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Monthly climate in Basel, Switzerland

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Basel features a oceanic climate (Cfb).Temperatures typically range between 1 °C (35 °F) and 20 °C (68 °F) through the year, but rarely can drop to -14 °C (7 °F) or can rise to as high as 37 °C (98 °F).The average annual precipitation amounts to about 1180 mm (46.4 inches) and receives 167 rainy days on the 1 mm (0.04 inches) threshold annually.Basel enjoys an average of 3462 hours of sunshine throughout the year, and daylight varies from 8 hours 29 minutes to 15 hours 53 minutes per day.

Monthly average temperatures in Basel, Switzerland §

The warmest months in Basel are June, July and August, with daily mean temperatures ranging from 19 to 20 °C (66 - 68 °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 - 39 °F) throughout the day. On average each year, Basel experiences 48 days above 25 °C (77.0 °F) and 69 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Basel, 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 16°C
(61°F)		 18°C
(65°F)		 21°C
(71°F)		 26°C
(79°F)		 30°C
(87°F)		 34°C
(94°F)		 37°C
(98°F)		 35°C
(95°F)		 30°C
(86°F)		 24°C
(76°F)		 21°C
(70°F)		 14°C
(57°F)
Mean maximum 11°C
(53°F)		 16°C
(60°F)		 19°C
(66°F)		 23°C
(74°F)		 27°C
(80°F)		 29°C
(85°F)		 32°C
(90°F)		 32°C
(90°F)		 28°C
(83°F)		 22°C
(72°F)		 17°C
(63°F)		 13°C
(56°F)
Average high 4°C
(40°F)		 8°C
(46°F)		 11°C
(52°F)		 16°C
(60°F)		 18°C
(65°F)		 24°C
(75°F)		 25°C
(78°F)		 25°C
(77°F)		 21°C
(70°F)		 16°C
(60°F)		 8°C
(47°F)		 5°C
(42°F)
Daily mean 1°C
(35°F)		 4°C
(39°F)		 6°C
(43°F)		 10°C
(50°F)		 13°C
(56°F)		 19°C
(66°F)		 20°C
(68°F)		 20°C
(68°F)		 16°C
(60°F)		 11°C
(51°F)		 5°C
(41°F)		 3°C
(38°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
(57°F)		 15°C
(59°F)		 15°C
(58°F)		 11°C
(51°F)		 7°C
(44°F)		 3°C
(37°F)		 1°C
(34°F)
Mean minimum -7°C
(19°F)		 -7°C
(20°F)		 -5°C
(23°F)		 -3°C
(27°F)		 3°C
(37°F)		 7°C
(45°F)		 10°C
(50°F)		 8°C
(47°F)		 4°C
(39°F)		 1°C
(34°F)		 -2°C
(28°F)		 -5°C
(24°F)
Minimum -13°C
(8°F)		 -14°C
(7°F)		 -13°C
(9°F)		 -4°C
(25°F)		 0°C
(32°F)		 5°C
(42°F)		 8°C
(47°F)		 6°C
(43°F)		 1°C
(35°F)		 -1°C
(30°F)		 -4°C
(25°F)		 -5°C
(23°F)

Compare climate in Basel with other places

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

Monthly average precipitation in Basel, Switzerland §

Basel usually has the most precipitation in May, June and December, with an average of 17 rainy days and 129 mm (5.1 inches) of precipitation per month.The driest months in Basel are February, April and September. On average, 68 mm (2.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Basel, 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) 94 (3.7) 77 (3.0) 91 (3.6) 62 (2.4) 133 (5.2) 125 (4.9) 117 (4.6) 115 (4.5) 67 (2.6) 92 (3.6) 79 (3.1) 129 (5.1)
Average precipitation days (≥ 1 mm) 12 12 15 10 17 16 14 15 10 14 13 19

Monthly sunshine hours in Basel, Switzerland §

The sunniest months in Basel are June, July and August, when the sun shines an average of 12 hours 50 minutes a day.Least sunny months in Basel: January, November and December receive an average of 5 hours 15 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Basel, 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 135 210 283 353 361 388 412 380 322 265 191 156
Mean daily daylight hours 8h 54m 10h 15m 11h 56m 13h 39m 15h 8m 15h 53m 15h 29m 14h 10m 12h 31m 10h 48m 9h 16m 8h 29m

Solar UV radiation in Basel, Switzerland §

Basel experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 8 - 9, which corresponds to the Very High category of sun exposure.January, November and December are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 2. For more detailed information, check out our hourly Basel UV Index data.

Average daily maximum UV levels by month for Basel, 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 5 6 8 9 9 8 6 4 2 1