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
September
Weather in September
Temperature
The shift from August to September coincides with a small decrease in the average high-temperature, down to a moderate 15.8°C (60.4°F) from a pleasant 20.4°C (68.7°F). The mean low-temperature during September nights in Botkyrka is a fresh 10°C (50°F).Humidity
In Botkyrka, the average relative humidity in September is 80%.Rainfall
In Botkyrka, in September, during 13.2 rainfall days, 28mm (1.1") of precipitation is typically accumulated. Throughout the year, in Botkyrka, there are 141.5 rainfall days, and 378mm (14.88") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in Botkyrka is 12h and 50min.On the first day of the month, sunrise is at 05:46 and sunset at 19:50. On the last day of September, in Botkyrka, sunrise is at 06:52 and sunset at 18:24 CEST.
Sunshine
In September, the average sunshine in Botkyrka is 8.3h.UV index
The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index of 3 during September translates into these guidelines:
Ensure safety - Imperative it is to shield skin and eyes from damage. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Botkyrka?
What is the average humidity in September in Botkyrka?
How much does it rain in Botkyrka in September?
When it does not snow in Botkyrka?
Does it snow in Botkyrka in September?
What is the average length of the day in September in Botkyrka?
When are sunrise and sunset in September in Botkyrka?
How long on average sun shines in September in Botkyrka?
How high is the UV index in September in Botkyrka?
Average temperature in September
Botkyrka, Sweden
- Average high temperature in September: 15.8°C
The warmest month (with the highest average high temperature) is July (21.1°C).
The month with the lowest average high temperature is January (-0.3°C).
- Average low temperature in September: 10°C
The month with the highest average low temperature is July (13.5°C).
The coldest month (with the lowest average low temperature) is February (-3.4°C).
Average pressure in September
Botkyrka, Sweden
- Average pressure in September: 1013.4mbar
The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1007.9mbar).
Average wind speed in September
Botkyrka, Sweden
- Average wind speed in September: 14.5km/h
The windiest month (with the highest average wind speed) is December (18.9km/h).
The calmest months (with the lowest average wind speed) are July and August (12.8km/h).
Average humidity in September
Botkyrka, Sweden
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is May (72%).
Average rainfall in September
Botkyrka, Sweden
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is July (45mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in September
Botkyrka, Sweden
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is February (5.7 days).
Average snowfall in September
Botkyrka, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (102mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Botkyrka, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Botkyrka, 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 18min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is June (Average sunshine: 12h and 24min).
The month with the least sunshine is December (Average sunshine: 2h and 36min).
Average sunshine days in September
Botkyrka, Sweden
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is April (15.4 days).
The month with the least sunshine days is February (11.9 days).
Average UV index in September
Botkyrka, 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
Botkyrka, Sweden
- Average cloud cover in September: 42
The month with the most cloud cover is February (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in September
Botkyrka, 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).
