The Eiger, Monch and Jungfrau above a pair of lakes — Switzerland's most photographed mountain valley. Daytime highs in the Bernese Oberland run from about -5 °C in January to 15 °C in July, an annual range of roughly 20 °C.
Measured against a snow trip, the conditions hold up November to March. January is the most consistent single month: highs near -5 °C, nights around -12 °C, and roughly 139 mm of precipitation across the month.
What rules months out here is temperature and snow cover, not any composite judgement. May is the weakest month on these criteria.
Visitor numbers follow their own curve. Recorded overnight stays peak in the two weeks from 2 July at about 1.7 times an average fortnight for this region, against 0.5 times in November. January is the useful case: it is the most consistent month on the weather and still sits at 0.7 times average on occupancy. On the separate question of how much tourism the area carries all year, Interlaken sits in the 110th densest of 294 European regions, at 5.9 overnight stays per resident a year.
April sits just outside the window, with part of the month working and part not. These are usually the interesting weeks: conditions are close to the peak-season answer while prices and crowds are not. On recorded overnight stays that holds: April runs about 57% below the July peak. The map lets you check them fortnight by fortnight rather than trusting a monthly average.
What the Bernese Oberland is known for
- The Jungfraujoch railway reaches 3,454 m, the highest station in Europe
- The Aletsch Glacier is the largest in the Alps and a UNESCO site
- Lauterbrunnen valley has 72 waterfalls, including Staubbach falling 300 m
- Wengen and Murren are car-free and reached only by train or cable car
Month by month
| Month | High °C | Low °C | Precip mm | Wet days |
|---|---|---|---|---|
| January | -5 | -12 | 139 | 14.7 |
| February | -3 | -11 | 116 | 13.2 |
| March | 0 | -8 | 126 | 15.3 |
| April | 4 | -4 | 137 | 16.0 |
| May | 8 | -0 | 172 | 20.2 |
| June | 12 | 4 | 196 | 21.1 |
| July | 15 | 6 | 212 | 21.6 |
| August | 15 | 6 | 189 | 19.6 |
| September | 12 | 3 | 153 | 16.3 |
| October | 7 | -1 | 143 | 14.3 |
| November | 1 | -6 | 141 | 15.2 |
| December | -4 | -10 | 154 | 15.7 |
Ticked rows are months where every hard requirement for a snow trip is met across at least half the month.
Open Bernese Oberland on the map →
Nearby regions
Figures are 30-year climatology sampled at Interlaken, Grindelwald, Wengen, Lauterbrunnen and Murren, averaged across those locations, from ERA5-Land reanalysis fitted with a harmonic seasonal cycle and a trend term, evaluated for 2026. Sampling named towns rather than averaging the whole region avoids blending valley and mountain conditions into a figure true of neither. Cells are about 0.08° wide, from ERA5-Land's 0.1° grid, which is itself driven by a 0.25° (~28 km) atmospheric reanalysis — so individual valleys, sheltered bays and single summits are not resolved. In steep terrain read these as conditions for the wider area rather than for one village. They describe typical conditions, not a forecast. Read how the climatology is built.