Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
A shift in Somero's weather is observed as August turns into September, with the average high temperature reducing from an agreeable 20.3°C (68.5°F) to a moderate 14.9°C (58.8°F). Somero's temperature tends to fall to an average low of 7.6°C (45.7°F) during the nights of September.Humidity
In Somero, the average relative humidity in September is 83%.Rainfall
In Somero, during September, the rain falls for 12.7 days and regularly aggregates up to 30mm (1.18") of precipitation. In Somero, Finland, during the entire year, the rain falls for 128.2 days and collects up to 406mm (15.98") of precipitation.Snowfall
June through September are months without snowfall in Somero.Daylight
In September, the average length of the day is 12h and 53min.On the first day of September, sunrise is at 06:20 and sunset at 20:30. On the last day of the month, sunrise is at 07:30 and sunset at 19:00 EEST.
Sunshine
In September, the average sunshine is 7h.UV index
In Somero, 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 average person.Note: The maximum UV index, 3 during September, leads to the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. Avoiding the Sun during its peak radiation time around midday is a healthy practice. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Somero in September?
What is the average humidity in September in Somero?
How much does it rain in Somero in September?
When it does not snow in Somero?
Does it snow in Somero in September?
What is the average length of the day in September in Somero?
When is the sunrise / sunset in September in Somero?
How long on average sun shines in September in Somero?
What is the UV index reading in September in Somero?
Average temperature in September
Somero, Finland
- Average high temperature in September: 14.9°C
The warmest month (with the highest average high temperature) is July (21.5°C).
The month with the lowest average high temperature is January (-4°C).
- Average low temperature in September: 7.6°C
The month with the highest average low temperature is July (12.2°C).
The coldest month (with the lowest average low temperature) is January (-8.1°C).
Average pressure in September
Somero, Finland
- Average pressure in September: 1013.2mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1007.8mbar).
Average wind speed in September
Somero, Finland
- Average wind speed in September: 11.5km/h
The windiest month (with the highest average wind speed) is December (14.2km/h).
The calmest month (with the lowest average wind speed) is August (10.8km/h).
Average humidity in September
Somero, Finland
- Average humidity in September: 83%
The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is May (68%).
Average rainfall in September
Somero, Finland
- Average rainfall in September: 30mm
The wettest month (with the highest rainfall) is July (54mm).
The driest month (with the least rainfall) is April (24mm).
Average rainfall days in September
Somero, Finland
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in September
Somero, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is February (165mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Somero, Finland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (18 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Somero, Finland
- Average daylight in September: 12h and 5min
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: 7h and 0min
The month with the most sunshine is June (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 1h and 42min).
Average sunshine days in September
Somero, Finland
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is May (15.1 days).
The month with the least sunshine days is February (9.6 days).
Average UV index in September
Somero, Finland
- Average UV index in September: 3
The months with the highest UV index are June and 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
Somero, Finland
- Average cloud cover in September: 53
The month with the most cloud cover is February (Cloud cover 77).
The month with the least cloud cover is August (Cloud cover 42).
Average visibility in September
Somero, Finland
- Average visibility in September: 8km
The months with the highest visibility are May, June, July and August (9km).
The month with the lowest visibility is February (6km).
