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
The transition into September involves a small decrease in the average high-temperature, dipping slightly from a pleasant 20.1°C (68.2°F) in August to a comfortable 16.5°C (61.7°F). During September, nights cool slightly to an average low of 12°C (53.6°F).Humidity
In Karlshamn, Sweden, the average relative humidity in September is 79%.Rainfall
In September, in Karlshamn, the rain falls for 10.4 days. Throughout September, 21mm (0.83") of precipitation is accumulated. In Karlshamn, during the entire year, the rain falls for 139.1 days and collects up to 303mm (11.93") of precipitation.Snowfall
In Karlshamn, snow does not fall in May through October.Sea temperature
In Karlshamn, in September, the average water temperature is 16.2°C (61.2°F).Note: Most people do not find swimming enjoyable in water of 16.2°C (61.2°F). The task of controlling breathing becomes tougher as the temperature drops from 21°C (69.8°F) to 15°C (59°F).
Daylight
In September, the average length of the day in Karlshamn is 12h and 45min.On the first day of September in Karlshamn, sunrise is at 06:05 and sunset at 19:55. On the last day of the month, sunrise is at 07:02 and sunset at 18:38 CEST.
Sunshine
The average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September in Karlshamn is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Enhance your sun protection with tightly woven, yet airy clothing.
Frequently asked questions
What are the temperatures in Karlshamn in September?
What is the average humidity in September in Karlshamn?
How many days does it rain in September in Karlshamn?
When it does not snow in Karlshamn?
What is the sea water temperature in September in Karlshamn?
What is the average length of the day in September in Karlshamn?
What time are sunrise and sunset in September in Karlshamn?
How many hours of sunshine does Karlshamn have in September?
What is the UV index intensity in September in Karlshamn?
Average temperature in September
Karlshamn, Sweden
- Average high temperature in September: 16.5°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 (1.8°C).
- Average low temperature in September: 12°C
The month with the highest average low temperature is August (14.6°C).
The coldest month (with the lowest average low temperature) is February (-0.8°C).
Average pressure in September
Karlshamn, 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
Karlshamn, Sweden
- Average wind speed in September: 18.4km/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 June (15.8km/h).
Average humidity in September
Karlshamn, Sweden
- Average humidity in September: 79%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is April (73%).
Average rainfall in September
Karlshamn, Sweden
- Average rainfall in September: 21mm
The wettest month (with the highest rainfall) is July (40mm).
The driest month (with the least rainfall) is April (13mm).
Average rainfall days in September
Karlshamn, Sweden
- Average rainfall days in September: 10.4 days
The month with the highest number of rainy days is July (14.6 days).
The month with the least rainy days is February (8.9 days).
Average snowfall in September
Karlshamn, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (57mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Karlshamn, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in September
Karlshamn, Sweden
- Average sea temperature in September: 16.2°C
The best month for swimming (with the highest average sea temperature) is August (17.9°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
Karlshamn, 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 2min
The months with the most sunshine are June and August (Average sunshine: 10h and 0min).
The months with the least sunshine are January and December (Average sunshine: 3h and 6min).
Average sunshine days in September
Karlshamn, Sweden
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is April (17.4 days).
The month with the least sunshine days is February (10.7 days).
Average UV index in September
Karlshamn, Sweden
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Karlshamn, Sweden
- Average cloud cover in September: 41
The month with the most cloud cover is December (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Karlshamn, 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).
Karlshamn, Sweden
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