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Monthly climate in Jam, Iran

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Jam features a hot desert climate (BWh). Temperatures typically range between 17 °C (63 °F) and 34 °C (93 °F) through the year, but rarely can drop to 6 °C (42 °F) or can rise to as high as 39 °C (103 °F). The average annual precipitation amounts to about 233 mm (9.2 inches) and receives 18 rainy days on the 1 mm (0.04 inches) threshold annually. Jam enjoys an average of 3956 hours of sunshine throughout the year, and daylight varies from 10 hours 23 minutes to 13 hours 51 minutes per day.

Monthly average temperatures in Jam, Iran

The warmest months in Jam are June, July and August, with daily mean temperatures ranging from 33 to 34 °C (91 - 93 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 17 to 20 °C (63 - 68 °F) throughout the day. On average each year, Jam experiences 207 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 Jam. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum26°C
(78°F)		25°C
(77°F)		29°C
(84°F)		33°C
(92°F)		38°C
(100°F)		39°C
(103°F)		39°C
(102°F)		39°C
(102°F)		37°C
(100°F)		36°C
(96°F)		31°C
(89°F)		26°C
(79°F)
Mean maximum23°C
(73°F)		23°C
(74°F)		26°C
(80°F)		31°C
(89°F)		35°C
(96°F)		38°C
(100°F)		38°C
(101°F)		38°C
(101°F)		37°C
(98°F)		34°C
(94°F)		30°C
(86°F)		25°C
(77°F)
Average high20°C
(68°F)		20°C
(69°F)		23°C
(74°F)		27°C
(82°F)		31°C
(88°F)		35°C
(95°F)		35°C
(95°F)		35°C
(96°F)		34°C
(94°F)		31°C
(89°F)		26°C
(79°F)		22°C
(72°F)
Daily mean17°C
(63°F)		18°C
(64°F)		21°C
(70°F)		25°C
(77°F)		29°C
(84°F)		33°C
(91°F)		33°C
(92°F)		34°C
(93°F)		32°C
(90°F)		29°C
(85°F)		24°C
(75°F)		20°C
(68°F)
Average low15°C
(59°F)		15°C
(60°F)		18°C
(65°F)		23°C
(73°F)		27°C
(80°F)		30°C
(87°F)		31°C
(89°F)		32°C
(89°F)		30°C
(86°F)		27°C
(80°F)		21°C
(71°F)		17°C
(63°F)
Mean minimum11°C
(51°F)		11°C
(51°F)		14°C
(57°F)		19°C
(66°F)		23°C
(75°F)		28°C
(82°F)		30°C
(86°F)		30°C
(86°F)		27°C
(81°F)		23°C
(74°F)		17°C
(62°F)		13°C
(56°F)
Minimum8°C
(47°F)		6°C
(42°F)		11°C
(52°F)		17°C
(62°F)		22°C
(72°F)		27°C
(80°F)		29°C
(85°F)		29°C
(85°F)		26°C
(79°F)		21°C
(71°F)		15°C
(60°F)		11°C
(53°F)

Compare climate in Jam with other places

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

Monthly average precipitation in Jam, Iran

Jam usually has the most precipitation in February, November and December, with an average of 3 rainy days and 51 mm (2.0 inches) of precipitation per month. The driest months in Jam are June, July and September. On average, 0 mm (0.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Jam. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)33 (1.3)75 (2.9)34 (1.3)8 (0.3)1 (0.0)0 (0.0)0 (0.0)1 (0.0)1 (0.0)2 (0.1)38 (1.5)41 (1.6)
Average precipitation days (≥ 1 mm)344100000033

Monthly sunshine hours in Jam, Iran

The sunniest months in Jam are May, June and July, when the sun shines an average of 12 hours 18 minutes a day. Least sunny months in Jam: January, February and November receive an average of 9 hours 5 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Jam. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours243278328341377377378368340329295297
Mean daily daylight hours10h 35m11h 12m12h 0m12h 49m13h 31m13h 51m13h 41m13h 4m12h 17m11h 28m10h 45m10h 23m

Solar UV radiation in Jam, Iran

Jam experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 11 - 12, 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 6. For more detailed information, check out our hourly Jam UV Index data.

Average daily maximum UV levels by month for Jam. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)6710101211121010865