September weather forecastVainikkala, Finland
September
Weather in September
The first month of the autumn, September, is still a mild month in Vainikkala, Finland, with an average temperature fluctuating between 14.8°C (58.6°F) and 8.6°C (47.5°F).Temperature
With September's arrival, Vainikkala sees a decrease in average high-temperatures, moving from a pleasant 20.5°C (68.9°F) in August to a moderate 14.8°C (58.6°F). The nighttime temperature dips to a chilly 8.6°C (47.5°F) on average during September.Humidity
In September, the average relative humidity is 81%.Rainfall
In Vainikkala, in September, it is raining for 16.2 days, with typically 47mm (1.85") of accumulated precipitation. Throughout the year, in Vainikkala, there are 151 rainfall days, and 528mm (20.79") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Vainikkala is 12h and 53min.On the first day of September in Vainikkala, sunrise is at 06:00 and sunset at 20:12. On the last day of the month, sunrise is at 07:11 and sunset at 18:41 EEST.
Sunshine
In September, the average sunshine in Vainikkala, Finland, is 6.5h.UV index
In September, the average daily maximum UV index in Vainikkala is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: A daily high UV index of 3 in September leads to these guidelines:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Vainikkala, Finland
- Average high temperature in September: 14.8°C
The warmest month (with the highest average high temperature) is July (22.3°C).
The month with the lowest average high temperature is January (-4.7°C).
- Average low temperature in September: 8.6°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 (-8.6°C).
Average pressure in September
Vainikkala, Finland
- Average pressure in September: 1013.2mbar
The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1008.9mbar).
Average wind speed in September
Vainikkala, Finland
- Average wind speed in September: 11.8km/h
The windiest month (with the highest average wind speed) is December (13.7km/h).
The calmest months (with the lowest average wind speed) are July and August (10.6km/h).
Average humidity in September
Vainikkala, Finland
- Average humidity in September: 81%
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is May (66%).
Average rainfall in September
Vainikkala, Finland
- Average rainfall in September: 47mm
The wettest month (with the highest rainfall) is August (53mm).
The driest month (with the least rainfall) is April (32mm).
Average rainfall days in September
Vainikkala, Finland
- Average rainfall days in September: 16.2 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in September
Vainikkala, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (262mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Vainikkala, Finland
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is January (22.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Vainikkala, Finland
- Average daylight in September: 12h and 54min
The month with the longest days is June (Average daylight: 19h and 6min).
The month with the shortest days is December (Average daylight: 5h and 48min).
- Average sunshine in September: 6h and 30min
The month with the most sunshine is June (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 0h and 48min).
Average sunshine days in September
Vainikkala, Finland
- Average sunshine days in September: 9.2 days
The month with the most sunshine days is May (14.3 days).
The month with the least sunshine days is December (4.7 days).
Average UV index in September
Vainikkala, 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
Vainikkala, Finland
- Average cloud cover in September: 56
The month with the most cloud cover is February (Cloud cover 84).
The months with the least cloud cover are July and August (Cloud cover 42).
Average visibility in September
Vainikkala, Finland
- Average visibility in September: 9km
The months with the highest visibility are May, June, July, August and September (9km).
The months with the lowest visibility are January and February (5km).
