May 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 May

May, the last month of the spring, in Tallinn, is a mild month, with average temperature varying between 5.2°C (41.4°F) and 15.2°C (59.4°F).

Temperature

In Tallinn, the average high-temperature rises, from a frosty 9.2°C (48.6°F) in April, to a moderate 15.2°C (59.4°F). In Tallinn, the average low-temperature is 5.2°C (41.4°F).

Humidity

With an average relative humidity of 69%, May is the least humid month in Tallinn.

Rainfall

In Tallinn, Estonia, during 11 rainfall days, 36mm (1.42") of precipitation is typically accumulated. Throughout the year, in Tallinn, there are 120 rainfall days, and 617mm (24.29") of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. Throughout May, there are 0.1 snowfall days. Throughout the year, there are 55.1 snowfall days.

Sea temperature

In Tallinn, the average seawater temperature in May is 7.2°C (45°F).
Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

Daylight

In Tallinn, the average length of the day is 17.1h.

Sunshine

In Tallinn, the average sunshine in May is 8.9h.

UV index

In May, the average daily maximum UV index in Tallinn is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from the exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 4 interpret into the following advice:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in May in Tallinn?

In Tallinn, Estonia, in May, the average high-temperature is 15.2°C (59.4°F), and the average low-temperature is 5.2°C (41.4°F).

What is the least humid month in Tallinn?

The least humid month in Tallinn is May, with an average relative humidity of 69%.

What is the average humidity in May in Tallinn?

In Tallinn, the average relative humidity in May is 69%.

How much does it rain in Tallinn in May?

In May, in Tallinn, Estonia, the rain falls for 11 days. Throughout May, 36mm (1.42") of precipitation is accumulated.

What is the last month it snows in Tallinn?

May is the last month it regularly snows in Tallinn, Estonia. Throughout May, there are 0.1 snowfall days.

How cold is the water in May in Tallinn?

In Tallinn, Estonia, the average seawater temperature in May is 7.2°C (45°F). Swimming in 7.2°C (45°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

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

In Tallinn, Estonia, the average length of the day in May is 17.1h.

How long on average sun shines in May in Tallinn?

In May, the average sunshine is 8.9h.

What is the UV index intensity in May in Tallinn?

The average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV radiation.

Average temperature in May
Tallinn, Estonia

Average temperature in May - Tallinn, Estonia
  • Average high temperature in May: 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 May: 5.2°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).

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Average humidity in May
Tallinn, Estonia

Average humidity in May - Tallinn, Estonia
  • Average humidity in May: 69%

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

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Average rainfall in May
Tallinn, Estonia

Average rainfall in May - Tallinn, Estonia
  • Average rainfall in May: 36mm

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

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Average rainfall days in May
Tallinn, Estonia

Average rainfall days in May - Tallinn, Estonia
  • Average rainfall days in May: 11 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).

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Average snowfall days in May
Tallinn, Estonia

Average snowfall days in May - Tallinn, Estonia
  • Average snowfall days in May: 0.1 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).

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Average sea temperature in May
Tallinn, Estonia

Average sea temperature in May - Tallinn, Estonia
  • Average sea temperature in May: 7.2°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).

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

Average daylight in May / Average sunshine in May - Tallinn, Estonia
  • Average daylight in May: 17.1h

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 May: 8.9h

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

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Average UV index in May
Tallinn, Estonia

Average UV index in May - Tallinn, Estonia
  • Average UV index in May: 4

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).

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