The highest day temperature in May 2023 was 66°F. The lowest night temperature was 32°F. The average values for day and night temperatures during May were 54.7°F и 43.8°F respectivly.

The average sea surface temperature in May 2023 for Tallinn was 45.4°F. The maximum and minimum values were 38.4°F and 51.6°F respectively.

Most of the days in May are sunny but you can also expect cloudy and gloomy days.

Precipitation total in May for Tallinn is 1.7 in. It makes may one of the least rainy months of the year.

The average wind speed in May is 9.6 mph. It makes May the most windless month of the year for Tallinn.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Tallinn in May is 10.6 hours.