September weather forecastRantsila, Finland
September
Weather in September
September, the first month of the autumn in Rantsila, is still a mild month, with an average temperature varying between 7.7°C (45.9°F) and 13°C (55.4°F).Temperature
Stepping into September, Rantsila observes a temperature decline, with the average high falling from August's comfortable 18°C (64.4°F) to a still refreshing 13°C (55.4°F). During the month of September, an average low-temperature of 7.7°C (45.9°F) is recorded.Humidity
In Rantsila, the average relative humidity in September is 82%.Rainfall
The months with the least rainfall in Rantsila are April and September Rain falls for 12.5 days and accumulates 25mm (0.98") of rain.Snowfall
Months with snowfall in Rantsila are January through May, September through December. September is the first month it typically snows in Rantsila. Throughout September, in the average 0.2 snowfall days, it receives 2mm (0.08") of snow. In Rantsila, during the entire year, snow falls for 107.1 days and aggregates up to 1131mm (44.53") of snow.Daylight
In September, the average length of the day is 13h and 2min.On the first day of September, sunrise is at 06:00 and sunset at 20:34. On the last day of the month, sunrise is at 07:25 and sunset at 18:49 EEST.
Sunshine
In Rantsila, the average sunshine in September is 6.7h.UV index
In Rantsila, Finland, 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 maximum daily UV index, 3 in September, converts into the following recommendations:
Take precautions - Protection against sun damage is advised. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Rantsila, Finland
- Average high temperature in September: 13°C
The warmest month (with the highest average high temperature) is July (20°C).
The month with the lowest average high temperature is January (-6.1°C).
- Average low temperature in September: 7.7°C
The month with the highest average low temperature is July (12.4°C).
The coldest month (with the lowest average low temperature) is January (-10.6°C).
Average pressure in September
Rantsila, Finland
- Average pressure in September: 1011.4mbar
The month with the highest atmospheric pressure is May (1014mbar).
The month with the lowest atmospheric pressure is December (1005.4mbar).
Average wind speed in September
Rantsila, Finland
- Average wind speed in September: 12.8km/h
The windiest month (with the highest average wind speed) is November (13.7km/h).
The calmest month (with the lowest average wind speed) is July (10.6km/h).
Average humidity in September
Rantsila, Finland
- Average humidity in September: 82%
The months with the highest relative humidity are January and February (95%).
The month with the lowest relative humidity is June (69%).
Average rainfall in September
Rantsila, Finland
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is July (59mm).
The driest months (with the least rainfall) are April and September (25mm).
Average rainfall days in September
Rantsila, Finland
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in September
Rantsila, Finland
- Average snowfall in September: 2mm
The month with the highest snowfall is March (232mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in September
Rantsila, Finland
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is January (21.4 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Rantsila, Finland
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 21h and 12min).
The month with the shortest days is December (Average daylight: 4h and 12min).
- Average sunshine in September: 6h and 42min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 1h and 0min).
Average sunshine days in September
Rantsila, Finland
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is June (17 days).
The month with the least sunshine days is December (7.4 days).
Average UV index in September
Rantsila, 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
Rantsila, Finland
- Average cloud cover in September: 55
The month with the most cloud cover is February (Cloud cover 77).
The month with the least cloud cover is July (Cloud cover 43).
Average visibility in September
Rantsila, Finland
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February and March (6km).
