September weather forecastKalajoki, Finland
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Kalajoki, Finland, with an average temperature varying between 9.5°C (49.1°F) and 13.3°C (55.9°F).Temperature
As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from 17.5°C (63.5°F) to a still refreshing 13.3°C (55.9°F). A mean low-temperature of 9.5°C (49.1°F) is anticipated during the month of September in Kalajoki, a slight step down from the daytime high.Humidity
In Kalajoki, the average relative humidity in September is 81%.Rainfall
In Kalajoki, in September, it is raining for 12.8 days, with typically 26mm (1.02") of accumulated precipitation. In Kalajoki, during the entire year, the rain falls for 119.3 days and collects up to 288mm (11.34") of precipitation.Snowfall
June through September are months without snowfall in Kalajoki.Sea temperature
In Kalajoki, in September, the average water temperature is 12.4°C (54.3°F).Note: It is risky to swim in 12.4°C (54.3°F). Temperatures beneath 10°C (50°F) induce rapid cold shock and hyperventilation.
Daylight
In Kalajoki, the average length of the day in September is 13h and 2min.On the first day of the month, sunrise is at 06:07 and sunset at 20:40. On the last day of September, in Kalajoki, sunrise is at 07:31 and sunset at 18:56 EEST.
Sunshine
The average sunshine in September in Kalajoki is 7.3h.UV index
The average daily maximum UV index in September in Kalajoki, Finland, is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: A daily maximum UV index of 3 in September translates into the following instructions:
Adopt protective measures - Suggestions to resist sunburn are offered. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Kalajoki, Finland
- Average high temperature in September: 13.3°C
The warmest month (with the highest average high temperature) is July (18.2°C).
The month with the lowest average high temperature is January (-3.8°C).
- Average low temperature in September: 9.5°C
The month with the highest average low temperature is July (12.9°C).
The coldest months (with the lowest average low temperature) are January and February (-7.3°C).
Average pressure in September
Kalajoki, Finland
- Average pressure in September: 1011.6mbar
The month with the highest atmospheric pressure is May (1014.2mbar).
The month with the lowest atmospheric pressure is December (1005.5mbar).
Average wind speed in September
Kalajoki, Finland
- Average wind speed in September: 16.5km/h
The windiest month (with the highest average wind speed) is December (19.2km/h).
The calmest month (with the lowest average wind speed) is July (13.2km/h).
Average humidity in September
Kalajoki, Finland
- Average humidity in September: 81%
The month with the highest relative humidity is February (92%).
The month with the lowest relative humidity is June (72%).
Average rainfall in September
Kalajoki, Finland
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is August (39mm).
The driest month (with the least rainfall) is April (14mm).
Average rainfall days in September
Kalajoki, Finland
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is August (16.2 days).
The month with the least rainy days is February (3.6 days).
Average snowfall in September
Kalajoki, Finland
- Average snowfall in September: 0mm
The months with the highest snowfall are February and December (85mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Kalajoki, Finland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Kalajoki, Finland
- Average sea temperature in September: 12.4°C
The best month for swimming (with the highest average sea temperature) is August (16.3°C).
The coldest month (with the lowest average sea temperature) is April (-0.3°C).
Average daylight in September /
Average sunshine in September
Kalajoki, Finland
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 21h and 0min).
The month with the shortest days is December (Average daylight: 4h and 18min).
- Average sunshine in September: 7h and 18min
The month with the most sunshine is June (Average sunshine: 12h and 48min).
The month with the least sunshine is December (Average sunshine: 1h and 12min).
Average sunshine days in September
Kalajoki, Finland
- Average sunshine days in September: 12.6 days
The month with the most sunshine days is May (17.5 days).
The month with the least sunshine days is December (10.5 days).
Average UV index in September
Kalajoki, 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, November and December (UV index 1).
Average cloud cover in September
Kalajoki, Finland
- Average cloud cover in September: 50
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is June (Cloud cover 38).
Average visibility in September
Kalajoki, 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 April (8km).
