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Monthly climate in Skiathos, Greece

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Skiathos features a hot-summer Mediterranean climate (Csa). Temperatures typically range between 11 °C (52 °F) and 26 °C (79 °F) through the year, but rarely can drop to 1 °C (33 °F) or can rise to as high as 33 °C (91 °F). The average annual precipitation amounts to about 833 mm (32.8 inches) and receives 81 rainy days on the 1 mm (0.04 inches) threshold annually. Skiathos enjoys an average of 3861 hours of sunshine throughout the year, and daylight varies from 9 hours 27 minutes to 14 hours 51 minutes per day.

Monthly average temperatures in Skiathos, Greece

The warmest months in Skiathos are July, August and September, with daily mean temperatures ranging from 24 to 26 °C (75 - 79 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 11 to 12 °C (52 - 55 °F) throughout the day. On average each year, Skiathos experiences 67 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 Skiathos. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum18°C
(64°F)		17°C
(64°F)		19°C
(66°F)		21°C
(69°F)		25°C
(77°F)		29°C
(85°F)		32°C
(89°F)		33°C
(91°F)		29°C
(84°F)		26°C
(79°F)		22°C
(73°F)		19°C
(67°F)
Mean maximum16°C
(61°F)		16°C
(61°F)		17°C
(63°F)		19°C
(66°F)		23°C
(74°F)		26°C
(80°F)		30°C
(85°F)		29°C
(85°F)		27°C
(82°F)		24°C
(75°F)		20°C
(69°F)		18°C
(64°F)
Average high12°C
(54°F)		13°C
(56°F)		14°C
(57°F)		15°C
(60°F)		20°C
(68°F)		24°C
(75°F)		26°C
(80°F)		27°C
(81°F)		25°C
(77°F)		21°C
(69°F)		17°C
(63°F)		14°C
(58°F)
Daily mean11°C
(52°F)		12°C
(54°F)		12°C
(55°F)		14°C
(58°F)		18°C
(65°F)		23°C
(73°F)		25°C
(78°F)		26°C
(79°F)		24°C
(75°F)		20°C
(68°F)		16°C
(62°F)		13°C
(56°F)
Average low10°C
(50°F)		11°C
(52°F)		11°C
(53°F)		13°C
(56°F)		17°C
(64°F)		22°C
(72°F)		25°C
(76°F)		25°C
(78°F)		23°C
(73°F)		19°C
(66°F)		16°C
(60°F)		12°C
(54°F)
Mean minimum4°C
(39°F)		6°C
(43°F)		7°C
(45°F)		10°C
(50°F)		15°C
(58°F)		19°C
(66°F)		21°C
(71°F)		22°C
(73°F)		19°C
(66°F)		16°C
(60°F)		12°C
(54°F)		8°C
(47°F)
Minimum1°C
(33°F)		4°C
(39°F)		3°C
(37°F)		7°C
(46°F)		13°C
(56°F)		15°C
(60°F)		20°C
(69°F)		21°C
(71°F)		17°C
(63°F)		14°C
(58°F)		9°C
(49°F)		7°C
(45°F)

Compare climate in Skiathos with other places

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

Monthly average precipitation in Skiathos, Greece

Skiathos usually has the most precipitation in January, February and December, with an average of 11 rainy days and 110 mm (4.3 inches) of precipitation per month. The driest months in Skiathos are May, June and August. On average, 26 mm (1.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Skiathos. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)117 (4.6)95 (3.7)82 (3.2)62 (2.4)31 (1.2)22 (0.9)58 (2.3)26 (1.0)62 (2.5)83 (3.3)80 (3.1)117 (4.6)
Average precipitation days (≥ 1 mm)1210964222481111

Monthly sunshine hours in Skiathos, Greece

The sunniest months in Skiathos are May, June and July, when the sun shines an average of 13 hours 26 minutes a day. Least sunny months in Skiathos: January, February and December receive an average of 7 hours 15 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Skiathos. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours186240320342401409425396345306252233
Mean daily daylight hours9h 45m10h 43m11h 57m13h 14m14h 19m14h 51m14h 34m13h 37m12h 24m11h 7m10h 1m9h 27m

Solar UV radiation in Skiathos, Greece

Skiathos experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 10 - 10, which corresponds to the Very High 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 Skiathos UV Index data.

Average daily maximum UV levels by month for Skiathos. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)346891010108643