September weather forecastKalix, Sweden
September
Weather in September
The first month of the autumn, September, is still a cool month in Kalix, Sweden, with an average temperature varying between 12.3°C (54.1°F) and 7.9°C (46.2°F).Temperature
As Kalix enters September, the average high-temperature subtly lowers from the a refreshing 16.8°C (62.2°F) of August to a fresh 12.3°C (54.1°F). During the month of September, Kalix's average nighttime temperature closely mirrors its daytime counterpart, at a chilly 7.9°C (46.2°F).Humidity
The average relative humidity in September is 81%.Rainfall
In Kalix, during September, the rain falls for 13.8 days and regularly aggregates up to 44mm (1.73") of precipitation. Throughout the year, in Kalix, Sweden, there are 117.7 rainfall days, and 437mm (17.2") of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 1mm (0.04") of snow. Throughout the year, in Kalix, there are 96.5 snowfall days, and 1080mm (42.52") of snow is accumulated.Sea temperature
In Kalix, the average seawater temperature in September is 12.3°C (54.1°F).Note: While a brief time in 12.3°C (54.1°F) at 13°C (55.4°F) is already bracing, plunging below 10°C (50°F) can severely affect breathing and introduce a cold shock, relying on your physical state.
Daylight
In Kalix, the average length of the day in September is 13h and 6min.On the first day of the month, sunrise is at 05:05 and sunset at 19:49. On the last day of September, sunrise is at 06:36 and sunset at 17:58 CEST.
Sunshine
In Kalix, the average sunshine in September is 7.2h.UV index
In Kalix, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 3 during September translates into these guidelines:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Kalix, Sweden
- Average high temperature in September: 12.3°C
The warmest month (with the highest average high temperature) is July (18.3°C).
The month with the lowest average high temperature is January (-6.3°C).
- Average low temperature in September: 7.9°C
The month with the highest average low temperature is July (12.4°C).
The coldest month (with the lowest average low temperature) is February (-11.1°C).
Average pressure in September
Kalix, Sweden
- Average pressure in September: 1010.9mbar
The month with the highest atmospheric pressure is May (1014mbar).
The month with the lowest atmospheric pressure is December (1004.8mbar).
Average wind speed in September
Kalix, Sweden
- Average wind speed in September: 15km/h
The windiest month (with the highest average wind speed) is December (15.9km/h).
The calmest month (with the lowest average wind speed) is April (12.2km/h).
Average humidity in September
Kalix, Sweden
- Average humidity in September: 81%
The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is June (68%).
Average rainfall in September
Kalix, Sweden
- Average rainfall in September: 44mm
The wettest month (with the highest rainfall) is December (51mm).
The driest month (with the least rainfall) is April (23mm).
Average rainfall days in September
Kalix, Sweden
- Average rainfall days in September: 13.8 days
The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in September
Kalix, Sweden
- Average snowfall in September: 1mm
The month with the highest snowfall is March (231mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Kalix, Sweden
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (17.9 days).
The months with the least snowfall days are July and August (0 days).
Average sea temperature in September
Kalix, Sweden
- Average sea temperature in September: 12.3°C
The best month for swimming (with the highest average sea temperature) is July (16.8°C).
The coldest month (with the lowest average sea temperature) is February (-0.8°C).
Average daylight in September /
Average sunshine in September
Kalix, Sweden
- Average daylight in September: 13h and 6min
The month with the longest days is July (Average daylight: 20h and 48min).
The month with the shortest days is December (Average daylight: 3h and 18min).
- Average sunshine in September: 7h and 12min
The month with the most sunshine is July (Average sunshine: 12h and 42min).
The month with the least sunshine is December (Average sunshine: 1h and 18min).
Average sunshine days in September
Kalix, Sweden
- Average sunshine days in September: 14 days
The months with the most sunshine days are June and August (16.3 days).
The month with the least sunshine days is April (9.8 days).
Average UV index in September
Kalix, Sweden
- 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, March and December (UV index 1).
Average cloud cover in September
Kalix, Sweden
- Average cloud cover in September: 50
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 40).
Average visibility in September
Kalix, Sweden
- Average visibility in September: 9km
The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February, March and April (7km).
