September weather forecastYyteri, Finland
September
Weather in September
The first month of the autumn, September, is also a moderate month in Yyteri, Finland, with an average temperature fluctuating between 9.7°C (49.5°F) and 14.9°C (58.8°F).Temperature
With the commencement of September, Yyteri records a moderate temperature decline, with the average high easing from August's refreshing 19.8°C (67.6°F) to a mild 14.9°C (58.8°F). Yyteri experiences a steady low-temperature of 9.7°C (49.5°F) throughout September.Humidity
In September, the average relative humidity in Yyteri is 79%.Rainfall
In Yyteri, Finland, during September, the rain falls for 15.9 days and regularly aggregates up to 44mm (1.73") of precipitation. Throughout the year, there are 154.3 rainfall days, and 508mm (20") of precipitation is accumulated.Snowfall
In Yyteri, Finland, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 55min.On the first day of the month, sunrise is at 06:26 and sunset at 20:41. On the last day of September, sunrise is at 07:39 and sunset at 19:08 EEST.
Sunshine
The average sunshine in September in Yyteri is 7.4h.UV index
In September, the average daily maximum UV index in Yyteri is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The average daily UV index of 3 in September transforms into the following instructions:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Yyteri, Finland
- Average high temperature in September: 14.9°C
The warmest month (with the highest average high temperature) is July (20.7°C).
The month with the lowest average high temperature is January (-2.3°C).
- Average low temperature in September: 9.7°C
The month with the highest average low temperature is July (13.4°C).
The coldest month (with the lowest average low temperature) is January (-6°C).
Average pressure in September
Yyteri, Finland
- Average pressure in September: 1012.6mbar
The month with the highest atmospheric pressure is May (1014.7mbar).
The month with the lowest atmospheric pressure is December (1006.8mbar).
Average wind speed in September
Yyteri, Finland
- Average wind speed in September: 14.2km/h
The windiest month (with the highest average wind speed) is December (16.6km/h).
The calmest month (with the lowest average wind speed) is July (12.6km/h).
Average humidity in September
Yyteri, Finland
- Average humidity in September: 79%
The month with the highest relative humidity is February (92%).
The month with the lowest relative humidity is May (69%).
Average rainfall in September
Yyteri, Finland
- Average rainfall in September: 44mm
The wettest month (with the highest rainfall) is July (63mm).
The driest months (with the least rainfall) are March and April (31mm).
Average rainfall days in September
Yyteri, Finland
- Average rainfall days in September: 15.9 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in September
Yyteri, Finland
- Average snowfall in September: 0mm
The month with the highest snowfall is February (163mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Yyteri, Finland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Yyteri, Finland
- Average daylight in September: 12h and 54min
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: 7h and 24min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 2h and 0min).
Average sunshine days in September
Yyteri, Finland
- Average sunshine days in September: 10.5 days
The month with the most sunshine days is May (14.2 days).
The month with the least sunshine days is November (8.5 days).
Average UV index in September
Yyteri, 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 and December (UV index 1).
Average cloud cover in September
Yyteri, Finland
- Average cloud cover in September: 47
The months with the most cloud cover are January, February and December (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 38).
Average visibility in September
Yyteri, Finland
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The month with the lowest visibility is February (7km).
