Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Sion is from June, August, September, but considering flight prices and crowds, the best months to visit are May, August, September. — consistent weather climate
☀️Pleasant
| Score | 10 | 16 | 32 | 51 | 81 | 83 | 79 | 88 | 93 | 67 | 13 | 11 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Polar | Polar | Cold | Cold | Mild | Pleasant | Pleasant | Pleasant | Pleasant | Cold | Cold | Polar |
| Temperature | -6–2°C | -6–5°C | -2–10°C | 1–15°C | 7–21°C | 11–25°C | 15–32°C | 15–31°C | 10–26°C | 4–16°C | -2–6°C | -6–2°C |
| Feels like | -9–-1°C | -10–2°C | -5–7°C | -2–12°C | 5–19°C | 10–24°C | 15–31°C | 14–30°C | 9–24°C | 2–14°C | -5–3°C | -9–-1°C |
| Precipitation | 65mm 16 days | 29mm 10 days | 30mm 8 days | 34mm 8 days | 66mm 10 days | 53mm 10 days | 15mm 2 days | 25mm 4 days | 27mm 4 days | 43mm 8 days | 64mm 14 days | 65mm 14 days |
| Sunshine | 2.9h ☀︎ 33% | 6.1h ☀︎ 60% | 8.5h ☀︎ 71% | 10.3h ☀︎ 75% | 11.3h ☀︎ 74% | 12.9h ☀︎ 80% | 14.7h ☀︎ 94% | 12.6h ☀︎ 88% | 10.6h ☀︎ 84% | 8.2h ☀︎ 76% | 4.5h ☀︎ 49% | 3.3h ☀︎ 40% |
| Wind | SE · 7 km/h | SW · 8 km/h | SW · 9 km/h | SW · 12 km/h | SW · 11 km/h | SW · 11 km/h | SW · 12 km/h | SW · 11 km/h | SW · 9 km/h | SW · 8 km/h | S · 7 km/h | E · 6 km/h |
| Humidity (%) | 84% | 74% | 65% | 58% | 61% | 59% | 43% | 46% | 57% | 69% | 82% | 83% |
| Day length | 8.8h | 10.2h | 11.9h | 13.7h | 15.3h | 16.1h | 15.7h | 14.3h | 12.6h | 10.8h | 9.2h | 8.3h |
| Tourist Crowds | Low season | Low season | Low season | Low season | Shoulder season | High season | High season | High season | High season | Low season | Low season | Shoulder season |