Kirkkonummi in September
6.4out of 10
Possible, with caveats
Cool: highs only around 14°C. Frequent rain: about 11 rainy days.
14°CAvg high
12°CAvg low
11Rainy days (68 mm)
12:31 hDaylight
07:01Sunrise · 19:32 Sunset
Why this score
- Cool: highs only around 14°C
- Frequent rain: about 11 rainy days
- Rain varies a lot between years (±4.4 days)
What to wear and pack
- Layers you can add or remove
- Rain jacket or compact umbrella
How reliable is the forecast?
Rain in September varies a lot between years (±4.4 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | -1°C | -4°C | 52 mm | 12 | – | – | 3.5 |
| February | -2°C | -6°C | 41 mm | 10 | – | – | 3.8 |
| March | 0°C | -4°C | 37 mm | 9 | – | – | 3.9 |
| April | 3°C | 1°C | 36 mm | 8 | – | – | 4.9 |
| May | 8°C | 6°C | 37 mm | 8 | – | – | 5.9 |
| June | 13°C | 10°C | 57 mm | 9 | – | – | 6.4 |
| July | 18°C | 16°C | 57 mm | 9 | – | – | 7.2 |
| August | 18°C | 16°C | 72 mm | 11 | – | – | 6.9 |
| September | 14°C | 12°C | 68 mm | 11 | – | – | 6.4 |
| October | 9°C | 7°C | 84 mm | 14 | – | – | 5.2 |
| November | 5°C | 3°C | 79 mm | 14 | – | – | 4.4 |
| December | 2°C | -1°C | 66 mm | 14 | – | – | 3.8 |
Frequently asked questions
How hot is Kirkkonummi in September?
Daytime highs average 14°C and nights about 12°C.
When is the best time to visit Kirkkonummi?
The best months are July, August.