Climate Chart of Bern, Switzerland

Climate overview

Temperature

The coolest monthly mean is 0.7 °C in January, while the warmest is 19.3 °C in July. These are monthly mean temperatures, not daytime maximums, so they give a broad guide to each month's average conditions rather than the full range visitors may encounter. Across the calendar-month means, the unweighted mean is 9.6 °C. It summarizes the monthly figures evenly rather than weighting them by the number of days in each month, and should not be read as a day-by-day forecast.

Rain

Mean daily rainfall is lowest at 1.76 mm/day in February, which may suit visitors prioritising lower average rainfall. The highest monthly mean is 4.53 mm/day in May; plan for rain protection if travelling then. These are daily mean amounts, not monthly totals, and they do not indicate how often rain falls or guarantee dry days. The unweighted mean across monthly mean daily rainfall figures is 2.99 mm/day. This provides a broad summary, but does not describe the timing or frequency of individual wet days.

Snow

Mean daily snowfall is highest at 6.63 mm/day in February. The unweighted mean across the monthly snowfall figures is 2.38 mm/day per day. These averages record snowfall amounts; they do not establish how many days have snow, snow depth or cover, or whether conditions are suitable for skiing.

Sunshine

Mean daily sunshine reaches its highest level, 11.70 hours/day, in July, and its lowest, 4.56 hours/day, in December. These figures can help with planning outdoor time, but sunshine duration is not the same as day length and does not promise clear skies on a particular day. The unweighted mean of the monthly sunshine figures is 8.23 hours/day per day. It summarizes the month-level averages rather than describing conditions on any individual date.