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
Käpylä records a mild change in average high-temperature during September, easing from an enjoyable 19.6°C (67.3°F) in August to a still refreshing 15.1°C (59.2°F). Käpylä, during September nights, observes a steady temperature, averaging at a fresh 11°C (51.8°F).Humidity
In September, the average relative humidity is 79%.Rainfall
In Käpylä, during September, the rain falls for 13.5 days and regularly aggregates up to 34mm (1.34") of precipitation. Throughout the year, there are 144.6 rainfall days, and 465mm (18.31") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Käpylä, Finland, the average length of the day in September is 12h and 52min.On the first day of the month, sunrise is at 06:15 and sunset at 20:24. On the last day of September, in Käpylä, sunrise is at 07:24 and sunset at 18:55 EEST.
Sunshine
In Käpylä, the average sunshine in September is 7.5h.UV index
In September, the average daily maximum UV index in Käpylä, Finland, is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the maximum UV index of 3 suggests these recommendations:
Adopt protective measures - It is advised to guard against sun damage. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Frequently asked questions
What are September temperatures in Käpylä?
What is the average humidity in September in Käpylä?
How many days does it rain in September in Käpylä?
When it does not snow in Käpylä?
Does it snow in Käpylä in September?
What is the average length of the day in September in Käpylä?
When is the sunrise / sunset in September in Käpylä?
How long on average sun shines in September in Käpylä?
What is the UV index reading in September in Käpylä?
Average temperature in September
Käpylä, Finland
- Average high temperature in September: 15.1°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
Käpylä, 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 (1008.6mbar).
Average wind speed in September
Käpylä, Finland
- Average wind speed in September: 17km/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
Käpylä, 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
Käpylä, Finland
- Average rainfall in September: 34mm
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
Käpylä, Finland
- Average rainfall days in September: 13.5 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
Käpylä, 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
Käpylä, 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
Käpylä, 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 3min
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 42min).
Average sunshine days in September
Käpylä, Finland
- Average sunshine days in September: 13.6 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
Käpylä, 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
Käpylä, 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
Käpylä, 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).
Käpylä, Finland
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