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Monthly climate in Rio, West Greece, Greece

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Rio features a hot-summer Mediterranean climate (Csa).Temperatures typically range between 8 °C (46 °F) and 27 °C (80 °F) through the year, but rarely can drop to -4 °C (26 °F) or can rise to as high as 38 °C (101 °F).The average annual precipitation amounts to about 949 mm (37.4 inches) and receives 100 rainy days on the 1 mm (0.04 inches) threshold annually.Rio enjoys an average of 3914 hours of sunshine throughout the year, and daylight varies from 9 hours 31 minutes to 14 hours 46 minutes per day.

Monthly average temperatures in Rio, West Greece, Greece §

The warmest months in Rio are July, August and September, with daily mean temperatures ranging from 23 to 27 °C (73 - 80 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 8 to 10 °C (46 - 50 °F) throughout the day. On average each year, Rio experiences 100 days above 25 °C (77.0 °F) and 2 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Rio, West Greece, Greece.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 22°C
(72°F)		 21°C
(69°F)		 24°C
(76°F)		 28°C
(83°F)		 36°C
(96°F)		 34°C
(94°F)		 37°C
(98°F)		 38°C
(101°F)		 35°C
(95°F)		 32°C
(90°F)		 27°C
(81°F)		 18°C
(65°F)
Mean maximum 16°C
(61°F)		 18°C
(64°F)		 20°C
(69°F)		 24°C
(76°F)		 30°C
(86°F)		 32°C
(90°F)		 35°C
(95°F)		 36°C
(97°F)		 33°C
(91°F)		 28°C
(82°F)		 23°C
(74°F)		 17°C
(63°F)
Average high 11°C
(52°F)		 13°C
(56°F)		 14°C
(58°F)		 18°C
(65°F)		 23°C
(73°F)		 27°C
(80°F)		 31°C
(87°F)		 32°C
(89°F)		 27°C
(81°F)		 22°C
(72°F)		 18°C
(64°F)		 13°C
(56°F)
Daily mean 8°C
(46°F)		 9°C
(49°F)		 10°C
(51°F)		 14°C
(57°F)		 18°C
(65°F)		 22°C
(72°F)		 26°C
(79°F)		 27°C
(80°F)		 23°C
(73°F)		 18°C
(64°F)		 14°C
(58°F)		 10°C
(50°F)
Average low 5°C
(41°F)		 6°C
(43°F)		 7°C
(45°F)		 9°C
(49°F)		 14°C
(57°F)		 18°C
(64°F)		 21°C
(70°F)		 22°C
(72°F)		 18°C
(65°F)		 14°C
(57°F)		 11°C
(52°F)		 7°C
(45°F)
Mean minimum -1°C
(30°F)		 2°C
(35°F)		 2°C
(36°F)		 5°C
(42°F)		 10°C
(51°F)		 13°C
(56°F)		 18°C
(65°F)		 19°C
(67°F)		 14°C
(58°F)		 10°C
(50°F)		 6°C
(44°F)		 3°C
(38°F)
Minimum -4°C
(26°F)		 -1°C
(31°F)		 -0°C
(32°F)		 4°C
(40°F)		 8°C
(47°F)		 11°C
(52°F)		 17°C
(63°F)		 18°C
(65°F)		 12°C
(54°F)		 8°C
(47°F)		 4°C
(40°F)		 1°C
(35°F)

Compare climate in Rio with other places

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

Monthly average precipitation in Rio, West Greece, Greece §

Rio usually has the most precipitation in January, November and December, with an average of 12 rainy days and 151 mm (5.9 inches) of precipitation per month.The driest months in Rio are May, July and August. On average, 26 mm (1.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Rio, West Greece, Greece.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 147 (5.8) 103 (4.1) 97 (3.8) 55 (2.2) 37 (1.5) 40 (1.6) 23 (0.9) 17 (0.7) 49 (1.9) 76 (3.0) 127 (5.0) 178 (7.0)
Average precipitation days (≥ 1 mm) 13 10 12 8 8 6 3 3 4 8 10 15

Monthly sunshine hours in Rio, West Greece, Greece §

The sunniest months in Rio are May, June and July, when the sun shines an average of 13 hours 18 minutes a day.Least sunny months in Rio: January, February and December receive an average of 7 hours 46 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Rio, West Greece, Greece.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 203 259 327 342 396 407 420 394 346 310 260 244
Mean daily daylight hours 9h 49m 10h 45m 11h 58m 13h 12m 14h 15m 14h 46m 14h 30m 13h 34m 12h 23m 11h 9m 10h 4m 9h 31m

Solar UV radiation in Rio, West Greece, Greece §

Rio 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 Rio UV Index data.

Average daily maximum UV levels by month for Rio, West Greece, Greece.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 3 5 6 8 10 11 10 10 8 6 4 3