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
In Simpele, the beginning of September is marked by a lowered average high-temperature, shifting from August's pleasant 20.8°C (69.4°F) to a moderate 15.1°C (59.2°F). Throughout the month of September, Simpele observes an average nighttime temperature of 8.5°C (47.3°F).Humidity
In Simpele, Finland, the average relative humidity in September is 82%.Rainfall
In September, the rain falls for 13 days. Throughout September, 36mm (1.42") of precipitation is accumulated. Throughout the year, there are 122.1 rainfall days, and 422mm (16.61") of precipitation is accumulated.Snowfall
In Simpele, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 55min.On the first day of September, sunrise is at 05:55 and sunset at 20:09. On the last day of the month, sunrise is at 07:07 and sunset at 18:36 EEST.
Sunshine
In September, the average sunshine is 5.8h.UV index
In Simpele, the average daily maximum UV index in September is 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: During September, 2 as the daily maximum UV index converts into the following advice:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. 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 is the average September temperature?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in Simpele in September?
How many hours of daylight does Simpele have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Simpele, Finland
- Average high temperature in September: 15.1°C
The warmest month (with the highest average high temperature) is July (22.4°C).
The month with the lowest average high temperature is January (-4.8°C).
- Average low temperature in September: 8.5°C
The month with the highest average low temperature is July (13.1°C).
The coldest month (with the lowest average low temperature) is January (-8.9°C).
Average pressure in September
Simpele, Finland
- Average pressure in September: 1013.4mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1008.9mbar).
Average wind speed in September
Simpele, Finland
- Average wind speed in September: 10.3km/h
The windiest month (with the highest average wind speed) is December (12.1km/h).
The calmest months (with the lowest average wind speed) are July and August (9.8km/h).
Average humidity in September
Simpele, 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 (65%).
Average rainfall in September
Simpele, Finland
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is August (44mm).
The driest month (with the least rainfall) is April (27mm).
Average rainfall days in September
Simpele, Finland
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is July (15.4 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in September
Simpele, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (212mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Simpele, Finland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (19 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Simpele, 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 36min).
- Average sunshine in September: 5h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 1h and 18min).
Average sunshine days in September
Simpele, Finland
- Average sunshine days in September: 14.1 days
The month with the most sunshine days is May (17.6 days).
The month with the least sunshine days is December (9.4 days).
Average UV index in September
Simpele, Finland
- Average UV index in September: 2
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, October, November and December (UV index 1).
Average cloud cover in September
Simpele, Finland
- Average cloud cover in September: 58
The month with the most cloud cover is February (Cloud cover 84).
The month with the least cloud cover is July (Cloud cover 43).
Average visibility in September
Simpele, 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 and February (5km).
