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 is marked by a subtle drop in average high-temperatures, transitioning from an enjoyable 19.7°C (67.5°F) in August to a mild 15.3°C (59.5°F). September nights in Raunistula observe an average temperature dip to a fresh 10.2°C (50.4°F).Humidity
In September, the average relative humidity in Raunistula is 79%.Rainfall
In Raunistula, Finland, during September, the rain falls for 13.6 days and regularly aggregates up to 36mm (1.42") of precipitation. Throughout the year, there are 133.7 rainfall days, and 390mm (15.35") of precipitation is accumulated.Snowfall
In Raunistula, snow does not fall in June through September.Daylight
In September, the average length of the day in Raunistula is 12h and 53min.On the first day of the month, sunrise is at 06:26 and sunset at 20:35. On the last day of September, in Raunistula, sunrise is at 07:35 and sunset at 19:05 EEST.
Sunshine
The average sunshine in September in Raunistula is 7.7h.UV index
In Raunistula, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 3 in September converts into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Raunistula in September?
What is the average humidity in September in Raunistula?
How many days does it rain in September in Raunistula?
When it does not snow in Raunistula?
Does it snow in Raunistula in September?
What is the average length of the day in September in Raunistula?
When is the sunrise / sunset in September in Raunistula?
How long on average sun shines in September in Raunistula?
What is the UV index reading in September in Raunistula?
Average temperature in September
Raunistula, Finland
- Average high temperature in September: 15.3°C
The warmest month (with the highest average high temperature) is July (20.4°C).
The month with the lowest average high temperature is January (-1.9°C).
- Average low temperature in September: 10.2°C
The months with the highest average low temperature are July and August (13.8°C).
The coldest month (with the lowest average low temperature) is February (-5.6°C).
Average pressure in September
Raunistula, 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 (1007.6mbar).
Average wind speed in September
Raunistula, Finland
- Average wind speed in September: 15.8km/h
The windiest month (with the highest average wind speed) is December (20.4km/h).
The calmest month (with the lowest average wind speed) is July (13.9km/h).
Average humidity in September
Raunistula, Finland
- Average humidity in September: 79%
The month with the highest relative humidity is February (91%).
The month with the lowest relative humidity is May (71%).
Average rainfall in September
Raunistula, Finland
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is July (49mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in September
Raunistula, Finland
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is February (5.2 days).
Average snowfall in September
Raunistula, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (103mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Raunistula, Finland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Raunistula, Finland
- Average daylight in September: 12h and 5min
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 4min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 2h and 0min).
Average sunshine days in September
Raunistula, Finland
- Average sunshine days in September: 13.2 days
The month with the most sunshine days is May (17.2 days).
The month with the least sunshine days is December (9.6 days).
Average UV index in September
Raunistula, Finland
- Average UV index in September: 3
The months with the highest UV index are June, July and August (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
Raunistula, Finland
- Average cloud cover in September: 44
The month with the most cloud cover is December (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in September
Raunistula, 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 February and March (8km).
