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 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 shift from August to September includes a minor decrease in the average high-temperature, lightly dropping from an agreeable 20.6°C (69.1°F) to a refreshing 16.1°C (61°F). Norrmalm records a mean low-temperature of 9.7°C (49.5°F) in September.Humidity
The average relative humidity in September in Norrmalm is 79%.Rainfall
In Norrmalm, in September, it is raining for 12.3 days, with typically 24mm (0.94") of accumulated precipitation. Throughout the year, there are 136.6 rainfall days, and 352mm (13.86") of precipitation is accumulated.Snowfall
In Norrmalm, snow does not fall in June through September.Daylight
In September, the average length of the day in Norrmalm is 12h and 50min.On the first day of September, 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 Norrmalm, the average sunshine in September is 8.1h.UV index
In Norrmalm, Sweden, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 3 during September leads to these advisories:
Heed the precautions - Suggestions to avoid sunburn are made. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Frequently asked questions
What are the temperatures in Norrmalm in September?
What is the average humidity in September in Norrmalm?
How much does it rain in Norrmalm in September?
When it does not snow in Norrmalm?
Does it snow in Norrmalm in September?
How many hours of daylight does Norrmalm have in September?
What time are sunrise and sunset in September in Norrmalm?
How many hours of sunshine does Norrmalm have in September?
How high is the UV index in September in Norrmalm?
Average temperature in September
Norrmalm, Sweden
- Average high temperature in September: 16.1°C
The warmest month (with the highest average high temperature) is July (21.3°C).
The month with the lowest average high temperature is January (-0.3°C).
- Average low temperature in September: 9.7°C
The month with the highest average low temperature is July (13.3°C).
The coldest month (with the lowest average low temperature) is January (-3.6°C).
Average pressure in September
Norrmalm, 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 (1007.8mbar).
Average wind speed in September
Norrmalm, Sweden
- Average wind speed in September: 14.1km/h
The windiest month (with the highest average wind speed) is December (18.5km/h).
The calmest month (with the lowest average wind speed) is August (12.5km/h).
Average humidity in September
Norrmalm, Sweden
- Average humidity in September: 79%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is May (71%).
Average rainfall in September
Norrmalm, Sweden
- Average rainfall in September: 24mm
The wettest month (with the highest rainfall) is July (43mm).
The driest month (with the least rainfall) is April (15mm).
Average rainfall days in September
Norrmalm, Sweden
- Average rainfall days in September: 12.3 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is February (5 days).
Average snowfall in September
Norrmalm, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (99mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Norrmalm, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Norrmalm, Sweden
- Average daylight in September: 12h and 5min
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 1min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 2h and 30min).
Average sunshine days in September
Norrmalm, Sweden
- Average sunshine days in September: 14.5 days
The months with the most sunshine days are April and May (15.5 days).
The month with the least sunshine days is November (12 days).
Average UV index in September
Norrmalm, 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
Norrmalm, Sweden
- Average cloud cover in September: 43
The month with the most cloud cover is February (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
Norrmalm, Sweden
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March, April, May, July, August, September, October, November and December (9km).
Norrmalm, Sweden
Weather forecast for your location
2. Allow the app to use your location
