September weather forecastMörtvik, Sweden
September
Weather in September
September, the first month of the autumn in Mörtvik, is still a mild month, with an average temperature fluctuating between 11.2°C (52.2°F) and 15.3°C (59.5°F).Temperature
The beginning of September subtly marks a decrease in the average high-temperature, transitioning from an enjoyable 19°C (66.2°F) in August to a moderate 15.3°C (59.5°F). A steady low-temperature average of 11.2°C (52.2°F) is logged during September, reflecting a modest dip from daytime readings.Humidity
The average relative humidity in September is 80%.Rainfall
In Mörtvik, in September, it is raining for 8.6 days, with typically 11mm (0.43") of accumulated precipitation. In Mörtvik, Sweden, during the entire year, the rain falls for 88.9 days and collects up to 116mm (4.57") of precipitation.Snowfall
In Mörtvik, snow does not fall in June through September.Daylight
In September, the average length of the day in Mörtvik is 12h and 50min.On the first day of September, sunrise is at 05:45 and sunset at 19:48. On the last day of the month, sunrise is at 06:51 and sunset at 18:23 CEST.
Sunshine
In Mörtvik, the average sunshine in September is 8.5h.UV index
In Mörtvik, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the maximum UV index of 3 transforms into these recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mörtvik, Sweden
- Average high temperature in September: 15.3°C
The warmest month (with the highest average high temperature) is July (19.5°C).
The month with the lowest average high temperature is February (0.3°C).
- Average low temperature in September: 11.2°C
The month with the highest average low temperature is August (14.4°C).
The coldest months (with the lowest average low temperature) are January and February (-2.3°C).
Average pressure in September
Mörtvik, Sweden
- 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 (1007.9mbar).
Average wind speed in September
Mörtvik, Sweden
- Average wind speed in September: 18.1km/h
The windiest month (with the highest average wind speed) is December (23.5km/h).
The calmest month (with the lowest average wind speed) is July (15.3km/h).
Average humidity in September
Mörtvik, Sweden
- Average humidity in September: 80%
The month with the highest relative humidity is November (86%).
The month with the lowest relative humidity is May (75%).
Average rainfall in September
Mörtvik, Sweden
- Average rainfall in September: 11mm
The wettest months (with the highest rainfall) are July and August (14mm).
The driest month (with the least rainfall) is April (4mm).
Average rainfall days in September
Mörtvik, Sweden
- Average rainfall days in September: 8.6 days
The month with the highest number of rainy days is August (10.9 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in September
Mörtvik, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (23mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Mörtvik, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mörtvik, Sweden
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 24min).
The month with the shortest days is December (Average daylight: 6h and 18min).
- Average sunshine in September: 8h and 30min
The month with the most sunshine is June (Average sunshine: 12h and 30min).
The month with the least sunshine is December (Average sunshine: 2h and 30min).
Average sunshine days in September
Mörtvik, Sweden
- Average sunshine days in September: 17.7 days
The months with the most sunshine days are April and May (21.8 days).
The month with the least sunshine days is December (14.4 days).
Average UV index in September
Mörtvik, 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 and February (UV index 1).
Average cloud cover in September
Mörtvik, Sweden
- Average cloud cover in September: 40
The months with the most cloud cover are January and February (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Mörtvik, 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).
