nomadseason

Monthly climate in Sterna, Greece

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Sterna features a hot-summer Mediterranean climate (Csa). Temperatures typically range between 4 °C (40 °F) and 27 °C (81 °F) through the year, but rarely can drop to -12 °C (10 °F) or can rise to as high as 41 °C (106 °F). The average annual precipitation amounts to about 668 mm (26.3 inches) and receives 87 rainy days on the 1 mm (0.04 inches) threshold annually. Sterna enjoys an average of 3754 hours of sunshine throughout the year, and daylight varies from 9 hours 13 minutes to 15 hours 6 minutes per day.

Monthly average temperatures in Sterna, Greece

The warmest months in Sterna are June, July and August, with daily mean temperatures ranging from 23 to 27 °C (74 - 81 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 4 to 7 °C (40 - 46 °F) throughout the day. On average each year, Sterna experiences 117 days above 25 °C (77.0 °F) and 36 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Sterna. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum18°C
(65°F)		20°C
(68°F)		23°C
(73°F)		28°C
(83°F)		33°C
(92°F)		38°C
(100°F)		41°C
(106°F)		39°C
(103°F)		36°C
(97°F)		34°C
(94°F)		25°C
(78°F)		20°C
(69°F)
Mean maximum15°C
(59°F)		18°C
(65°F)		21°C
(71°F)		26°C
(79°F)		31°C
(87°F)		35°C
(95°F)		38°C
(101°F)		38°C
(100°F)		35°C
(95°F)		28°C
(82°F)		23°C
(73°F)		19°C
(66°F)
Average high8°C
(47°F)		12°C
(53°F)		14°C
(58°F)		19°C
(67°F)		25°C
(77°F)		29°C
(85°F)		33°C
(91°F)		34°C
(93°F)		29°C
(85°F)		22°C
(72°F)		16°C
(61°F)		11°C
(53°F)
Daily mean4°C
(40°F)		7°C
(45°F)		9°C
(48°F)		13°C
(56°F)		19°C
(66°F)		23°C
(74°F)		26°C
(80°F)		27°C
(81°F)		22°C
(73°F)		16°C
(61°F)		11°C
(53°F)		7°C
(46°F)
Average low0°C
(33°F)		3°C
(37°F)		4°C
(40°F)		7°C
(45°F)		13°C
(55°F)		17°C
(64°F)		20°C
(68°F)		20°C
(69°F)		16°C
(61°F)		11°C
(52°F)		8°C
(46°F)		4°C
(40°F)
Mean minimum-7°C
(20°F)		-5°C
(23°F)		-4°C
(25°F)		2°C
(35°F)		7°C
(45°F)		13°C
(56°F)		16°C
(61°F)		16°C
(61°F)		10°C
(49°F)		6°C
(43°F)		0°C
(32°F)		-4°C
(25°F)
Minimum-11°C
(13°F)		-9°C
(16°F)		-12°C
(10°F)		-1°C
(31°F)		5°C
(42°F)		11°C
(53°F)		15°C
(59°F)		14°C
(58°F)		7°C
(45°F)		5°C
(41°F)		-3°C
(26°F)		-6°C
(22°F)

Compare climate in Sterna with other places

Compare temperature, precipitation, sunshine, UV index in Sterna, Greece with other places around the world.

Monthly average precipitation in Sterna, Greece

Sterna usually has the most precipitation in January, October and December, with an average of 8 rainy days and 86 mm (3.4 inches) of precipitation per month. The driest months in Sterna are July, August and September. On average, 21 mm (0.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sterna. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)72 (2.8)58 (2.3)64 (2.5)54 (2.1)45 (1.8)71 (2.8)36 (1.4)10 (0.4)17 (0.7)89 (3.5)54 (2.1)96 (3.8)
Average precipitation days (≥ 1 mm)881078125237611

Monthly sunshine hours in Sterna, Greece

The sunniest months in Sterna are June, July and August, when the sun shines an average of 13 hours 28 minutes a day. Least sunny months in Sterna: January, November and December receive an average of 6 hours 44 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sterna. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours169230288346398407428402342289230219
Mean daily daylight hours9h 32m10h 36m11h 57m13h 20m14h 31m15h 6m14h 48m13h 45m12h 25m11h 3m9h 50m9h 13m

Solar UV radiation in Sterna, Greece

Sterna experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 9 - 10, which corresponds to the Very High category of sun exposure. January, November and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Sterna UV Index data.

Average daily maximum UV levels by month for Sterna. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)24679101097632