May weather forecast and climate
Tallinn, Estonia

A beautiful summer view of an ancient town in Tallinn, Estonia, with a distant view of the sea
A beautiful summer view of an ancient town in Tallinn, Estonia, with a distant view of the sea

Temperature

In Tallinn, the average high-temperature is 15.2°C (59.4°F), and 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.

Rainfall

In May, the rain falls for 11 days. Throughout May, 36mm (1.4") of precipitation is accumulated. Throughout the year, there are 120 rainfall days, and 617mm (24.3") of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December.

Sea temperature

In May, the average sea temperature in Tallinn, Estonia, is 7.2°C (45°F). 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 May, the average sunshine is 8.9h.

UV index

The average UV index in May in Tallinn is 4.

What is the temperature in May in Tallinn?

The average high-temperature, in May, in Tallinn, is 15.2°C (59.4°F), while 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?

The average relative humidity in May in Tallinn is 69%.

How much does it rain in Tallinn in May?

In Tallinn, in May, during 11 rainfall days, 36mm (1.4") of precipitation is typically accumulated.

What is the last month it snows in Tallinn?

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

How cold is the water in May in Tallinn?

In Tallinn, in May, the average water temperature is 7.2°C (45°F). 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.

How many hours of daylight does Tallinn have in May?

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

How many hours of sunshine does Tallinn have in May?

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

How high is the UV index in May in Tallinn?

In Tallinn, Estonia, the average UV index in May is 4.
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).

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%).

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 lowest rainfall) is April (30mm).

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 lowest number of rainy days is February (3 days).

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 lowest number of snowfall days are June, July, August and September (0 days).

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).
Coldest months (with the lowest average sea temperature) are February and March (0.2°C).

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 shortest days is December (Average daylight: 6.2h).

  • Average sunshine in May: 8.9h

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

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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