Grimstad Weather in September
Grimstad in September
The short of it: Grimstad in September averages a high of 16 °C (61 °F) and a low of 9 °C (49 °F), with 123 mm (4.8 in) of rain and about 12 h 42 min of daylight. Rated 3 of 5 for a visit; the best months are July and August. Source: TerraClimate climate normals, 1991–2020.
Average high 16° · low 9° · rain 123 mm · daylight 12 h 42 min
✦✦✦ Fair for a visit · best months: July & August
Thirty years of records give Grimstad an average September high of 16°, a low of 9° and some 123 mm of rain. Much like August: highs about 16°, nights near 9°. A wool coat will serve you well. Wet spells are common — about 123 mm, the 3rd wettest month.
The sun is up for about 12 h 42 min in mid-September, 160 minutes less than a month before.
For the traveller: pack layers, a wool coat and stout boots, and an oilskin besides. The Almanac rates September 3 of 5 for a visit; the finest months here are July and August.
Against its neighbours, Grimstad runs warmer than most and about as wet in September. Fevik, 6 km to the NE, sees much the same highs.
September in Grimstad, by the numbers
- Warmth rank
- 4th warmest of 12
- Rain rank
- 3rd wettest of 12
- Versus August
- 4° colder, 17 mm more rain
- Versus October
- 5° warmer
- Day–night spread
- 7°
- Snow season
- Dec–Mar
- Daylight, mid-month
- 12 h 42 min
- Average wind
- 17 km/h