Weather in ヘルシンキ in 9月
Climate normals based on 10 years of historical data for ヘルシンキ, フィンランド共和国.
Average high
15°C
Average low
11°C
Rainfall
74 mm
10 rainy days
Sunshine
3.0h/day
湿度
79%
How Hot Is ヘルシンキ in 9月?
The month-long average for ヘルシンキ in September is 13°C, ranging between 15°C highs and 11°C lows.
Sunshine Hours in 9月
Cloud cover keeps ヘルシンキ dim: 3.0h of sun, daylight from 6:50 am to 7:40 pm.
Does It Rain In ヘルシンキ In 9月?
Rain interrupts most days in ヘルシンキ: 74mm in 10 days.
Is ヘルシンキ Humid In 9月?
Tropical-style humidity defines ヘルシンキ's September: 79% on average, with constant mugginess.
Wind In ヘルシンキ In 9月
Expect a breezy September in ヘルシンキ — winds average 21 kph.
Cloud Cover In ヘルシンキ In 9月
Cloudy skies dominate ヘルシンキ in September — averaging 67% cloud cover.
Cities With Similar Weather In 9月
Weather in ヘルシンキ, month by month
| Month | High / Low | 雨 | |
|---|---|---|---|
| 1月の天気 | -1°C / -5°C | 68mm | Details → |
| 2月の天気 | -1°C / -5°C | 63mm | Details → |
| 3月の天気 | 2°C / -3°C | 49mm | Details → |
| 4月の天気 | 7°C / 1°C | 45mm | Details → |
| 5月の天気 | 13°C / 6°C | 49mm | Details → |
| 6月の天気 | 18°C / 12°C | 60mm | Details → |
| 7月の天気 | 20°C / 14°C | 86mm | Details → |
| 8月の天気 | 20°C / 14°C | 88mm | Details → |
| 9月の天気 | 15°C / 11°C | 74mm | |
| 10月の天気 | 9°C / 5°C | 82mm | Details → |
| 11月の天気 | 5°C / 2°C | 78mm | Details → |
| 12月の天気 | 1°C / -2°C | 67mm | Details → |