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Monthly climate in Siahkal, Iran

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Siahkal features a humid subtropical climate (Cfa). Temperatures typically range between 8 °C (47 °F) and 27 °C (81 °F) through the year, but rarely can drop to -9 °C (17 °F) or can rise to as high as 38 °C (100 °F). The average annual precipitation amounts to about 1371 mm (54.0 inches) and receives 135 rainy days on the 1 mm (0.04 inches) threshold annually. Siahkal enjoys an average of 3663 hours of sunshine throughout the year, and daylight varies from 9 hours 38 minutes to 14 hours 39 minutes per day.

Monthly average temperatures in Siahkal, Iran

The warmest months in Siahkal are June, July and August, with daily mean temperatures ranging from 25 to 27 °C (77 - 81 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 8 to 10 °C (47 - 51 °F) throughout the day. On average each year, Siahkal experiences 116 days above 25 °C (77.0 °F) and 9 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Siahkal. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum23°C
(73°F)		26°C
(79°F)		30°C
(87°F)		31°C
(89°F)		37°C
(99°F)		36°C
(97°F)		38°C
(100°F)		37°C
(100°F)		37°C
(99°F)		32°C
(91°F)		28°C
(83°F)		27°C
(81°F)
Mean maximum20°C
(68°F)		21°C
(70°F)		26°C
(79°F)		28°C
(82°F)		33°C
(91°F)		34°C
(93°F)		36°C
(96°F)		35°C
(95°F)		33°C
(92°F)		29°C
(85°F)		25°C
(78°F)		21°C
(71°F)
Average high13°C
(56°F)		13°C
(55°F)		15°C
(60°F)		19°C
(67°F)		25°C
(77°F)		30°C
(86°F)		31°C
(89°F)		30°C
(87°F)		27°C
(82°F)		22°C
(73°F)		17°C
(63°F)		15°C
(59°F)
Daily mean8°C
(47°F)		8°C
(47°F)		11°C
(52°F)		14°C
(58°F)		20°C
(68°F)		25°C
(77°F)		27°C
(81°F)		26°C
(79°F)		23°C
(74°F)		18°C
(65°F)		13°C
(56°F)		10°C
(51°F)
Average low4°C
(39°F)		4°C
(40°F)		7°C
(46°F)		10°C
(51°F)		15°C
(60°F)		20°C
(68°F)		23°C
(73°F)		22°C
(71°F)		19°C
(66°F)		14°C
(57°F)		10°C
(50°F)		6°C
(44°F)
Mean minimum-3°C
(26°F)		-3°C
(28°F)		2°C
(37°F)		4°C
(40°F)		11°C
(52°F)		16°C
(60°F)		19°C
(66°F)		18°C
(65°F)		14°C
(58°F)		8°C
(47°F)		3°C
(38°F)		1°C
(34°F)
Minimum-9°C
(17°F)		-8°C
(18°F)		0°C
(33°F)		1°C
(35°F)		9°C
(48°F)		15°C
(59°F)		16°C
(61°F)		14°C
(58°F)		13°C
(55°F)		7°C
(46°F)		2°C
(35°F)		-4°C
(25°F)

Compare climate in Siahkal with other places

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

Monthly average precipitation in Siahkal, Iran

Siahkal usually has the most precipitation in September, October and November, with an average of 14 rainy days and 177 mm (7.0 inches) of precipitation per month. The driest months in Siahkal are May, June and July. On average, 56 mm (2.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Siahkal. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)102 (4.0)142 (5.6)107 (4.2)109 (4.3)44 (1.8)32 (1.3)91 (3.6)96 (3.8)149 (5.8)182 (7.2)199 (7.8)117 (4.6)
Average precipitation days (≥ 1 mm)91215129510101614149

Monthly sunshine hours in Siahkal, Iran

The sunniest months in Siahkal are May, June and July, when the sun shines an average of 12 hours 29 minutes a day. Least sunny months in Siahkal: January, February and November receive an average of 7 hours 35 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Siahkal. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours205245301314376390380363318284231248
Mean daily daylight hours9h 54m10h 48m11h 58m13h 9m14h 9m14h 39m14h 23m13h 31m12h 22m11h 12m10h 10m9h 38m

Solar UV radiation in Siahkal, Iran

Siahkal experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / Extreme category of sun exposure. January, February and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 4. For more detailed information, check out our hourly Siahkal UV Index data.

Average daily maximum UV levels by month for Siahkal. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)448811101098643