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
The arrival of September correlates with a minor temperature reduction, down from August's enjoyable 19.7°C (67.5°F) to a still refreshing 15°C (59°F). The September average low temperature, marginally lower than the daytime high, records at a cool 10.7°C (51.3°F).Humidity
The average relative humidity in September is 80%.Rainfall
In Jorvi, in September, during 15.4 rainfall days, 42mm (1.65") of precipitation is typically accumulated. Throughout the year, there are 154.7 rainfall days, and 499mm (19.65") of precipitation is accumulated.Snowfall
In Jorvi, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 52min.On the first day of the month, sunrise is at 06:16 and sunset at 20:25. On the last day of September, sunrise is at 07:25 and sunset at 18:56 EEST.
Sunshine
The average sunshine in September is 7.7h.UV index
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 rays for average individuals.Note: A daily high UV index of 3 in September leads to these guidelines:
Ensure safety - Sun damage prevention is strongly urged. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Jorvi, Finland
- Average high temperature in September: 15°C
The warmest month (with the highest average high temperature) is July (20.3°C).
The month with the lowest average high temperature is January (-2.1°C).
- Average low temperature in September: 10.7°C
The month with the highest average low temperature is July (14.3°C).
The coldest month (with the lowest average low temperature) is January (-5.7°C).
Average pressure in September
Jorvi, Finland
- Average pressure in September: 1013.5mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1008.5mbar).
Average wind speed in September
Jorvi, Finland
- Average wind speed in September: 16.1km/h
The windiest month (with the highest average wind speed) is December (20.1km/h).
The calmest month (with the lowest average wind speed) is May (13.2km/h).
Average humidity in September
Jorvi, Finland
- Average humidity in September: 80%
The month with the highest relative humidity is February (91%).
The month with the lowest relative humidity is May (72%).
Average rainfall in September
Jorvi, Finland
- Average rainfall in September: 42mm
The wettest months (with the highest rainfall) are July and October (52mm).
The driest month (with the least rainfall) is April (28mm).
Average rainfall days in September
Jorvi, Finland
- Average rainfall days in September: 15.4 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in September
Jorvi, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (157mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Jorvi, 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
Jorvi, Finland
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 48min).
The month with the shortest days is December (Average daylight: 6h and 0min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is June (Average sunshine: 12h and 24min).
The month with the least sunshine is December (Average sunshine: 1h and 48min).
Average sunshine days in September
Jorvi, Finland
- Average sunshine days in September: 11.3 days
The month with the most sunshine days is May (16.5 days).
The month with the least sunshine days is December (5.6 days).
Average UV index in September
Jorvi, Finland
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March and December (UV index 1).
Average cloud cover in September
Jorvi, 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
Jorvi, 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).
