September weather forecastNämpnäs, Finland
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Nämpnäs, Finland, with temperature in the range of an average low of 11.2°C (52.2°F) and an average high of 13.4°C (56.1°F).Temperature
September signifies a gentle decline in Nämpnäs's average high-temperature, easing from a comfortable 16.8°C (62.2°F) in August to a moderate 13.4°C (56.1°F). With a barely noticeable fluctuation in temperature, Nämpnäs reaches an average low of 11.2°C (52.2°F) during the September nights.Humidity
In September, the average relative humidity is 79%.Rainfall
In Nämpnäs, in September, it is raining for 13.5 days, with typically 28mm (1.1") of accumulated precipitation. Throughout the year, in Nämpnäs, there are 113.1 rainfall days, and 265mm (10.43") of precipitation is accumulated.Snowfall
In Nämpnäs, snow does not fall in June through September.Daylight
In Nämpnäs, the average length of the day in September is 12h and 57min.On the first day of the month, sunrise is at 06:24 and sunset at 20:45. On the last day of September, sunrise is at 07:41 and sunset at 19:08 EEST.
Sunshine
In September, the average sunshine is 7.6h.UV index
In Nämpnäs, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 3 suggests this advice:
Be vigilant - Preventing sunburn is recommended. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Nämpnäs, Finland
- Average high temperature in September: 13.4°C
The warmest month (with the highest average high temperature) is August (16.8°C).
The month with the lowest average high temperature is February (-2.6°C).
- Average low temperature in September: 11.2°C
The month with the highest average low temperature is August (14.4°C).
The coldest month (with the lowest average low temperature) is February (-5.6°C).
Average pressure in September
Nämpnäs, Finland
- Average pressure in September: 1011.6mbar
The month with the highest atmospheric pressure is May (1014.3mbar).
The month with the lowest atmospheric pressure is December (1005.7mbar).
Average wind speed in September
Nämpnäs, Finland
- Average wind speed in September: 22km/h
The windiest month (with the highest average wind speed) is December (26.3km/h).
The calmest month (with the lowest average wind speed) is July (17.7km/h).
Average humidity in September
Nämpnäs, Finland
- Average humidity in September: 79%
The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is May (77%).
Average rainfall in September
Nämpnäs, Finland
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is July (35mm).
The driest month (with the least rainfall) is April (15mm).
Average rainfall days in September
Nämpnäs, Finland
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is August (13.9 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in September
Nämpnäs, Finland
- Average snowfall in September: 0mm
The months with the highest snowfall are January and March (53mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Nämpnäs, Finland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Nämpnäs, Finland
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 19h and 48min).
The month with the shortest days is December (Average daylight: 5h and 6min).
- Average sunshine in September: 7h and 36min
The month with the most sunshine is June (Average sunshine: 12h and 48min).
The month with the least sunshine is December (Average sunshine: 1h and 30min).
Average sunshine days in September
Nämpnäs, Finland
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is May (18.5 days).
The month with the least sunshine days is December (12.6 days).
Average UV index in September
Nämpnäs, 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
Nämpnäs, Finland
- Average cloud cover in September: 46
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in September
Nämpnäs, Finland
- Average visibility in September: 10km
The months with the highest visibility are May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April, November and December (9km).
