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Monthly climate in Onex, Geneva, Switzerland

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Onex features a oceanic climate (Cfb).Temperatures typically range between 1 °C (35 °F) and 19 °C (67 °F) through the year, but rarely can drop to -13 °C (10 °F) or can rise to as high as 35 °C (95 °F).The average annual precipitation amounts to about 1537 mm (60.5 inches) and receives 155 rainy days on the 1 mm (0.04 inches) threshold annually.Onex enjoys an average of 3454 hours of sunshine throughout the year, and daylight varies from 8 hours 40 minutes to 15 hours 41 minutes per day.

Monthly average temperatures in Onex, Geneva, Switzerland §

The warmest months in Onex are June, July and August, with daily mean temperatures ranging from 18 to 19 °C (64 - 67 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 1 to 4 °C (35 - 40 °F) throughout the day. On average each year, Onex experiences 40 days above 25 °C (77.0 °F) and 67 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Onex, Geneva, Switzerland.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 13°C
(56°F)		 19°C
(66°F)		 21°C
(70°F)		 25°C
(77°F)		 29°C
(84°F)		 34°C
(94°F)		 34°C
(93°F)		 35°C
(95°F)		 28°C
(83°F)		 23°C
(73°F)		 18°C
(65°F)		 13°C
(56°F)
Mean maximum 10°C
(50°F)		 16°C
(61°F)		 19°C
(66°F)		 23°C
(73°F)		 26°C
(78°F)		 28°C
(82°F)		 31°C
(89°F)		 32°C
(90°F)		 27°C
(80°F)		 21°C
(70°F)		 16°C
(61°F)		 12°C
(53°F)
Average high 5°C
(41°F)		 8°C
(47°F)		 11°C
(52°F)		 15°C
(60°F)		 18°C
(64°F)		 23°C
(73°F)		 25°C
(77°F)		 24°C
(76°F)		 20°C
(69°F)		 15°C
(60°F)		 9°C
(48°F)		 6°C
(42°F)
Daily mean 1°C
(35°F)		 4°C
(40°F)		 6°C
(44°F)		 10°C
(50°F)		 13°C
(56°F)		 18°C
(64°F)		 19°C
(67°F)		 19°C
(67°F)		 15°C
(60°F)		 11°C
(51°F)		 5°C
(42°F)		 3°C
(37°F)
Average low -1°C
(30°F)		 0°C
(33°F)		 2°C
(35°F)		 4°C
(40°F)		 8°C
(47°F)		 13°C
(55°F)		 14°C
(58°F)		 14°C
(58°F)		 11°C
(51°F)		 6°C
(44°F)		 2°C
(36°F)		 0°C
(32°F)
Mean minimum -7°C
(20°F)		 -5°C
(23°F)		 -5°C
(24°F)		 -3°C
(27°F)		 2°C
(36°F)		 8°C
(46°F)		 9°C
(49°F)		 8°C
(47°F)		 5°C
(41°F)		 1°C
(35°F)		 -2°C
(29°F)		 -6°C
(22°F)
Minimum -13°C
(10°F)		 -12°C
(11°F)		 -11°C
(12°F)		 -5°C
(24°F)		 -1°C
(31°F)		 6°C
(43°F)		 9°C
(48°F)		 6°C
(44°F)		 3°C
(38°F)		 -0°C
(32°F)		 -3°C
(27°F)		 -9°C
(17°F)

Compare climate in Onex with other places

Compare temperature, precipitation, sunshine, UV index in Onex, Geneva, Switzerland with other places around the world.

Monthly average precipitation in Onex, Geneva, Switzerland §

Onex usually has the most precipitation in March, May and December, with an average of 16 rainy days and 183 mm (7.2 inches) of precipitation per month.The driest months in Onex are February, April and September. On average, 83 mm (3.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Onex, Geneva, Switzerland.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) 128 (5.0) 101 (4.0) 151 (5.9) 64 (2.5) 174 (6.8) 130 (5.1) 117 (4.6) 119 (4.7) 83 (3.3) 126 (5.0) 121 (4.7) 224 (8.8)
Average precipitation days (≥ 1 mm) 11 12 14 9 16 15 13 13 10 12 12 18

Monthly sunshine hours in Onex, Geneva, Switzerland §

The sunniest months in Onex are June, July and August, when the sun shines an average of 12 hours 48 minutes a day.Least sunny months in Onex: January, November and December receive an average of 5 hours 28 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Onex, Geneva, Switzerland.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 143 214 279 344 348 390 409 377 319 266 195 165
Mean daily daylight hours 9h 4m 10h 20m 11h 56m 13h 34m 14h 58m 15h 41m 15h 18m 14h 4m 12h 29m 10h 52m 9h 25m 8h 40m

Solar UV radiation in Onex, Geneva, Switzerland §

Onex experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 8 - 10, which corresponds to the Very High category of sun exposure.January, February 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 Onex UV Index data.

Average daily maximum UV levels by month for Onex, Geneva, Switzerland.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) 2 3 6 7 8 10 9 8 6 5 3 2