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
The start of September involves a temperature drop, moving from a comfortable 19.1°C (66.4°F) in August to a still refreshing 13.3°C (55.9°F). Throughout September, Reisjärvi's nights cool down to an average of 6.4°C (43.5°F).Humidity
In Reisjärvi, the average relative humidity in September is 84%.Rainfall
In Reisjärvi, Finland, in September, during 12.1 rainfall days, 28mm (1.1") of precipitation is typically accumulated. Throughout the year, in Reisjärvi, there are 118.8 rainfall days, and 391mm (15.39") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Reisjärvi, Finland.Daylight
In Reisjärvi, Finland, the average length of the day in September is 13h and 0min.On the first day of the month, sunrise is at 06:06 and sunset at 20:34. On the last day of September, in Reisjärvi, sunrise is at 07:27 and sunset at 18:52 EEST.
Sunshine
In September, the average sunshine is 6.2h.UV index
In Reisjärvi, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 3 during September translates into the following guidance:
Guard yourself - An obligation to protect skin and eyes from harm exists. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Frequently asked questions
What are the temperatures in Reisjärvi in September?
What is the average humidity in September in Reisjärvi?
How many days does it rain in September in Reisjärvi?
When it does not snow in Reisjärvi?
Does it snow in Reisjärvi in September?
What is the average length of the day in September in Reisjärvi?
What time are sunrise and sunset in September in Reisjärvi?
How long on average sun shines in September in Reisjärvi?
What is the UV index intensity in September in Reisjärvi?
Average temperature in September
Reisjärvi, Finland
- Average high temperature in September: 13.3°C
The warmest month (with the highest average high temperature) is July (21°C).
The month with the lowest average high temperature is January (-5.8°C).
- Average low temperature in September: 6.4°C
The month with the highest average low temperature is July (11.4°C).
The coldest month (with the lowest average low temperature) is January (-10°C).
Average pressure in September
Reisjärvi, Finland
- Average pressure in September: 1011.8mbar
The month with the highest atmospheric pressure is May (1014.2mbar).
The month with the lowest atmospheric pressure is December (1006mbar).
Average wind speed in September
Reisjärvi, Finland
- Average wind speed in September: 10.2km/h
The windiest month (with the highest average wind speed) is December (11.5km/h).
The calmest month (with the lowest average wind speed) is July (8.9km/h).
Average humidity in September
Reisjärvi, Finland
- Average humidity in September: 84%
The month with the highest relative humidity is January (96%).
The month with the lowest relative humidity is June (67%).
Average rainfall in September
Reisjärvi, Finland
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is July (49mm).
The driest month (with the least rainfall) is April (23mm).
Average rainfall days in September
Reisjärvi, Finland
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is July (15.5 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in September
Reisjärvi, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is December (200mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Reisjärvi, Finland
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (21.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Reisjärvi, Finland
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 20h and 30min).
The month with the shortest days is December (Average daylight: 4h and 42min).
- Average sunshine in September: 6h and 1min
The month with the most sunshine is June (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 0h and 54min).
Average sunshine days in September
Reisjärvi, Finland
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is May (17.2 days).
The month with the least sunshine days is December (8.5 days).
Average UV index in September
Reisjärvi, 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, March, November and December (UV index 1).
Average cloud cover in September
Reisjärvi, Finland
- Average cloud cover in September: 61
The month with the most cloud cover is January (Cloud cover 80).
The month with the least cloud cover is June (Cloud cover 47).
Average visibility in September
Reisjärvi, Finland
- Average visibility in September: 7km
The months with the highest visibility are May, June and July (9km).
The months with the lowest visibility are January and February (5km).
Reisjärvi, Finland
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