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
Weather in September
Temperature
September is marked by a subtle drop in average high-temperatures, transitioning from a comfortable 19.7°C (67.5°F) in August to a still refreshing 15.5°C (59.9°F). Keelva in September observes a slight diminution in temperature from daily highs, recording a low-temperature average of 12°C (53.6°F).Humidity
In Keelva, Estonia, the average relative humidity in September is 79%.Rainfall
In September, the rain falls for 18.5 days. Throughout September, 59mm (2.32") of precipitation is accumulated. In Keelva, during the entire year, the rain falls for 159.9 days and collects up to 528mm (20.79") of precipitation.Snowfall
In Keelva, snow does not fall in June through September.Daylight
The average length of the day in September in Keelva is 12h and 50min.On the first day of September in Keelva, sunrise is at 06:20 and sunset at 20:24. On the last day of the month, sunrise is at 07:26 and sunset at 18:58 EEST.
Sunshine
The average sunshine in September in Keelva is 7.5h.UV index
In September, the average daily maximum UV index in Keelva is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In September, the maximum UV index of 3 transforms into these recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Frequently asked questions
What is the average September temperature in Keelva?
What is the average humidity in September in Keelva?
How many days does it rain in September in Keelva?
When it does not snow in Keelva?
Does it snow in Keelva in September?
What is the average length of the day in September in Keelva?
When are sunrise and sunset in September in Keelva?
How many hours of sunshine does Keelva have in September?
How high is the UV index in September in Keelva?
Average temperature in September
Keelva, Estonia
- Average high temperature in September: 15.5°C
The warmest month (with the highest average high temperature) is July (19.8°C).
The month with the lowest average high temperature is January (-1.2°C).
- Average low temperature in September: 12°C
The month with the highest average low temperature is July (15.1°C).
The coldest month (with the lowest average low temperature) is February (-4.1°C).
Average pressure in September
Keelva, Estonia
- Average pressure in September: 1013.8mbar
The month with the highest atmospheric pressure is May (1015.1mbar).
The month with the lowest atmospheric pressure is December (1008.9mbar).
Average wind speed in September
Keelva, Estonia
- Average wind speed in September: 19.5km/h
The windiest month (with the highest average wind speed) is December (24km/h).
The calmest month (with the lowest average wind speed) is May (15.2km/h).
Average humidity in September
Keelva, Estonia
- Average humidity in September: 79%
The month with the highest relative humidity is February (89%).
The months with the lowest relative humidity are May and August (75%).
Average rainfall in September
Keelva, Estonia
- Average rainfall in September: 59mm
The wettest month (with the highest rainfall) is August (67mm).
The driest month (with the least rainfall) is April (21mm).
Average rainfall days in September
Keelva, Estonia
- Average rainfall days in September: 18.5 days
The month with the highest number of rainy days is August (19.3 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in September
Keelva, Estonia
- Average snowfall in September: 0mm
The month with the highest snowfall is January (91mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Keelva, Estonia
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (13.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Keelva, Estonia
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 12min).
- Average sunshine in September: 7h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 1h and 48min).
Average sunshine days in September
Keelva, Estonia
- Average sunshine days in September: 8.3 days
The month with the most sunshine days is May (16.6 days).
The month with the least sunshine days is December (6.9 days).
Average UV index in September
Keelva, Estonia
- Average UV index in September: 3
The months with the highest UV index are July and August (UV index 5).
The months with the lowest UV index are February, November and December (UV index 1).
Average cloud cover in September
Keelva, Estonia
- Average cloud cover in September: 47
The month with the most cloud cover is December (Cloud cover 77).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in September
Keelva, Estonia
- Average visibility in September: 10km
The months with the highest visibility are May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, April, October, November and December (9km).
Keelva, Estonia
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