when the sun shines an average of 12 hours 35 minutes a day. Least sunny months in Fasa: January, February and November receive an average of 9 hours 15 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Fasa. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours245288340351382387388376346334299300
Mean daily daylight hours10h 30m11h 9m11h 59m12h 51m13h 35m13h 56m13h 45m13h 7m12h 18m11h 26m10h 41m10h 19m

Solar UV radiation in Fasa, Iran

Fasa experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 13 - 14, which corresponds to the Extreme category of sun exposure. January, November 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 Fasa UV Index data.

Average daily maximum UV levels by month for Fasa. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)68121214131312121075