September weather forecastPetas, Finland
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Petas, Finland, with an average temperature ranging between min 9.8°C (49.6°F) and max 15.1°C (59.2°F).Temperature
As August transitions into September, Petas sees a drop in the average high-temperature, transitioning from a pleasant 20.3°C (68.5°F) to a refreshing 15.1°C (59.2°F). In September, the average low-temperature is a chilly 9.8°C (49.6°F).Humidity
In Petas, the average relative humidity in September is 80%.Rainfall
In Petas, in September, it is raining for 15.3 days, with typically 37mm (1.46") of accumulated precipitation. In Petas, during the entire year, the rain falls for 120 days and collects up to 353mm (13.9") of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Petas, Finland, the average length of the day in September is 12h and 53min.On the first day of September, sunrise is at 06:16 and sunset at 20:24. On the last day of the month, sunrise is at 07:25 and sunset at 18:55 EEST.
Sunshine
In Petas, the average sunshine in September is 7.5h.UV index
The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 3 in September translates into this advice:
Ensure safety - Recommendations to avert sunburn are presented. To guard against the harmful effects of the Sun, minimize exposure during midday. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Petas, Finland
- Average high temperature in September: 15.1°C
The warmest month (with the highest average high temperature) is July (21.3°C).
The month with the lowest average high temperature is January (-2.8°C).
- Average low temperature in September: 9.8°C
The month with the highest average low temperature is July (13.7°C).
The coldest month (with the lowest average low temperature) is January (-6.5°C).
Average pressure in September
Petas, Finland
- Average pressure in September: 1013.5mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1008.6mbar).
Average wind speed in September
Petas, Finland
- Average wind speed in September: 13.9km/h
The windiest month (with the highest average wind speed) is December (16.9km/h).
The calmest month (with the lowest average wind speed) is July (11.8km/h).
Average humidity in September
Petas, Finland
- Average humidity in September: 80%
The month with the highest relative humidity is February (92%).
The month with the lowest relative humidity is May (69%).
Average rainfall in September
Petas, Finland
- Average rainfall in September: 37mm
The wettest month (with the highest rainfall) is October (48mm).
The driest month (with the least rainfall) is May (15mm).
Average rainfall days in September
Petas, Finland
- Average rainfall days in September: 15.3 days
The months with the highest number of rainy days are July and August (15.5 days).
The month with the least rainy days is February (3 days).
Average snowfall in September
Petas, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (94mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Petas, Finland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Petas, Finland
- Average daylight in September: 12h and 54min
The month with the longest days is June (Average daylight: 18h and 48min).
The month with the shortest days is December (Average daylight: 5h and 54min).
- Average sunshine in September: 7h and 30min
The month with the most sunshine is June (Average sunshine: 12h and 24min).
The month with the least sunshine is December (Average sunshine: 1h and 54min).
Average sunshine days in September
Petas, Finland
- Average sunshine days in September: 11.9 days
The month with the most sunshine days is May (21.9 days).
The month with the least sunshine days is November (11.1 days).
Average UV index in September
Petas, 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
Petas, Finland
- Average cloud cover in September: 47
The months with the most cloud cover are February and December (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in September
Petas, 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 February and March (7km).
