September weather forecastPernoo, Finland
September
Weather in September
The first month of the autumn, September, is still a mild month in Pernoo, Finland, with an average temperature ranging between min 11.2°C (52.2°F) and max 14.8°C (58.6°F).Temperature
A subtle shift in Pernoo's weather is observed as August turns into September, with the average high temperature reducing from an enjoyable 19.2°C (66.6°F) to a moderate 14.8°C (58.6°F). The temperature in Pernoo during September sees a subtle transition from day to night, averaging a low of 11.2°C (52.2°F).Humidity
In Pernoo, Finland, the average relative humidity in September is 79%.Rainfall
In Pernoo, during September, the rain falls for 16.4 days and regularly aggregates up to 53mm (2.09") of precipitation. Throughout the year, in Pernoo, there are 158.3 rainfall days, and 571mm (22.48") of precipitation is accumulated.Snowfall
In Pernoo, Finland, snow does not fall in June through September.Daylight
In September, the average length of the day in Pernoo is 12h and 53min.On the first day of the month, sunrise is at 06:07 and sunset at 20:17. On the last day of September, in Pernoo, sunrise is at 07:17 and sunset at 18:47 EEST.
Sunshine
In September, the average sunshine is 7.3h.UV index
The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A daily high UV index of 3 in September leads to these guidelines:
Take necessary precautions - Suggestions to elude sunburn are provided. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Pernoo, Finland
- Average high temperature in September: 14.8°C
The warmest month (with the highest average high temperature) is July (19.7°C).
The month with the lowest average high temperature is February (-2.7°C).
- Average low temperature in September: 11.2°C
The month with the highest average low temperature is July (15.1°C).
The coldest month (with the lowest average low temperature) is February (-6.3°C).
Average pressure in September
Pernoo, Finland
- Average pressure in September: 1013.4mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1008.9mbar).
Average wind speed in September
Pernoo, Finland
- Average wind speed in September: 19.3km/h
The windiest month (with the highest average wind speed) is December (23.7km/h).
The calmest month (with the lowest average wind speed) is July (15.5km/h).
Average humidity in September
Pernoo, Finland
- Average humidity in September: 79%
The month with the highest relative humidity is February (92%).
The month with the lowest relative humidity is May (73%).
Average rainfall in September
Pernoo, Finland
- Average rainfall in September: 53mm
The wettest month (with the highest rainfall) is August (67mm).
The driest month (with the least rainfall) is April (29mm).
Average rainfall days in September
Pernoo, Finland
- Average rainfall days in September: 16.4 days
The month with the highest number of rainy days is October (17.6 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in September
Pernoo, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (148mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Pernoo, Finland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Pernoo, Finland
- Average daylight in September: 12h and 54min
The month with the longest days is June (Average daylight: 18h and 54min).
The month with the shortest days is December (Average daylight: 5h and 54min).
- Average sunshine in September: 7h and 18min
The month with the most sunshine is June (Average sunshine: 12h and 30min).
The month with the least sunshine is December (Average sunshine: 1h and 36min).
Average sunshine days in September
Pernoo, Finland
- Average sunshine days in September: 9.5 days
The month with the most sunshine days is May (15.2 days).
The month with the least sunshine days is December (6.4 days).
Average UV index in September
Pernoo, 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
Pernoo, Finland
- Average cloud cover in September: 48
The months with the most cloud cover are January and December (Cloud cover 77).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in September
Pernoo, Finland
- Average visibility in September: 10km
The months with the highest visibility are May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March and December (8km).
