nomadseason

Monthly climate in Jastarnia, Poland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Jastarnia features a oceanic climate (Cfb). Temperatures typically range between 2 °C (36 °F) and 19 °C (67 °F) through the year, but rarely can drop to -9 °C (16 °F) or can rise to as high as 27 °C (81 °F). The average annual precipitation amounts to about 797 mm (31.4 inches) and receives 153 rainy days on the 1 mm (0.04 inches) threshold annually. Jastarnia enjoys an average of 3492 hours of sunshine throughout the year, and daylight varies from 7 hours 19 minutes to 17 hours 11 minutes per day.

Monthly average temperatures in Jastarnia, Poland

The warmest months in Jastarnia are June, July and August, with daily mean temperatures ranging from 17 to 19 °C (62 - 67 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 2 to 3 °C (36 - 38 °F) throughout the day. On average each year, Jastarnia experiences 2 days above 25 °C (77.0 °F) and 23 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Jastarnia. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum10°C
(50°F)		13°C
(55°F)		10°C
(51°F)		16°C
(60°F)		20°C
(68°F)		26°C
(79°F)		26°C
(79°F)		27°C
(81°F)		26°C
(78°F)		19°C
(66°F)		15°C
(59°F)		10°C
(50°F)
Mean maximum8°C
(47°F)		8°C
(48°F)		9°C
(48°F)		13°C
(56°F)		17°C
(62°F)		21°C
(71°F)		24°C
(76°F)		24°C
(76°F)		23°C
(74°F)		17°C
(64°F)		13°C
(56°F)		9°C
(48°F)
Average high4°C
(39°F)		3°C
(38°F)		5°C
(41°F)		8°C
(46°F)		12°C
(53°F)		18°C
(64°F)		20°C
(68°F)		20°C
(69°F)		18°C
(64°F)		13°C
(56°F)		9°C
(48°F)		5°C
(41°F)
Daily mean2°C
(37°F)		2°C
(36°F)		3°C
(38°F)		6°C
(43°F)		10°C
(51°F)		17°C
(62°F)		18°C
(65°F)		19°C
(67°F)		16°C
(61°F)		12°C
(54°F)		8°C
(46°F)		4°C
(39°F)
Average low1°C
(35°F)		1°C
(34°F)		2°C
(36°F)		5°C
(41°F)		9°C
(49°F)		15°C
(60°F)		17°C
(63°F)		18°C
(64°F)		15°C
(59°F)		11°C
(52°F)		7°C
(45°F)		3°C
(37°F)
Mean minimum-3°C
(26°F)		-4°C
(26°F)		-2°C
(29°F)		1°C
(35°F)		5°C
(41°F)		11°C
(52°F)		14°C
(58°F)		15°C
(59°F)		12°C
(53°F)		7°C
(44°F)		2°C
(36°F)		-1°C
(30°F)
Minimum-7°C
(19°F)		-8°C
(18°F)		-9°C
(16°F)		0°C
(33°F)		2°C
(37°F)		9°C
(48°F)		13°C
(56°F)		14°C
(58°F)		11°C
(51°F)		6°C
(42°F)		-1°C
(30°F)		-4°C
(25°F)

Compare climate in Jastarnia with other places

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

Monthly average precipitation in Jastarnia, Poland

Jastarnia usually has the most precipitation in July, September and October, with an average of 15 rainy days and 95 mm (3.7 inches) of precipitation per month. The driest months in Jastarnia are April, May and June. On average, 43 mm (1.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Jastarnia. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)64 (2.5)51 (2.0)51 (2.0)30 (1.2)50 (2.0)51 (2.0)81 (3.2)60 (2.4)89 (3.5)114 (4.5)77 (3.0)81 (3.2)
Average precipitation days (≥ 1 mm)141313797121115181717

Monthly sunshine hours in Jastarnia, Poland

The sunniest months in Jastarnia are May, June and July, when the sun shines an average of 14 hours 29 minutes a day. Least sunny months in Jastarnia: January, November and December receive an average of 4 hours 7 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Jastarnia. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours99192266361432456444400316242154126
Mean daily daylight hours7h 54m9h 42m11h 53m14h 8m16h 7m17h 11m16h 37m14h 49m12h 39m10h 26m8h 25m7h 19m

Solar UV radiation in Jastarnia, Poland

Jastarnia experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 6 - 7, which corresponds to the 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 Jastarnia UV Index data.

Average daily maximum UV levels by month for Jastarnia. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)124567765311