September weather forecastNacka, Sweden
September
Weather in September
September, the first month of the autumn in Nacka, is also a moderate month, with an average temperature varying between 10.5°C (50.9°F) and 15.5°C (59.9°F).Temperature
The commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from an enjoyable 19.8°C (67.6°F) in August to a mild 15.5°C (59.9°F). Nacka, during the nights of September, averages a temperature close to its daytime high, at a cool 10.5°C (50.9°F).Humidity
In Nacka, Sweden, the average relative humidity in September is 79%.Rainfall
In Nacka, in September, it is raining for 11.8 days, with typically 20mm (0.79") of accumulated precipitation. Throughout the year, there are 132.1 rainfall days, and 289mm (11.38") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Nacka.Daylight
In Nacka, the average length of the day in September is 12h and 50min.On the first day of September in Nacka, sunrise is at 05:45 and sunset at 19:49. On the last day of the month, sunrise is at 06:51 and sunset at 18:23 CEST.
Sunshine
In September, the average sunshine is 8.4h.UV index
The average daily maximum UV index in September in Nacka is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 3 translates into these guidelines:
Take necessary precautions - Suggestions to elude sunburn are provided. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Nacka, Sweden
- Average high temperature in September: 15.5°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 (-0.1°C).
- Average low temperature in September: 10.5°C
The month with the highest average low temperature is July (13.9°C).
The coldest month (with the lowest average low temperature) is January (-3°C).
Average pressure in September
Nacka, 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
Nacka, Sweden
- Average wind speed in September: 16km/h
The windiest month (with the highest average wind speed) is December (20.9km/h).
The calmest month (with the lowest average wind speed) is July (13.8km/h).
Average humidity in September
Nacka, Sweden
- Average humidity in September: 79%
The months with the highest relative humidity are January, February, November and December (86%).
The month with the lowest relative humidity is May (73%).
Average rainfall in September
Nacka, Sweden
- Average rainfall in September: 20mm
The wettest month (with the highest rainfall) is July (35mm).
The driest month (with the least rainfall) is April (13mm).
Average rainfall days in September
Nacka, Sweden
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is July (14.8 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in September
Nacka, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (82mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Nacka, Sweden
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Nacka, Sweden
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 12min).
- Average sunshine in September: 8h and 24min
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 36min).
Average sunshine days in September
Nacka, Sweden
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is May (16.3 days).
The month with the least sunshine days is December (11 days).
Average UV index in September
Nacka, Sweden
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in September
Nacka, Sweden
- Average cloud cover in September: 41
The month with the most cloud cover is February (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Nacka, Sweden
- 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, April, May, October, November and December (9km).
