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
Hirvensalmi experiences a temperature shift at the start of September, with average high-temperatures adjusting from a pleasant 20.4°C (68.7°F) in August to a mild 14.3°C (57.7°F). Hirvensalmi observes an average nighttime temperature of 8°C (46.4°F) during September.Humidity
The average relative humidity in September is 82%.Rainfall
In September, the rain falls for 14.2 days. Throughout September, 35mm (1.38") of precipitation is accumulated. Throughout the year, there are 125 rainfall days, and 408mm (16.06") of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall in Hirvensalmi. September is the first month it typically snows in Hirvensalmi. Throughout September, in the average 0.2 snowfall days, it receives 1mm (0.04") of snow. Throughout the year, there are 114.6 snowfall days, and 1087mm (42.8") of snow is accumulated.Daylight
In Hirvensalmi, Finland, the average length of the day in September is 12h and 55min.On the first day of September, sunrise is at 06:04 and sunset at 20:20. On the last day of the month, sunrise is at 07:18 and sunset at 18:47 EEST.
Sunshine
In Hirvensalmi, the average sunshine in September is 6.7h.UV index
In Hirvensalmi, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 3 in September interprets into the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Hirvensalmi in September?
What is the average humidity in September in Hirvensalmi?
How much does it rain in Hirvensalmi in September?
When does it start to snow in Hirvensalmi?
How many hours of daylight does Hirvensalmi have in September?
When is the sunrise / sunset in September in Hirvensalmi?
How long on average sun shines in September in Hirvensalmi?
What is the UV index intensity in September in Hirvensalmi?
Average temperature in September
Hirvensalmi, Finland
- Average high temperature in September: 14.3°C
The warmest month (with the highest average high temperature) is July (21.9°C).
The month with the lowest average high temperature is January (-5.3°C).
- Average low temperature in September: 8°C
The month with the highest average low temperature is July (12.6°C).
The coldest month (with the lowest average low temperature) is January (-9.2°C).
Average pressure in September
Hirvensalmi, Finland
- Average pressure in September: 1013.1mbar
The month with the highest atmospheric pressure is May (1014.7mbar).
The month with the lowest atmospheric pressure is December (1008.5mbar).
Average wind speed in September
Hirvensalmi, Finland
- Average wind speed in September: 11.1km/h
The windiest month (with the highest average wind speed) is December (12.9km/h).
The calmest months (with the lowest average wind speed) are July and August (10.1km/h).
Average humidity in September
Hirvensalmi, Finland
- Average humidity in September: 82%
The months with the highest relative humidity are January and February (95%).
The month with the lowest relative humidity is May (66%).
Average rainfall in September
Hirvensalmi, Finland
- Average rainfall in September: 35mm
The wettest month (with the highest rainfall) is July (44mm).
The driest month (with the least rainfall) is April (25mm).
Average rainfall days in September
Hirvensalmi, Finland
- Average rainfall days in September: 14.2 days
The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is February (2.7 days).
Average snowfall in September
Hirvensalmi, Finland
- Average snowfall in September: 1mm
The month with the highest snowfall is December (236mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in September
Hirvensalmi, Finland
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is January (24.4 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Hirvensalmi, Finland
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 19h and 24min).
The month with the shortest days is December (Average daylight: 5h and 30min).
- Average sunshine in September: 6h and 4min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 0h and 48min).
Average sunshine days in September
Hirvensalmi, Finland
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is May (16 days).
The month with the least sunshine days is December (6.5 days).
Average UV index in September
Hirvensalmi, Finland
- 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, February, March, November and December (UV index 1).
Average cloud cover in September
Hirvensalmi, Finland
- Average cloud cover in September: 56
The months with the most cloud cover are January and February (Cloud cover 82).
The month with the least cloud cover is July (Cloud cover 42).
Average visibility in September
Hirvensalmi, Finland
- Average visibility in September: 8km
The months with the highest visibility are May, June, July and August (9km).
The months with the lowest visibility are January and February (5km).
