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
September shows a mild decline in the average high-temperature, falling from August's pleasant 20.4°C (68.7°F) to a refreshing 14.6°C (58.3°F). Sahalahti's nighttime temperature during September is consistently averaged at a frosty 7.5°C (45.5°F).Humidity
In September, the average relative humidity in Sahalahti is 82%.Rainfall
In Sahalahti, in September, during 11.4 rainfall days, 17mm (0.67") of precipitation is typically accumulated. Throughout the year, there are 114.5 rainfall days, and 256mm (10.08") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Sahalahti, Finland.Daylight
In Sahalahti, the average length of the day in September is 12h and 55min.On the first day of the month, sunrise is at 06:15 and sunset at 20:30. On the last day of September, in Sahalahti, sunrise is at 07:28 and sunset at 18:56 EEST.
Sunshine
The average sunshine in September in Sahalahti is 6.7h.UV index
In September, the average daily maximum UV index in Sahalahti is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: In September, a regular UV index of 3 translates into these guidelines:
Act with care - The need to guard against sun damage is communicated. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Sahalahti?
What is the average humidity in September in Sahalahti?
How many days does it rain in September in Sahalahti?
When it does not snow in Sahalahti?
Does it snow in Sahalahti in September?
What is the average length of the day in September in Sahalahti?
When is the sunrise / sunset in September in Sahalahti?
How many hours of sunshine does Sahalahti have in September?
What is the UV index intensity in September in Sahalahti?
Average temperature in September
Sahalahti, Finland
- Average high temperature in September: 14.6°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 (-4.3°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 (-8.4°C).
Average pressure in September
Sahalahti, Finland
- Average pressure in September: 1013mbar
The month with the highest atmospheric pressure is May (1014.7mbar).
The month with the lowest atmospheric pressure is December (1007.5mbar).
Average wind speed in September
Sahalahti, Finland
- Average wind speed in September: 10.9km/h
The windiest month (with the highest average wind speed) is December (12.6km/h).
The calmest month (with the lowest average wind speed) is July (10km/h).
Average humidity in September
Sahalahti, Finland
- Average humidity in September: 82%
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is May (66%).
Average rainfall in September
Sahalahti, Finland
- Average rainfall in September: 17mm
The wettest month (with the highest rainfall) is July (37mm).
The driest months (with the least rainfall) are March and April (16mm).
Average rainfall days in September
Sahalahti, Finland
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is February (3 days).
Average snowfall in September
Sahalahti, Finland
- Average snowfall in September: 0mm
The months with the highest snowfall are January, February and March (86mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Sahalahti, Finland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is March (17.8 days).
The months with the least snowfall days are July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sahalahti, Finland
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 19h and 18min).
The month with the shortest days is December (Average daylight: 5h and 30min).
- Average sunshine in September: 6h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 1h and 36min).
Average sunshine days in September
Sahalahti, Finland
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is October (17.1 days).
The month with the least sunshine days is February (10.4 days).
Average UV index in September
Sahalahti, 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
Sahalahti, Finland
- Average cloud cover in September: 56
The month with the most cloud cover is February (Cloud cover 79).
The months with the least cloud cover are July and August (Cloud cover 44).
Average visibility in September
Sahalahti, Finland
- Average visibility in September: 8km
The months with the highest visibility are May, June, July and August (9km).
The months with the lowest visibility are January, February and March (6km).
