Oslo Weather in September
Oslo in September
The short of it: Oslo in September averages a high of 16 °C (61 °F) and a low of 9 °C (47 °F), with 78 mm (3.1 in) of rain and about 12 h 44 min of daylight. Rated 3 of 5 for a visit; the best months are May and April. Source: TerraClimate climate normals, 1991–2020.
Average high 16° · low 9° · rain 78 mm · daylight 12 h 44 min
✦✦✦ Fair for a visit · best months: May & April
Thirty years of records give Oslo an average September high of 16°, a low of 9° and some 78 mm of rain. The year turns hard here: highs drop 5° from August to about 16°, with nights near 9°. Wet spells are common — about 78 mm, the 5th wettest month.
The sun is up for about 12 h 44 min in mid-September, 172 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 May and April.
Against its neighbours, Oslo runs warmer than most and drier than most in September. Ensjø, 2 km to the E, sees much the same highs.
September in Oslo, by the numbers
- Warmth rank
- 5th warmest of 12
- Rain rank
- 5th wettest of 12
- Versus August
- 5° colder, 12 mm less rain
- Versus October
- 6° warmer
- Day–night spread
- 8°
- Snow season
- Nov–Mar
- Daylight, mid-month
- 12 h 44 min
- Average wind
- 12 km/h
Neighbouring Towns
September averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| EnsjøOslo | 2 km E | 16° | 8° | 78 mm |
| LysakerAkershus | 6 km W | 16° | 9° | 79 mm |
| NesoddtangenAkershus | 7 km SW | 16° | 9° | 79 mm |
| BillingstadAkershus | 15 km WSW | 16° | 8° | 88 mm |
| StrømmenAkershus | 15 km ENE | 15° | 7° | 89 mm |
| GreverudAkershus | 16 km SSE | 16° | 8° | 79 mm |
| SkuiAkershus | 17 km W | 15° | 7° | 86 mm |
| RotnesAkershus | 17 km NNE | 15° | 7° | 97 mm |