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Monthly climate in Gialos, Greece

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Gialos features a hot-summer Mediterranean climate (Csa). Temperatures typically range between 10 °C (51 °F) and 27 °C (80 °F) through the year, but rarely can drop to 0 °C (32 °F) or can rise to as high as 38 °C (101 °F). The average annual precipitation amounts to about 549 mm (21.6 inches) and receives 77 rainy days on the 1 mm (0.04 inches) threshold annually. Gialos enjoys an average of 3974 hours of sunshine throughout the year, and daylight varies from 9 hours 48 minutes to 14 hours 28 minutes per day.

Monthly average temperatures in Gialos, Greece

The warmest months in Gialos are July, August and September, with daily mean temperatures ranging from 24 to 27 °C (75 - 80 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 10 to 12 °C (51 - 54 °F) throughout the day. On average each year, Gialos experiences 102 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 Gialos. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum23°C
(74°F)		19°C
(67°F)		23°C
(74°F)		27°C
(81°F)		36°C
(96°F)		35°C
(95°F)		37°C
(98°F)		38°C
(101°F)		33°C
(91°F)		32°C
(90°F)		25°C
(78°F)		19°C
(67°F)
Mean maximum17°C
(63°F)		18°C
(64°F)		20°C
(68°F)		25°C
(77°F)		30°C
(87°F)		31°C
(88°F)		34°C
(93°F)		34°C
(94°F)		31°C
(89°F)		27°C
(81°F)		24°C
(75°F)		19°C
(66°F)
Average high13°C
(55°F)		14°C
(57°F)		15°C
(59°F)		19°C
(66°F)		23°C
(74°F)		26°C
(80°F)		30°C
(86°F)		30°C
(86°F)		27°C
(81°F)		23°C
(73°F)		19°C
(67°F)		15°C
(59°F)
Daily mean10°C
(51°F)		11°C
(52°F)		12°C
(54°F)		15°C
(60°F)		19°C
(67°F)		23°C
(73°F)		26°C
(79°F)		27°C
(80°F)		24°C
(75°F)		20°C
(68°F)		16°C
(62°F)		13°C
(55°F)
Average low8°C
(47°F)		9°C
(48°F)		9°C
(49°F)		12°C
(53°F)		16°C
(61°F)		19°C
(66°F)		23°C
(73°F)		24°C
(75°F)		21°C
(70°F)		17°C
(63°F)		14°C
(58°F)		10°C
(51°F)
Mean minimum3°C
(37°F)		5°C
(41°F)		6°C
(43°F)		8°C
(47°F)		12°C
(54°F)		15°C
(59°F)		19°C
(67°F)		21°C
(70°F)		17°C
(64°F)		14°C
(57°F)		10°C
(51°F)		7°C
(45°F)
Minimum-0°C
(32°F)		3°C
(37°F)		3°C
(38°F)		6°C
(44°F)		10°C
(51°F)		13°C
(55°F)		18°C
(65°F)		20°C
(69°F)		17°C
(62°F)		12°C
(54°F)		7°C
(45°F)		5°C
(42°F)

Compare climate in Gialos with other places

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

Monthly average precipitation in Gialos, Greece

Gialos usually has the most precipitation in January, February and December, with an average of 13 rainy days and 94 mm (3.7 inches) of precipitation per month. The driest months in Gialos are June, July and August. On average, 6 mm (0.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Gialos. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)94 (3.7)77 (3.0)67 (2.6)28 (1.1)19 (0.7)12 (0.5)3 (0.1)2 (0.1)29 (1.1)39 (1.5)69 (2.7)112 (4.4)
Average precipitation days (≥ 1 mm)1510943300271014

Monthly sunshine hours in Gialos, Greece

The sunniest months in Gialos are May, June and July, when the sun shines an average of 13 hours 19 minutes a day. Least sunny months in Gialos: January, February and December receive an average of 8 hours 5 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Gialos. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours212264329348397407421393351318271259
Mean daily daylight hours10h 4m10h 54m11h 58m13h 5m14h 1m14h 28m14h 14m13h 25m12h 21m11h 15m10h 18m9h 48m

Solar UV radiation in Gialos, Greece

Gialos 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, February and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Gialos UV Index data.

Average daily maximum UV levels by month for Gialos. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)3579101110109753