Sion Weather in September
Sion in September
The short of it: Sion in September averages a high of 32 °C (90 °F) and a low of 20 °C (68 °F), with 124 mm (4.9 in) of rain and about 12 h 4 min of daylight. Rated 2 of 5 for a visit; the best months are June and July. Source: TerraClimate climate normals, 1991–2020.
Average high 32° · low 20° · rain 124 mm · daylight 12 h 4 min
✦✦ Travel with care for a visit · best months: June & July
September in Sion brings afternoons near 32° and nights around 20°, with about 124 mm of rain over the month. The height of summer in Sion, with afternoons near 32°. Wet spells are common — about 124 mm, the 9th wettest month.
The sun is up for about 12 h 4 min in mid-September.
For the traveller: pack linen, a wide hat and water, and an oilskin besides. The Almanac rates September 2 of 5 for a visit; the finest months here are June and July.
Against its neighbours, Sion runs cooler than most and wetter than most in September. Pólvora, 30 km to the SSE, is 1° cooler by day.
September in Sion, by the numbers
- Warmth rank
- 1st warmest of 12
- Rain rank
- 9th wettest of 12
- Versus August
- about the same, 20 mm more rain
- Versus October
- about the same
- Day–night spread
- 12°
- Snow season
- seldom any
- Daylight, mid-month
- 12 h 4 min
- Average wind
- 5 km/h
Neighbouring Towns
September averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| PólvoraSan Martín Department | 30 km SSE | 32° | 19° | 137 mm |
| HuicungoSan Martín Department | 39 km N | 34° | 21° | 83 mm |
| Costa RicaSan Martín Department | 46 km NNE | 34° | 21° | 82 mm |
| JuanjuíSan Martín Department | 55 km N | 34° | 21° | 77 mm |
| PajarilloSan Martín Department | 55 km NNE | 34° | 21° | 77 mm |
| La VictoriaSan Martín Department | 59 km N | 34° | 21° | 76 mm |
| Dos de MayoSan Martín Department | 61 km NNW | 32° | 20° | 67 mm |
| LedoySan Martín Department | 62 km NNE | 34° | 21° | 78 mm |