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
September brings a minor decrease, with the average high-temperature reducing from an enjoyable 19.1°C (66.4°F) in August to a moderate 13.3°C (55.9°F). Haapajärvi, during the month of September, experiences an average low-temperature of 6.4°C (43.5°F).Humidity
The average relative humidity in September in Haapajärvi is 84%.Rainfall
In September, the rain falls for 12.6 days. Throughout September, 35mm (1.38") of precipitation is accumulated. Throughout the year, there are 119.3 rainfall days, and 398mm (15.67") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Haapajärvi.Daylight
The average length of the day in September in Haapajärvi is 13h and 1min.On the first day of September, sunrise is at 06:04 and sunset at 20:33. On the last day of the month, sunrise is at 07:25 and sunset at 18:51 EEST.
Sunshine
In September, the average sunshine in Haapajärvi, Finland, is 6.1h.UV index
In Haapajärvi, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 3 in September converts into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Haapajärvi?
What is the average humidity in September in Haapajärvi?
How much does it rain in Haapajärvi in September?
When it does not snow in Haapajärvi?
Does it snow in Haapajärvi in September?
How many hours of daylight does Haapajärvi have in September?
When are sunrise and sunset in September in Haapajärvi?
How many hours of sunshine does Haapajärvi have in September?
What is the UV index reading in September in Haapajärvi?
Average temperature in September
Haapajärvi, Finland
- Average high temperature in September: 13.3°C
The warmest month (with the highest average high temperature) is July (21°C).
The month with the lowest average high temperature is January (-5.8°C).
- Average low temperature in September: 6.4°C
The month with the highest average low temperature is July (11.4°C).
The coldest month (with the lowest average low temperature) is January (-10°C).
Average pressure in September
Haapajärvi, Finland
- Average pressure in September: 1011.6mbar
The month with the highest atmospheric pressure is May (1014.2mbar).
The month with the lowest atmospheric pressure is December (1006mbar).
Average wind speed in September
Haapajärvi, Finland
- Average wind speed in September: 10.4km/h
The windiest month (with the highest average wind speed) is December (11.5km/h).
The calmest month (with the lowest average wind speed) is July (8.9km/h).
Average humidity in September
Haapajärvi, Finland
- Average humidity in September: 84%
The month with the highest relative humidity is January (96%).
The month with the lowest relative humidity is June (67%).
Average rainfall in September
Haapajärvi, Finland
- Average rainfall in September: 35mm
The wettest month (with the highest rainfall) is July (49mm).
The driest month (with the least rainfall) is April (23mm).
Average rainfall days in September
Haapajärvi, Finland
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is July (15.5 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in September
Haapajärvi, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is December (200mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Haapajärvi, Finland
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (21.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Haapajärvi, Finland
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 20h and 36min).
The month with the shortest days is December (Average daylight: 4h and 36min).
- Average sunshine in September: 6h and 1min
The month with the most sunshine is June (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 0h and 48min).
Average sunshine days in September
Haapajärvi, Finland
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is May (17.2 days).
The month with the least sunshine days is December (8.5 days).
Average UV index in September
Haapajärvi, Finland
- Average UV index in September: 3
The month with the highest UV index is 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
Haapajärvi, Finland
- Average cloud cover in September: 61
The month with the most cloud cover is January (Cloud cover 80).
The month with the least cloud cover is June (Cloud cover 47).
Average visibility in September
Haapajärvi, Finland
- Average visibility in September: 7km
The months with the highest visibility are May, June and July (9km).
The months with the lowest visibility are January and February (5km).
