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The climate of Bern is characterized by a pre-Alpine continental climate, with rather abundant rainfall especially in the summer months.
The average minimum temperatures are normally below zero between the months of December and February, reaching a minimum of -3.6 ° C in January and reaching 12 ° C in July and August. The maximum average temperatures reach 24 ° C in the months of July and August and drop to 2.8 ° C in January. The average annual temperature in Bern is 8.8 ° C.
Average maximum temperatures above 25 ° C occur on average for 33 days a year, while the average of days above 30 ° C is only 3 days a year. The average minimum temperatures below zero (frost days) occur on average for 83 days a year, while the average maximum temperatures below zero (ice days) occur on average for 18 days a year. Bern has an average of 1,682 hours of sunshine per year.
The average amount of rainfall is around 1,000 mm per year, the months with the least rainfall are those between September and April. The rainiest months are from May to August. The rainfall in the summer months is almost double that of the winter months. The rainy days are on average 124 in a year. The month with the most rainy days is May with over 12 rainy days.
Snow in winter is a common occurrence, the snow days are 14 per year, the most frequent snowfalls occur in the months between December and March. About 52 cm of snow falls annually in Bern.
WHEN TO GO TO BERN
Bern can be visited all year round, even if the summer months are considerably rainier than the other months of the year, but in spring and summer the temperatures are warmer and more pleasant.
THE CLIMATE OF BERN: CLIMATE TABLES
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| BERN (540 meters) | ||||
| Month | Average low (°C) | Average high (°C) | Precip. (mm) | Precip. days (snowy days) |
| January | -3,6 | 2,8 | 60 | 9,6 (4,1) |
| February | -3,1 | 4,7 | 55 | 9,0 (3,5) |
| March | 0,2 | 9,5 | 73 | 10,6 (2,0) |
| April | 3,0 | 13,4 | 82 | 10,4 (0,3) |
| May | 7,4 | 18,2 | 119 | 12,6 |
| June | 10,5 | 21,6 | 111 | 11,1 |
| July | 12,5 | 24,3 | 106 | 10,8 |
| August | 12,3 | 23,7 | 116 | 10,7 |
| September | 8,9 | 19,1 | 99 | 8,9 |
| October | 5,4 | 13,8 | 88 | 10,4 |
| November | 0,4 | 7,3 | 76 | 10,2 (1,1) |
| December | -2,3 | 3,5 | 74 | 9,9 (3,1) |
| YEAR | 4,3 | 13,5 | 1059 | 124,2 (14,1) |
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