September weather forecastTopeno, Finland
September
Weather in September
September, the first month of the autumn in Topeno, is still a mild month, with temperature in the range of an average low of 7.5°C (45.5°F) and an average high of 14.8°C (58.6°F).Temperature
The start of September involves a temperature drop, moving from an agreeable 20.7°C (69.3°F) in August to a moderate 14.8°C (58.6°F). In September, Topeno experiences an average nighttime temperature of 7.5°C (45.5°F).Humidity
In Topeno, the average relative humidity in September is 83%.Rainfall
In Topeno, Finland, in September, during 13.8 rainfall days, 31mm (1.22") of precipitation is typically accumulated. Throughout the year, there are 128.9 rainfall days, and 399mm (15.71") of precipitation is accumulated.Snowfall
In Topeno, snow does not fall in June through September.Daylight
In Topeno, the average length of the day in September is 12h and 53min.On the first day of the month, sunrise is at 06:17 and sunset at 20:28. On the last day of September, in Topeno, sunrise is at 07:27 and sunset at 18:57 EEST.
Sunshine
The average sunshine in September is 6.4h.UV index
In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The UV index of 3 during September leads to these advisories:
Take precautions - Protection against sunburn is recommended. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Topeno, Finland
- Average high temperature in September: 14.8°C
The warmest month (with the highest average high temperature) is July (21.8°C).
The month with the lowest average high temperature is January (-4.4°C).
- Average low temperature in September: 7.5°C
The month with the highest average low temperature is July (12.1°C).
The coldest month (with the lowest average low temperature) is January (-8.5°C).
Average pressure in September
Topeno, Finland
- Average pressure in September: 1013.2mbar
The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in September
Topeno, Finland
- Average wind speed in September: 10.3km/h
The windiest month (with the highest average wind speed) is December (12km/h).
The calmest month (with the lowest average wind speed) is August (9.6km/h).
Average humidity in September
Topeno, Finland
- Average humidity in September: 83%
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is May (66%).
Average rainfall in September
Topeno, Finland
- Average rainfall in September: 31mm
The wettest month (with the highest rainfall) is July (54mm).
The driest months (with the least rainfall) are March and April (25mm).
Average rainfall days in September
Topeno, Finland
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in September
Topeno, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (157mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Topeno, Finland
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (18.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Topeno, Finland
- Average daylight in September: 12h and 54min
The month with the longest days is June (Average daylight: 19h and 0min).
The month with the shortest days is December (Average daylight: 5h and 48min).
- Average sunshine in September: 6h and 24min
The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 1h and 30min).
Average sunshine days in September
Topeno, Finland
- Average sunshine days in September: 11.8 days
The month with the most sunshine days is May (15.9 days).
The month with the least sunshine days is March (9.4 days).
Average UV index in September
Topeno, 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
Topeno, Finland
- Average cloud cover in September: 59
The months with the most cloud cover are January and February (Cloud cover 80).
The months with the least cloud cover are May, June, July and August (Cloud cover 47).
Average visibility in September
Topeno, Finland
- Average visibility in September: 8km
The months with the highest visibility are May, June and July (9km).
The months with the lowest visibility are January and February (5km).
