September weather forecast and climate
Tallinn, Estonia

A beautiful summer view of an ancient town in Tallinn, Estonia
A beautiful summer view of an ancient town in Tallinn, Estonia

Weather in September

September, the first month of the autumn, in Tallinn, is still a mild month, with temperature in the range of an average high of 15.2°C (59.4°F) and an average low of 7.8°C (46°F).

Temperature

In Tallinn, the average high-temperature in September decreases, from an agreeable 20.4°C (68.7°F) in August, to a moderate 15.2°C (59.4°F). In September, the average low-temperature is 7.8°C (46°F).

Humidity

In Tallinn, the average relative humidity is 82%.

Rainfall

In Tallinn, Estonia, during September, the rain falls for 16 days and regularly aggregates up to 60mm (2.36") of precipitation. In Tallinn, during the entire year, the rain falls for 120 days and collects up to 617mm (24.29") of precipitation.

Snowfall

In Tallinn snow does not fall in June through September.

Sea temperature

In Tallinn, the average water temperature is 15.8°C (60.4°F).
Note: For swimming, a surface water temperature of 15.8°C (60.4°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

Daylight

In Tallinn, Estonia, the average length of the day in September is 12.8h.

Sunshine

In Tallinn, Estonia, the average sunshine in September is 4.7h.

UV index

In Tallinn, Estonia, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 3 interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
[Resources]

FAQ

What is the temperature in September in Tallinn?

The average high-temperature, in September, in Tallinn, Estonia, is 15.2°C (59.4°F), while the average low-temperature is 7.8°C (46°F).

What is the average humidity in September in Tallinn?

In Tallinn, Estonia, the average relative humidity in September is 82%.

How much does it rain in Tallinn in September?

In Tallinn, Estonia, in September, it is raining for 16 days, with typically 60mm (2.36") of accumulated precipitation.

Does it snow in Tallinn in September?

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

When it does not snow in Tallinn?

June through September are months without snowfall in Tallinn, Estonia.

How cold is the water in September in Tallinn?

In September, the average sea temperature in Tallinn is 15.8°C (60.4°F). For swimming, a surface water temperature of 15.8°C (60.4°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

What is the average length of the day in September in Tallinn?

The average length of the day in September in Tallinn is 12.8h.

How many hours of sunshine does Tallinn have in September?

The average sunshine in September in Tallinn, Estonia, is 4.7h.

What is the UV index reading in September in Tallinn?

The average daily maximum UV index in September in Tallinn, Estonia, is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in September
Tallinn, Estonia

Average temperature in September - Tallinn, Estonia
  • Average high temperature in September: 15.2°C

The warmest month (with the highest average high temperature) is July (21.8°C).
The month with the lowest average high temperature is February (-1.6°C).

  • Average low temperature in September: 7.8°C

The month with the highest average low temperature is July (12.7°C).
The coldest month (with the lowest average low temperature) is February (-7°C).

[Resources]

Average humidity in September
Tallinn, Estonia

Average humidity in September - Tallinn, Estonia
  • Average humidity in September: 82%

Months with the highest relative humidity are January, November and December (88%).
The month with the lowest relative humidity is May (69%).

[Resources]

Average rainfall in September
Tallinn, Estonia

Average rainfall in September - Tallinn, Estonia
  • Average rainfall in September: 60mm

The wettest month (with the highest rainfall) is July (74mm).
The driest month (with the least rainfall) is April (30mm).

[Resources]

Average rainfall days in September
Tallinn, Estonia

Average rainfall days in September - Tallinn, Estonia
  • Average rainfall days in September: 16 days

Months with the highest number of rainy days are September and October (16 days).
The month with the least rainy days is February (3 days).

[Resources]

Average snowfall days in September
Tallinn, Estonia

Average snowfall days in September - Tallinn, Estonia
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (14 days).
Months with the least snowfall days are June, July, August and September (0 days).

[Resources]

Average sea temperature in September
Tallinn, Estonia

Average sea temperature in September - Tallinn, Estonia
  • Average sea temperature in September: 15.8°C

The best month for swimming (with the highest average sea temperature) is August (19.1°C).
The coldest months (with the lowest average sea temperature) are February and March (0.2°C).

[Resources]

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

Average daylight in September / Average sunshine in September - Tallinn, Estonia
  • Average daylight in September: 12.8h

The month with the longest days is June (Average daylight: 18.5h).
The month with the shortest days is December (Average daylight: 6.2h).

  • Average sunshine in September: 4.7h

The month with the most sunshine is June (Average sunshine: 10.1h).
The month with the least sunshine is December (Average sunshine: 0.5h).

[Resources]

Average UV index in September
Tallinn, Estonia

Average UV index in September - Tallinn, Estonia
  • Average UV index in September: 3

Months with the highest UV index are June and July (UV index 5).
Months with the lowest UV index are January, November and December (UV index 0).

[Resources]