September weather forecastKoimla, Estonia

September

Weather in September

The first month of the autumn, September, is also a moderate month in Koimla, Estonia, with temperature in the range of an average high of 15.3°C (59.5°F) and an average low of 13.5°C (56.3°F).

Temperature

September is marked by a subtle drop in average high-temperatures, transitioning from an enjoyable 18.8°C (65.8°F) in August to a moderate 15.3°C (59.5°F). In Koimla, a slight decrease from the daytime peak is noted during the month of September, with an average low-temperature of 13.5°C (56.3°F).

Humidity

In September, the average relative humidity in Koimla is 78%.

Rainfall

In September, in Koimla, the rain falls for 14 days. Throughout September, 42mm (1.65") of precipitation is accumulated. Throughout the year, there are 153.3 rainfall days, and 470mm (18.5") of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In September, the average length of the day in Koimla is 12h and 49min.
On the first day of September, sunrise is at 06:32 and sunset at 20:30. On the last day of the month, sunrise is at 07:34 and sunset at 19:07 EEST.

Sunshine

In September, the average sunshine is 7.7h.

UV index

In Koimla, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.
Note: A daily high UV index of 4 in September leads to these guidelines:
Exercise prevention - Warding off sunburn is urged. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.

Frequently asked questions

In Koimla, 15.3°C (59.5°F) is the average high-temperature and 13.5°C (56.3°F) is the average low-temperature during September.

The average relative humidity in September is 78%.

In Koimla, Estonia, in September, during 14 rainfall days, 42mm (1.65") of precipitation is typically accumulated.

In Koimla, Estonia, snow does not fall in June through September.

In Koimla, Estonia, in September, it doesn't snow. In October, it regularly snows.

In September, the average day length in Koimla, Estonia, is 12h and 49min.

In September, on the first day of the month, sunrise is at 06:32 and sunset at 20:30. On the last day of the month, in Koimla, Estonia, sunrise is at 07:34 and sunset at 19:07 EEST.

The average sunshine duration in September is 7.7h.

The average daily maximum UV index in September in Koimla is 4. A UV Index of 3 to 5 symbolizes a moderate health threat from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Koimla, Estonia

  • Average high temperature in September: 15.3°C

The warmest month (with the highest average high temperature) is August (18.8°C).
The month with the lowest average high temperature is February (0.4°C).

  • Average low temperature in September: 13.5°C

The month with the highest average low temperature is August (16.6°C).
The coldest month (with the lowest average low temperature) is February (-2°C).

Average pressure in September
Koimla, Estonia

  • Average pressure in September: 1014.1mbar

The month with the highest atmospheric pressure is May (1015.3mbar).
The month with the lowest atmospheric pressure is December (1009mbar).

Average wind speed in September
Koimla, Estonia

  • Average wind speed in September: 23.8km/h

The windiest month (with the highest average wind speed) is December (29.8km/h).
The calmest month (with the lowest average wind speed) is May (18.4km/h).

Average humidity in September
Koimla, Estonia

  • Average humidity in September: 78%

The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is August (76%).

Average rainfall in September
Koimla, Estonia

  • Average rainfall in September: 42mm

The wettest month (with the highest rainfall) is December (59mm).
The driest month (with the least rainfall) is April (19mm).

Average rainfall days in September
Koimla, Estonia

  • Average rainfall days in September: 14 days

The month with the highest number of rainy days is November (17.5 days).
The month with the least rainy days is February (8.4 days).

Average snowfall in September
Koimla, Estonia

  • Average snowfall in September: 0mm

The month with the highest snowfall is January (109mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in September
Koimla, Estonia

  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (15.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Koimla, Estonia

  • Average daylight in September: 12h and 48min

The month with the longest days is June (Average daylight: 18h and 6min).
The month with the shortest days is December (Average daylight: 6h and 30min).

  • Average sunshine in September: 7h and 42min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 1h and 54min).

Average sunshine days in September
Koimla, Estonia

  • Average sunshine days in September: 13.7 days

The month with the most sunshine days is May (20 days).
The month with the least sunshine days is December (3.4 days).

Average UV index in September
Koimla, Estonia

  • Average UV index in September: 4

The months with the highest UV index are July and August (UV index 5).
The months with the lowest UV index are January and March (UV index 1).

Average cloud cover in September
Koimla, Estonia

  • Average cloud cover in September: 44

The month with the most cloud cover is December (Cloud cover 76).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in September
Koimla, Estonia

  • Average visibility in September: 10km

The months with the highest visibility are May, June, July, August, September and October (10km).
The months with the lowest visibility are January and December (8km).