Arnö Weather in September
Arnö in September
The short of it: Arnö in September averages a high of 16 °C (60 °F) and a low of 8 °C (46 °F), with 49 mm (1.9 in) of rain and about 12 h 44 min of daylight. Rated 3 of 5 for a visit; the best months are August and June. Source: TerraClimate climate normals, 1991–2020.
Average high 16° · low 8° · rain 49 mm · daylight 12 h 44 min
✦✦✦ Fair for a visit · best months: August & June
September in Arnö brings afternoons near 16° and nights around 8°, with about 49 mm of rain over the month. Highs fall 5° against August, to near 16°; nights run about 8°. Rain is modest, about 49 mm, the 7th wettest month.
The sun is up for about 12 h 44 min in mid-September, 173 minutes less than a month before.
For the traveller: pack layers, a wool coat and stout boots. The Almanac rates September 3 of 5 for a visit; the finest months here are August and June.
Against its neighbours, Arnö runs cooler than most and drier than most in September. Hallstavik, 8 km to the SSW, sees much the same highs.
September in Arnö, by the numbers
- Warmth rank
- 4th warmest of 12
- Rain rank
- 7th wettest of 12
- Versus August
- 5° colder, 20 mm less rain
- Versus October
- 6° warmer
- Day–night spread
- 8°
- Snow season
- Nov–Mar
- Daylight, mid-month
- 12 h 44 min
- Average wind
- 18 km/h