Climate averages 1991–2020

Weather in Switzerland.

ClimaNote covers 8 cities in Switzerland, starting with Zürich, Geneva and Basel. Open a city for charts and a table of all 12 months, or open a month for a side-by-side comparison of cities in the atlas.

Across these cities the yearly average high ranges from 12.2°C in Sankt Gallen to 14.9°C in Basel, and yearly rainfall from 1,108 mm in Bern to 1,862 mm in Luzern. The hottest city-month is July in Basel, with an average high of 24.5°C (tied with August in Basel), and the coolest is January in Sankt Gallen, at 2.8°C. By single month, the most rain falls in July in Luzern, with 212 mm, and the least in February in Winterthur, with 69 mm.

July is the warmest month in 4 cities and August in 1 (in 3 other cities two or more months tie); January is the coolest in every city. May is the wettest month in 4 cities, August in 2, July in 1 and December in 1; February is the driest in 7 cities and April in 1. None of these cities has a month with an average high below 2.0°C, a month with under 1 mm of rain or a month with more than 300 mm of rain.