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 still comfortable 16°C (60.8°F) from an enjoyable 19.3°C (66.7°F). Nighttime temperatures in Hjälm during September report a consistent average of 11.5°C (52.7°F).Humidity
In September, the average relative humidity is 79%.Rainfall
In Hjälm, Sweden, in September, during 16.7 rainfall days, 54mm (2.13") of precipitation is typically accumulated. Throughout the year, there are 175.7 rainfall days, and 549mm (21.61") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Hjälm.Daylight
In September, the average length of the day is 12h and 47min.On the first day of the month, sunrise is at 06:13 and sunset at 20:08. On the last day of September, sunrise is at 07:14 and sunset at 18:48 CEST.
Sunshine
In Hjälm, the average sunshine in September is 7.4h.UV index
In Hjälm, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 4 during September translates into the following guidance:
Be vigilant - Suggestions to stave off sun damage are provided. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Hjälm in September?
What is the average humidity in September in Hjälm?
How many days does it rain in September in Hjälm?
When it does not snow in Hjälm?
Does it snow in Hjälm in September?
What is the average length of the day in September in Hjälm?
When is the sunrise / sunset in September in Hjälm?
How long on average sun shines in September in Hjälm?
What is the UV index reading in September in Hjälm?
Average temperature in September
Hjälm, Sweden
- Average high temperature in September: 16°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 (1.7°C).
- Average low temperature in September: 11.5°C
The month with the highest average low temperature is August (14.2°C).
The coldest month (with the lowest average low temperature) is February (-1.4°C).
Average pressure in September
Hjälm, Sweden
- Average pressure in September: 1014mbar
The month with the highest atmospheric pressure is April (1014.8mbar).
The month with the lowest atmospheric pressure is December (1009mbar).
Average wind speed in September
Hjälm, Sweden
- Average wind speed in September: 18.2km/h
The windiest month (with the highest average wind speed) is December (22.1km/h).
The calmest month (with the lowest average wind speed) is June (15.9km/h).
Average humidity in September
Hjälm, Sweden
- Average humidity in September: 79%
The months with the highest relative humidity are January, February and December (86%).
The months with the lowest relative humidity are April and May (74%).
Average rainfall in September
Hjälm, Sweden
- Average rainfall in September: 54mm
The wettest month (with the highest rainfall) is August (68mm).
The driest month (with the least rainfall) is April (23mm).
Average rainfall days in September
Hjälm, Sweden
- Average rainfall days in September: 16.7 days
The month with the highest number of rainy days is August (19.5 days).
The month with the least rainy days is February (9.4 days).
Average snowfall in September
Hjälm, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (42mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Hjälm, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hjälm, Sweden
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 17h and 54min).
The month with the shortest days is December (Average daylight: 6h and 42min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The months with the least sunshine are February and November (Average sunshine: 3h and 24min).
Average sunshine days in September
Hjälm, Sweden
- Average sunshine days in September: 10.8 days
The month with the most sunshine days is April (16.3 days).
The month with the least sunshine days is August (9.5 days).
Average UV index in September
Hjälm, 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
Hjälm, Sweden
- Average cloud cover in September: 49
The month with the most cloud cover is November (Cloud cover 66).
The month with the least cloud cover is June (Cloud cover 40).
Average visibility in September
Hjälm, Sweden
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, October, November and December (9km).
