September weather forecastRoostoja, Estonia
September
Weather in September
The first month of the autumn, September, is also a moderate month in Roostoja, Estonia, with an average temperature ranging between min 8.9°C (48°F) and max 15.9°C (60.6°F).Temperature
September indicates a shift in the average high-temperature, from August's agreeable 21.2°C (70.2°F) to a mild 15.9°C (60.6°F). In Roostoja, in September, the average low-temperature is a frosty 8.9°C (48°F).Humidity
The average relative humidity in September in Roostoja is 81%.Rainfall
In Roostoja, Estonia, during September, the rain falls for 14.5 days and regularly aggregates up to 33mm (1.3") of precipitation. Throughout the year, there are 155.2 rainfall days, and 467mm (18.39") of precipitation is accumulated.Snowfall
In Roostoja, snow does not fall in June through September.Daylight
In Roostoja, the average length of the day in September is 12h and 50min.On the first day of September, sunrise is at 06:10 and sunset at 20:12. On the last day of the month, sunrise is at 07:15 and sunset at 18:47 EEST.
Sunshine
The average sunshine in September in Roostoja, Estonia, is 7.2h.UV index
In Roostoja, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: The daily high UV index of 3 during September translates into the following recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Roostoja, Estonia
- Average high temperature in September: 15.9°C
The warmest month (with the highest average high temperature) is July (22.8°C).
The month with the lowest average high temperature is January (-3.3°C).
- Average low temperature in September: 8.9°C
The month with the highest average low temperature is July (13°C).
The coldest month (with the lowest average low temperature) is January (-7.3°C).
Average pressure in September
Roostoja, Estonia
- Average pressure in September: 1014.4mbar
The months with the highest atmospheric pressure are May and October (1015.2mbar).
The month with the lowest atmospheric pressure is December (1010.4mbar).
Average wind speed in September
Roostoja, Estonia
- Average wind speed in September: 12.2km/h
The windiest month (with the highest average wind speed) is December (14.3km/h).
The calmest month (with the lowest average wind speed) is May (10.8km/h).
Average humidity in September
Roostoja, Estonia
- Average humidity in September: 81%
The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is May (70%).
Average rainfall in September
Roostoja, Estonia
- Average rainfall in September: 33mm
The wettest month (with the highest rainfall) is August (51mm).
The driest month (with the least rainfall) is April (30mm).
Average rainfall days in September
Roostoja, Estonia
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is October (16.5 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in September
Roostoja, Estonia
- Average snowfall in September: 0mm
The month with the highest snowfall is February (197mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Roostoja, Estonia
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (20.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Roostoja, Estonia
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 24min).
The month with the shortest days is December (Average daylight: 6h and 18min).
- Average sunshine in September: 7h and 12min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 1h and 42min).
Average sunshine days in September
Roostoja, Estonia
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is May (15.4 days).
The month with the least sunshine days is December (5.1 days).
Average UV index in September
Roostoja, Estonia
- 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
Roostoja, Estonia
- Average cloud cover in September: 53
The month with the most cloud cover is December (Cloud cover 81).
The month with the least cloud cover is July (Cloud cover 39).
Average visibility in September
Roostoja, Estonia
- 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 (6km).
