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
Weather in September
Temperature
The transition into September involves a small decrease in the average high-temperature, dipping slightly from a comfortable 19.6°C (67.3°F) in August to a still refreshing 15°C (59°F). September introduces a small decrease to a nighttime average of 11°C (51.8°F).Humidity
In September, the average relative humidity is 79%.Rainfall
In September, the rain falls for 13.3 days. Throughout September, 32mm (1.26") of precipitation is accumulated. Throughout the year, there are 144.4 rainfall days, and 463mm (18.23") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Linnainen is 12h and 52min.On the first day of September in Linnainen, sunrise is at 06:16 and sunset at 20:25. On the last day of the month, sunrise is at 07:25 and sunset at 18:56 EEST.
Sunshine
The average sunshine in September in Linnainen is 7.7h.UV index
The average daily maximum UV index in September in Linnainen is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: In September, a regular UV index of 3 translates into these guidelines:
Undertake precautions - Guarding against sun damage is counselled. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Linnainen?
What is the average humidity in September in Linnainen?
How many days does it rain in September in Linnainen?
When it does not snow in Linnainen?
Does it snow in Linnainen in September?
What is the average length of the day in September in Linnainen?
When is the sunrise / sunset in September in Linnainen?
How long on average sun shines in September in Linnainen?
How high is the UV index in September in Linnainen?
Average temperature in September
Linnainen, Finland
- Average high temperature in September: 15°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 (-2.2°C).
- Average low temperature in September: 11°C
The month with the highest average low temperature is July (14.5°C).
The coldest months (with the lowest average low temperature) are January and February (-5.5°C).
Average pressure in September
Linnainen, 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 (1008.6mbar).
Average wind speed in September
Linnainen, Finland
- Average wind speed in September: 16.9km/h
The windiest month (with the highest average wind speed) is December (21.1km/h).
The calmest month (with the lowest average wind speed) is May (13.7km/h).
Average humidity in September
Linnainen, 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 (72%).
Average rainfall in September
Linnainen, Finland
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is July (51mm).
The driest month (with the least rainfall) is April (27mm).
Average rainfall days in September
Linnainen, Finland
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is February (6.4 days).
Average snowfall in September
Linnainen, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (159mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Linnainen, Finland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Linnainen, 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 30min).
The month with the least sunshine is December (Average sunshine: 1h and 48min).
Average sunshine days in September
Linnainen, Finland
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is May (17 days).
The month with the least sunshine days is December (5.6 days).
Average UV index in September
Linnainen, 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, November and December (UV index 1).
Average cloud cover in September
Linnainen, 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
Linnainen, 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).
Linnainen, Finland
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