Weather by month for Bern, the best months to go and how Switzerland's regions differ, scored from 10 years of climate data.
Aug, Sep
The highest month scores: comfortable temperatures, little rain and plenty of sun.
Highs 19°C to 24°C · 11–13 rain days
May, Jun, Jul, Oct
Still good weather, just not quite the top months.
Highs 15°C to 24°C · 12–17 rain days
Jan, Feb, Mar, Nov, Dec
The weakest weather of the year: too hot, too cold or too wet.
Highs 4°C to 10°C · 12–14 rain days
Weather by month
Average highs and lows, rain days, sunshine and our month score out of 10.
| Month | High / low | Rain days | Sunshine | Score |
|---|---|---|---|---|
| January | 4°C / -3°C | 14 days (96 mm) | 5.2 h/day | 1.3/10 |
| February | 7°C / -1°C | 12 days (71 mm) | 6.5 h/day | 2.3/10 |
| March | 10°C / 0°C | 14 days (80 mm) | 8.2 h/day | 3.7/10 |
| April | 14°C / 3°C | 13 days (94 mm) | 10.0 h/day | 5.6/10 |
| May | 17°C / 8°C | 17 days (142 mm) | 10.2 h/day | 6.7/10 |
| June | 22°C / 13°C | 16 days (135 mm) | 11.7 h/day | 7.1/10 |
| July | 24°C / 14°C | 15 days (115 mm) | 12.5 h/day | 7.2/10 |
| Best month: August | 24°C / 14°C | 13 days (111 mm) | 10.9 h/day | 7.5/10 |
| Best month: September | 19°C / 10°C | 11 days (88 mm) | 9.7 h/day | 7.8/10 |
| October | 15°C / 6°C | 12 days (96 mm) | 7.5 h/day | 6.1/10 |
| November | 8°C / 1°C | 13 days (100 mm) | 5.6 h/day | 2.1/10 |
| December | 5°C / -1°C | 14 days (105 mm) | 5.0 h/day | 1.5/10 |
Figures for Bern; the country's best months are weighted across its cities. Best months are highlighted. How we score months
Month by month
4°C / -3°C · 14 rain days · 5.2 h sun
Bern's daily high is just 4°C, with lows around -2.7°C and 14.3 rain (or snow) days. With only 5.2 hours of sun, skies stay grey a lot of the time. The score is 1.3, a tough-weather month overall, though it is prime time for skiing in the Alps. New Year's Day falls on 1 January.
7°C / -1°C · 12 rain days · 6.5 h sun
Temperatures creep up to a 6.9°C high, with lows near -1.4°C and 12 rain days. Sun hours rise slightly to 6.5, but the month still scores only 2.3. Cold, damp conditions persist in the lowlands, while mountain resorts keep good snow cover for winter sports.
10°C / 0°C · 14 rain days · 8.2 h sun
Highs reach 10.1°C and lows climb to 0.4°C, with 13.5 rain days and 80mm of rain. Sun hours grow to 8.2, a sign spring is near, but the month still scores 3.7. Weather is changeable, with a mix of cold snaps and milder spells.
14°C / 3°C · 13 rain days · 10.0 h sun
Highs hit 13.7°C and lows 3.2°C, with 12.8 rain days and 94mm of rain. Sun hours reach 10, and the score rises to 5.6, an acceptable time to visit. Expect a mix of sunny days and showers as the season turns.
17°C / 8°C · 17 rain days · 10.2 h sun
Highs reach 16.9°C with lows of 7.7°C, though May is the wettest month with 17 rain days and 142mm of rain. Sun hours hit 10.2 and the score climbs to 6.7, a good month overall. Ascension Day falls on 14 May 2026, a public holiday.
22°C / 13°C · 16 rain days · 11.7 h sun
Highs jump to 22.1°C with lows of 12.5°C. Rain is still frequent at 15.9 days and 135mm, but sun hours rise to 11.7. The score reaches 7.1, a good month for warm, long days in the mountains and lowlands alike.
24°C / 14°C · 15 rain days · 12.5 h sun
July is the warmest month, with a 24.4°C high and 14.4°C low. Rain days drop to 14.5 with 115mm, and sun hours peak at 12.5. The score of 7.2 makes this a good time for hiking and lake swimming.
24°C / 14°C · 13 rain days · 10.9 h sun
Highs stay warm at 24.1°C with lows of 14.1°C. Rain days fall to 12.6 with 111mm of rain, and sun hours are 10.9. The score of 7.5 marks this as the best month of the year. Swiss National Day falls on 1 August 2026, with celebrations across the country.
19°C / 10°C · 11 rain days · 9.7 h sun
Highs ease to 19.4°C with lows of 10.2°C. Rain days drop further to 11, the lowest of the year, with 88mm of rain and 9.7 sun hours. The score of 7.8 makes September the single best month to visit, with mild days and clearer skies.
15°C / 6°C · 12 rain days · 7.5 h sun
Highs fall to 14.7°C with lows of 6.1°C. Rain days rise slightly to 11.8 with 96mm of rain, and sun hours drop to 7.5. The score of 6.1 keeps this a good month, with autumn colours in the valleys and cooler mountain air.
8°C / 1°C · 13 rain days · 5.6 h sun
Highs drop to 8.3°C with lows near 1.2°C, and rain returns to 12.9 days with 100mm. Sun hours fall sharply to 5.6, and the score drops to 2.1. Grey, damp weather is common in the lowlands as winter approaches.
5°C / -1°C · 14 rain days · 5.0 h sun
Highs reach only 5.4°C with lows of -1.4°C, rain or snow falls on 13.5 days, and sun hours are just 5. The score of 1.5 reflects the cold, dark conditions, though snow cover makes it a popular month for skiing. Christmas Day falls on 25 December.
By trip type
City sightseeing
August and September bring highs of 24.1°C and 19.4°C in Bern with fewer rain days than midsummer, around 12.6 and 11 respectively. That makes sightseeing and walking around cities more comfortable than the wetter months of May or June.
Hiking & nature
September and October see rain days drop to 11 and 11.8, with 9.7 and 7.5 hours of sun daily. Cooler highs of 19.4°C and 14.7°C make for easier walking on trails than the heat of July or August.
Events calendar
Keep planning
FAQ
Yes. August scores 7.5 out of 10, one of the top two months. Bern highs reach 24.1°C and lows stay near 14.1°C, with 10.9 hours of sun a day. Rain still falls on about 12.6 days, so pack a light jacket, but the warmth and long days make it one of the best times to go.
Yes, September is the top-rated month with a score of 7.8. Daytime highs average 19.4°C and lows 10.2°C, cooler than summer but still comfortable. Rain days drop to about 11, the lowest of the year, and sun hours sit at 9.7, giving drier, clearer conditions than most of the year.
No, January scores only 1.3, the lowest of the year. Bern's high is just 4.1°C and the low drops to -2.7°C, with 14.3 rain or snow days and only 5.2 hours of sun. It's cold and often grey, though it suits travellers who want snow or winter scenery rather than mild weather.
The fact pack doesn't give a specific day count, but with best months like August and September both scoring above 7.5, planning a trip of at least a week lets you combine reliable warmth, around 10 to 11 sun hours daily, and fewer rain days than spring or winter.
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