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Monthly climate in Symi, Greece

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Symi features a hot-summer Mediterranean climate (Csa). Temperatures typically range between 14 °C (57 °F) and 26 °C (80 °F) through the year, but rarely can drop to 4 °C (40 °F) or can rise to as high as 31 °C (88 °F). The average annual precipitation amounts to about 760 mm (29.9 inches) and receives 67 rainy days on the 1 mm (0.04 inches) threshold annually. Symi enjoys an average of 4029 hours of sunshine throughout the year, and daylight varies from 9 hours 41 minutes to 14 hours 36 minutes per day.

Monthly average temperatures in Symi, Greece

The warmest months in Symi are July, August and September, with daily mean temperatures ranging from 25 to 26 °C (77 - 80 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 14 to 15 °C (57 - 58 °F) throughout the day. On average each year, Symi experiences 71 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 Symi. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum19°C
(66°F)		18°C
(65°F)		18°C
(65°F)		22°C
(72°F)		26°C
(79°F)		28°C
(84°F)		30°C
(87°F)		31°C
(88°F)		28°C
(83°F)		26°C
(79°F)		24°C
(75°F)		20°C
(68°F)
Mean maximum17°C
(63°F)		17°C
(63°F)		18°C
(64°F)		20°C
(68°F)		24°C
(76°F)		26°C
(79°F)		29°C
(84°F)		29°C
(85°F)		27°C
(82°F)		25°C
(78°F)		22°C
(72°F)		19°C
(67°F)
Average high15°C
(59°F)		15°C
(60°F)		16°C
(60°F)		17°C
(64°F)		21°C
(69°F)		23°C
(74°F)		26°C
(79°F)		27°C
(81°F)		26°C
(78°F)		23°C
(73°F)		20°C
(68°F)		17°C
(62°F)
Daily mean14°C
(57°F)		14°C
(58°F)		15°C
(58°F)		17°C
(62°F)		20°C
(68°F)		23°C
(73°F)		25°C
(78°F)		26°C
(80°F)		25°C
(77°F)		22°C
(72°F)		19°C
(67°F)		16°C
(61°F)
Average low13°C
(55°F)		14°C
(57°F)		14°C
(57°F)		16°C
(61°F)		19°C
(67°F)		22°C
(72°F)		25°C
(76°F)		26°C
(78°F)		24°C
(76°F)		21°C
(71°F)		19°C
(66°F)		15°C
(59°F)
Mean minimum7°C
(46°F)		9°C
(49°F)		10°C
(49°F)		13°C
(55°F)		17°C
(62°F)		19°C
(67°F)		23°C
(73°F)		24°C
(76°F)		22°C
(72°F)		18°C
(65°F)		15°C
(59°F)		11°C
(52°F)
Minimum4°C
(40°F)		5°C
(42°F)		6°C
(43°F)		10°C
(51°F)		15°C
(60°F)		16°C
(62°F)		21°C
(70°F)		24°C
(75°F)		20°C
(69°F)		16°C
(60°F)		12°C
(55°F)		10°C
(49°F)

Compare climate in Symi with other places

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

Monthly average precipitation in Symi, Greece

Symi usually has the most precipitation in January, November and December, with an average of 13 rainy days and 167 mm (6.6 inches) of precipitation per month. The driest months in Symi are July, August and September. On average, 1 mm (0.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Symi. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)169 (6.6)86 (3.4)85 (3.3)27 (1.0)7 (0.3)4 (0.2)0 (0.0)0 (0.0)1 (0.1)49 (1.9)117 (4.6)216 (8.5)
Average precipitation days (≥ 1 mm)151084100004817

Monthly sunshine hours in Symi, Greece

The sunniest months in Symi are May, June and July, when the sun shines an average of 13 hours 22 minutes a day. Least sunny months in Symi: January, February and December receive an average of 8 hours 21 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Symi. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours219271336354399408422395348325277269
Mean daily daylight hours9h 57m10h 50m11h 58m13h 8m14h 7m14h 36m14h 21m13h 29m12h 22m11h 12m10h 12m9h 41m

Solar UV radiation in Symi, Greece

Symi experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / Extreme category of sun exposure. January, November 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 Symi UV Index data.

Average daily maximum UV levels by month for Symi. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)3579101110109743