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Monthly climate in Siemysl, Poland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Siemysl features a oceanic climate (Cfb). Temperatures typically range between 2 °C (35 °F) and 19 °C (66 °F) through the year, but rarely can drop to -17 °C (3 °F) or can rise to as high as 35 °C (96 °F). The average annual precipitation amounts to about 763 mm (30.0 inches) and receives 147 rainy days on the 1 mm (0.04 inches) threshold annually. Siemysl enjoys an average of 3479 hours of sunshine throughout the year, and daylight varies from 7 hours 27 minutes to 17 hours 2 minutes per day.

Monthly average temperatures in Siemysl, Poland

The warmest months in Siemysl are June, July and August, with daily mean temperatures ranging from 18 to 19 °C (65 - 66 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 2 to 3 °C (35 - 37 °F) throughout the day. On average each year, Siemysl experiences 23 days above 25 °C (77.0 °F) and 50 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Siemysl. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum12°C
(54°F)		17°C
(64°F)		18°C
(65°F)		25°C
(77°F)		30°C
(86°F)		34°C
(94°F)		35°C
(96°F)		35°C
(95°F)		32°C
(89°F)		23°C
(74°F)		17°C
(63°F)		11°C
(52°F)
Mean maximum10°C
(51°F)		12°C
(54°F)		16°C
(61°F)		21°C
(71°F)		26°C
(80°F)		28°C
(82°F)		30°C
(87°F)		31°C
(88°F)		28°C
(83°F)		20°C
(69°F)		15°C
(59°F)		10°C
(50°F)
Average high3°C
(38°F)		5°C
(40°F)		7°C
(45°F)		12°C
(54°F)		16°C
(62°F)		22°C
(72°F)		22°C
(72°F)		23°C
(74°F)		19°C
(66°F)		14°C
(57°F)		8°C
(47°F)		4°C
(40°F)
Daily mean2°C
(35°F)		2°C
(36°F)		4°C
(39°F)		8°C
(46°F)		12°C
(55°F)		18°C
(65°F)		18°C
(65°F)		19°C
(66°F)		15°C
(59°F)		11°C
(52°F)		6°C
(44°F)		3°C
(37°F)
Average low-0°C
(32°F)		-0°C
(32°F)		1°C
(33°F)		4°C
(39°F)		8°C
(46°F)		13°C
(56°F)		14°C
(58°F)		14°C
(58°F)		11°C
(53°F)		8°C
(47°F)		4°C
(40°F)		1°C
(34°F)
Mean minimum-8°C
(19°F)		-7°C
(20°F)		-6°C
(21°F)		-2°C
(28°F)		1°C
(34°F)		7°C
(46°F)		10°C
(50°F)		8°C
(47°F)		6°C
(43°F)		3°C
(37°F)		-1°C
(31°F)		-4°C
(25°F)
Minimum-12°C
(11°F)		-13°C
(9°F)		-17°C
(3°F)		-4°C
(25°F)		-0°C
(32°F)		4°C
(39°F)		8°C
(47°F)		7°C
(45°F)		4°C
(39°F)		1°C
(34°F)		-5°C
(23°F)		-10°C
(14°F)

Compare climate in Siemysl with other places

Compare temperature, precipitation, sunshine, UV index in Siemysl, Poland with other places around the world.

Monthly average precipitation in Siemysl, Poland

Siemysl usually has the most precipitation in July, September and October, with an average of 14 rainy days and 89 mm (3.5 inches) of precipitation per month. The driest months in Siemysl are February, April and November. On average, 47 mm (1.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Siemysl. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)60 (2.4)49 (1.9)54 (2.1)40 (1.6)58 (2.3)59 (2.3)117 (4.6)72 (2.8)73 (2.9)76 (3.0)52 (2.0)54 (2.1)
Average precipitation days (≥ 1 mm)13101281310161312161113

Monthly sunshine hours in Siemysl, Poland

The sunniest months in Siemysl are May, June and July, when the sun shines an average of 14 hours 11 minutes a day. Least sunny months in Siemysl: January, November and December receive an average of 4 hours 9 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Siemysl. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours99198276364426443435398303250166114
Mean daily daylight hours8h 1m9h 46m11h 54m14h 5m16h 0m17h 2m16h 29m14h 44m12h 38m10h 28m8h 30m7h 27m

Solar UV radiation in Siemysl, Poland

Siemysl experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 6 - 8, which corresponds to the High / Very High category of sun exposure. January, November and December are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 1. For more detailed information, check out our hourly Siemysl UV Index data.

Average daily maximum UV levels by month for Siemysl. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)124568765311