September weather forecastPurmo, Finland
September
Weather in September
The first month of the autumn, September, is still a mild month in Purmo, Finland, with an average temperature varying between 13.5°C (56.3°F) and 8.6°C (47.5°F).Temperature
September's arrival signals a moderate reduction in the average high-temperature, easing from an enjoyable 18.2°C (64.8°F) in August to a still refreshing 13.5°C (56.3°F). Night temperatures in September exhibit a subtle decrease, settling at an average of 8.6°C (47.5°F).Humidity
In September, the average relative humidity is 81%.Rainfall
The months with the least rainfall are April and September Rain falls for 11.8 days and accumulates 23mm (0.91") of rain.Snowfall
In Purmo, snow does not fall in June through September.Daylight
The average length of the day in September is 13h and 0min.On the first day of September, sunrise is at 06:14 and sunset at 20:41. On the last day of the month, sunrise is at 07:35 and sunset at 19:00 EEST.
Sunshine
The average sunshine in September is 7.2h.UV index
In September, the average daily maximum UV index in Purmo is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 3 during September translates into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Purmo, Finland
- Average high temperature in September: 13.5°C
The warmest month (with the highest average high temperature) is July (19.4°C).
The month with the lowest average high temperature is January (-4.2°C).
- Average low temperature in September: 8.6°C
The month with the highest average low temperature is July (12.6°C).
The coldest months (with the lowest average low temperature) are January and February (-7.6°C).
Average pressure in September
Purmo, Finland
- Average pressure in September: 1011.7mbar
The month with the highest atmospheric pressure is May (1014.2mbar).
The month with the lowest atmospheric pressure is December (1005.6mbar).
Average wind speed in September
Purmo, Finland
- Average wind speed in September: 14.3km/h
The windiest month (with the highest average wind speed) is December (16.3km/h).
The calmest month (with the lowest average wind speed) is July (11.7km/h).
Average humidity in September
Purmo, Finland
- Average humidity in September: 81%
The month with the highest relative humidity is February (93%).
The month with the lowest relative humidity is June (70%).
Average rainfall in September
Purmo, Finland
- Average rainfall in September: 23mm
The wettest month (with the highest rainfall) is July (42mm).
The driest months (with the least rainfall) are April and September (23mm).
Average rainfall days in September
Purmo, Finland
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is August (14.7 days).
The month with the least rainy days is February (5.4 days).
Average snowfall in September
Purmo, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is February (185mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Purmo, Finland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (21 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Purmo, Finland
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 20h and 24min).
The month with the shortest days is December (Average daylight: 4h and 42min).
- Average sunshine in September: 7h and 12min
The month with the most sunshine is June (Average sunshine: 12h and 42min).
The month with the least sunshine is December (Average sunshine: 1h and 12min).
Average sunshine days in September
Purmo, Finland
- Average sunshine days in September: 15.9 days
The months with the most sunshine days are May and June (17.3 days).
The month with the least sunshine days is December (6.5 days).
Average UV index in September
Purmo, 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
Purmo, Finland
- Average cloud cover in September: 50
The months with the most cloud cover are January and February (Cloud cover 73).
The month with the least cloud cover is June (Cloud cover 39).
Average visibility in September
Purmo, 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 (7km).
