Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September implies a soft temperature shift, with average high-temperatures reducing from August's enjoyable 17.7°C (63.9°F) to a mild 13.5°C (56.3°F). In Korsholm, September nights experience a modest descent in temperature from daily peaks, cooling down to an average of 10.1°C (50.2°F).Humidity
In September, the average relative humidity in Korsholm is 79%.Rainfall
In Korsholm, Finland, during September, the rain falls for 15.6 days and regularly aggregates up to 39mm (1.54") of precipitation. In Korsholm, Finland, during the entire year, the rain falls for 151.1 days and collects up to 508mm (20") of precipitation.Snowfall
June through September are months without snowfall in Korsholm.Daylight
In September, the average length of the day in Korsholm is 12h and 59min.On the first day of the month, sunrise is at 06:20 and sunset at 20:45. On the last day of September, in Korsholm, sunrise is at 07:39 and sunset at 19:06 EEST.
Sunshine
The average sunshine in September in Korsholm is 7.6h.UV index
The average daily maximum UV index in September in Korsholm is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: An average maximum UV index of 3 in September leads to these recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Frequently asked questions
What is the average September temperature in Korsholm?
What is the average humidity in September in Korsholm?
How much does it rain in Korsholm in September?
When it does not snow in Korsholm?
Does it snow in Korsholm in September?
What is the average length of the day in September in Korsholm?
What time are sunrise and sunset in September in Korsholm?
How long on average sun shines in September in Korsholm?
How high is the UV index in September in Korsholm?
Average temperature in September
Korsholm, Finland
- Average high temperature in September: 13.5°C
The warmest month (with the highest average high temperature) is July (17.8°C).
The month with the lowest average high temperature is February (-2.8°C).
- Average low temperature in September: 10.1°C
The month with the highest average low temperature is August (13.4°C).
The coldest month (with the lowest average low temperature) is February (-6.7°C).
Average pressure in September
Korsholm, Finland
- Average pressure in September: 1011.8mbar
The month with the highest atmospheric pressure is May (1014.3mbar).
The month with the lowest atmospheric pressure is December (1005.6mbar).
Average wind speed in September
Korsholm, Finland
- Average wind speed in September: 18km/h
The windiest month (with the highest average wind speed) is December (21.4km/h).
The calmest month (with the lowest average wind speed) is July (15km/h).
Average humidity in September
Korsholm, Finland
- Average humidity in September: 79%
The month with the highest relative humidity is February (91%).
The months with the lowest relative humidity are May and June (74%).
Average rainfall in September
Korsholm, Finland
- Average rainfall in September: 39mm
The wettest month (with the highest rainfall) is August (59mm).
The driest month (with the least rainfall) is April (29mm).
Average rainfall days in September
Korsholm, Finland
- Average rainfall days in September: 15.6 days
The month with the highest number of rainy days is August (17 days).
The month with the least rainy days is February (6 days).
Average snowfall in September
Korsholm, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is March (155mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Korsholm, Finland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Korsholm, Finland
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 20h and 12min).
The month with the shortest days is December (Average daylight: 4h and 54min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is June (Average sunshine: 12h and 42min).
The month with the least sunshine is December (Average sunshine: 1h and 24min).
Average sunshine days in September
Korsholm, Finland
- Average sunshine days in September: 11.1 days
The month with the most sunshine days is May (15.2 days).
The month with the least sunshine days is December (6.8 days).
Average UV index in September
Korsholm, Finland
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in September
Korsholm, Finland
- Average cloud cover in September: 47
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 38).
Average visibility in September
Korsholm, Finland
- Average visibility in September: 10km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February and March (8km).
Korsholm, Finland
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