Vestmanna Weather in September
What's the weather like in Vestmanna (Streymoy) in September 2025?
The climate in Vestmanna during September can be summarized as cool and wet.
September is in the fall / autumn in Vestmanna and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a cool 11°C (51°F), whilst at night 7°C (44°F) is normal.
| Daytime temperature | 10.6°C 51°F |
|---|---|
| Nightly temperature | 6.5°C 43.6°F |
| Average temperature | 8.5°C 47.3°F |
| Daily sunshine | 3.1 hrs |
| Avg rainfall | 158 mm 6.2 ins |
| Rainy days | 23 days |
| Sea temperature | 10.2°C 50.3°F |
| Humidity | 90% |
| Windspeed | 20.9kph 13 mph |
On average September is the 5th wettest month of the year in Vestmanna with around 158mm 6.2 inches of rain making it a wet time to visit. This rainfall is typically spread over 23 days, although this may vary considerably.
On the flip side this corresponds to an average of 3.1 hours of sunshine per day.
September temperatures in Vestmanna
September rainfall
September hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Vestmanna in September 2025.
Other monthly averages
Best places to visit in September
Vestmanna weather stats
| Hottest month: | August | 12°C 53.6°F |
|---|---|---|
| Driest month: | June | 76mm 3ins |
| Sunniest month: | April | 4.1hrs |
| Coldest month: | January | 4.6°C 40.3°F |
| Wettest month: | October | 193mm 7.6ins |
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