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
With the onset of September, Porkala's climate undergoes a slight change as the average high-temperature moves from a refreshing 19.2°C (66.6°F) in August to a moderate 15.1°C (59.2°F). Porkala navigates through September with a barely noticeable decrease in temperature at night, stabilizing at a cool 11.7°C (53.1°F).Humidity
In Porkala, Finland, the average relative humidity in September is 79%.Rainfall
In September, the rain falls for 16.9 days. Throughout September, 56mm (2.2") of precipitation is accumulated. In Porkala, Finland, during the entire year, the rain falls for 165.8 days and collects up to 570mm (22.44") of precipitation.Snowfall
In Porkala, snow does not fall in June through September.Daylight
In Porkala, the average length of the day in September is 12h and 52min.On the first day of September in Porkala, sunrise is at 06:18 and sunset at 20:25. On the last day of the month, sunrise is at 07:26 and sunset at 18:57 EEST.
Sunshine
In September, the average sunshine in Porkala is 7.5h.UV index
In Porkala, Finland, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 3 during September translates into the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Porkala?
What is the average humidity in September in Porkala?
How much does it rain in Porkala in September?
When it does not snow in Porkala?
Does it snow in Porkala in September?
How many hours of daylight does Porkala have in September?
When is the sunrise / sunset in September in Porkala?
How many hours of sunshine does Porkala have in September?
What is the UV index intensity in September in Porkala?
Average temperature in September
Porkala, Finland
- Average high temperature in September: 15.1°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 (-1.3°C).
- Average low temperature in September: 11.7°C
The month with the highest average low temperature is August (15°C).
The coldest month (with the lowest average low temperature) is January (-4.4°C).
Average pressure in September
Porkala, Finland
- Average pressure in September: 1013.4mbar
The month with the highest atmospheric pressure is May (1015mbar).
The month with the lowest atmospheric pressure is December (1008.5mbar).
Average wind speed in September
Porkala, Finland
- Average wind speed in September: 18.8km/h
The windiest month (with the highest average wind speed) is December (24km/h).
The calmest month (with the lowest average wind speed) is May (14.9km/h).
Average humidity in September
Porkala, Finland
- Average humidity in September: 79%
The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is May (74%).
Average rainfall in September
Porkala, Finland
- Average rainfall in September: 56mm
The wettest month (with the highest rainfall) is July (66mm).
The driest month (with the least rainfall) is April (26mm).
Average rainfall days in September
Porkala, Finland
- Average rainfall days in September: 16.9 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is February (7 days).
Average snowfall in September
Porkala, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (136mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Porkala, Finland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (17.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Porkala, Finland
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 42min).
The month with the shortest days is December (Average daylight: 6h and 0min).
- Average sunshine in September: 7h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 1h and 36min).
Average sunshine days in September
Porkala, Finland
- Average sunshine days in September: 9.8 days
The month with the most sunshine days is May (15.4 days).
The month with the least sunshine days is December (5.4 days).
Average UV index in September
Porkala, Finland
- Average UV index in September: 3
The months with the highest UV index are July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in September
Porkala, Finland
- Average cloud cover in September: 46
The month with the most cloud cover is December (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in September
Porkala, 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 January, February, March and December (8km).
