A high alpine valley at 1,800 m with a dry, sunny microclimate unusual for Switzerland. Daytime highs in the Engadin run from about -7 °C in January to 13 °C in July, an annual range of roughly 21 °C.
Measured against a snow trip, the conditions hold up November to April. January is the most consistent single month: highs near -7 °C, nights around -16 °C, and roughly 73 mm of precipitation across the month.
The binding constraint here is temperature and snow cover — that is what rules months out, not any composite judgement. May is the weakest month on these criteria.
What the Engadin is known for
- St Moritz hosted the Winter Olympics twice, in 1928 and 1948
- The Bernina Express railway over the pass is a UNESCO World Heritage site
- The Engadin sits in a rain shadow and averages more sun than most of the Alps
- Swiss National Park, the country's only one, is at Zernez and allows no camping or off-trail walking
- Larch forests turn gold in October, briefly and spectacularly
Month by month
| Month | High °C | Low °C | Precip mm | Wet days |
|---|---|---|---|---|
| January | -7 | -16 | 73 | 12.7 |
| February | -5 | -14 | 63 | 11.7 |
| March | -2 | -11 | 83 | 13.4 |
| April | 1 | -7 | 104 | 15.6 |
| May | 6 | -2 | 137 | 20.7 |
| June | 11 | 2 | 153 | 20.6 |
| July | 13 | 4 | 154 | 20.5 |
| August | 13 | 4 | 133 | 18.3 |
| September | 10 | 1 | 118 | 14.9 |
| October | 5 | -4 | 125 | 13.2 |
| November | -1 | -9 | 115 | 14.1 |
| December | -6 | -14 | 100 | 13.1 |
Ticked rows are months where every hard requirement for a snow trip is met across at least half the month.
By trip type
| Snow | November to April |
| Hiking | no month clears every limit |
Each row applies that trip type's own hard limits to the same climate data.
Open Engadin & St Moritz on the map →
Nearby regions
Figures are 30-year climatology sampled at St Moritz, Pontresina, Zuoz, Sils and Scuol, 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.