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 sea temperature 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
Karlskrona, Sweden, in September undergoes a slight reduction in the average high-temperature, shifting from August's comfortable 19.8°C (67.6°F) to a still refreshing 16.3°C (61.3°F). Karlskrona observes an average low-temperature of 12.6°C (54.7°F) during the slightly cooler nights of September.Humidity
The average relative humidity in September in Karlskrona is 78%.Rainfall
In Karlskrona, in September, it is raining for 12.4 days, with typically 32mm (1.26") of accumulated precipitation. In Karlskrona, during the entire year, the rain falls for 150.2 days and collects up to 411mm (16.18") of precipitation.Snowfall
May through October are months without snowfall.Sea temperature
In Karlskrona, in September, the average water temperature is 16°C (60.8°F).Note: Swimming in 16°C (60.8°F) is not an enjoyable experience for most. Breathing becomes progressively more challenging as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).
Daylight
In September, the average length of the day is 12h and 45min.On the first day of the month, sunrise is at 06:02 and sunset at 19:52. On the last day of September, in Karlskrona, sunrise is at 06:59 and sunset at 18:35 CEST.
Sunshine
The average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index in Karlskrona is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 4 during September translates into the following directions:
Ensure safety - Recommendations to avert sunburn are presented. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Frequently asked questions
What is the usual temperature for Karlskrona in September?
What is the average humidity in September in Karlskrona?
How many days does it rain in September in Karlskrona?
When it does not snow in Karlskrona?
How cold is the water in September in Karlskrona?
What is the average length of the day in September in Karlskrona?
When are sunrise and sunset in September in Karlskrona?
How long on average sun shines in September in Karlskrona?
How high is the UV index in September in Karlskrona?
Average temperature in September
Karlskrona, Sweden
- Average high temperature in September: 16.3°C
The warmest month (with the highest average high temperature) is August (19.8°C).
The month with the lowest average high temperature is January (2°C).
- Average low temperature in September: 12.6°C
The month with the highest average low temperature is August (15.5°C).
The coldest month (with the lowest average low temperature) is February (-0.4°C).
Average pressure in September
Karlskrona, Sweden
- Average pressure in September: 1015.2mbar
The months with the highest atmospheric pressure are April and May (1015.5mbar).
The month with the lowest atmospheric pressure is December (1010.8mbar).
Average wind speed in September
Karlskrona, Sweden
- Average wind speed in September: 20.9km/h
The windiest month (with the highest average wind speed) is December (24.5km/h).
The calmest month (with the lowest average wind speed) is June (17.5km/h).
Average humidity in September
Karlskrona, Sweden
- Average humidity in September: 78%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April and May (75%).
Average rainfall in September
Karlskrona, Sweden
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is July (47mm).
The driest month (with the least rainfall) is April (15mm).
Average rainfall days in September
Karlskrona, Sweden
- Average rainfall days in September: 12.4 days
The month with the highest number of rainy days is July (16.4 days).
The month with the least rainy days is February (7.9 days).
Average snowfall in September
Karlskrona, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is January (56mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Karlskrona, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Karlskrona, Sweden
- Average sea temperature in September: 16°C
The best month for swimming (with the highest average sea temperature) is August (18.1°C).
The coldest months (with the lowest average sea temperature) are February and March (2.3°C).
Average daylight in September /
Average sunshine in September
Karlskrona, Sweden
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 36min).
The month with the shortest days is December (Average daylight: 7h and 0min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are January and December (Average sunshine: 3h and 6min).
Average sunshine days in September
Karlskrona, Sweden
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is April (18 days).
The months with the least sunshine days are November and December (9.3 days).
Average UV index in September
Karlskrona, Sweden
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Karlskrona, Sweden
- Average cloud cover in September: 40
The month with the most cloud cover is December (Cloud cover 69).
The months with the least cloud cover are June and August (Cloud cover 33).
Average visibility in September
Karlskrona, Sweden
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, November and December (9km).
Karlskrona, Sweden
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