When to go · Sion
Sion in May
Mixed month. Outside the best window (Jun–Sep). Across Switzerland: Lakes and cities green and quiet; many mountain lifts closed for maintenance.
Key facts
- Verdict
- Mixed
- Temperature
- 20°C (68°F)68°F (20°C) / 9°C (48°F)48°F (9°C)
- average high / low
- Rain days
- 12
- Crowds
- Low
- Switzerland overall
- Prices
- Low
- Switzerland overall
Verdict
Outside the best window (Jun–Sep). Across Switzerland: Lakes and cities green and quiet; many mountain lifts closed for maintenance.
Is another month better than May?
May is rated mixed. These months rate higher:
Weather in May
- SionHighs around 20 °C (68 °F), lows around 9 °C (48 °F), rain on about 12 daysHighs around 68 °F (20 °C), lows around 48 °F (9 °C), rain on about 12 days
Crowds and prices
- Crowds · Switzerland overall
- Low
- Prices · Switzerland overall
- Low
Switzerland overall: Lakes and cities green and quiet; many mountain lifts closed for maintenance.
Compare two months
Weather, crowds and prices for any two months in Sion, side by side.
Verdict
May: Mixed
Jun: Great (better)
Daytime high
May: 20 °C (68 °F)68 °F (20 °C)
Jun: 24 °C (75 °F)75 °F (24 °C)
Night low
May: 9 °C (48 °F)48 °F (9 °C)
Jun: 13 °C (55 °F)55 °F (13 °C)
Rain days
May: 12 (better)
Jun: 13
Crowds
May: Low
Jun: Medium
Prices
May: Low
Jun: Medium
Festivals listed
May: 0
Jun: 0
May: Outside the best window (Jun–Sep). Across Switzerland: Lakes and cities green and quiet; many mountain lifts closed for maintenance.
June: Inside Sion's best window: Jun–Sep.
Sion: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm layer for the evenings
- A rain jacket or umbrella and shoes that dry fast