The highest day temperature in May 2025 was 68°F. The lowest night temperature was 30°F. The average values for day and night temperatures during May were 54.8°F и 41.7°F respectivly.

The average sea surface temperature in May 2025 for Tartu was 48.0°F. The maximum and minimum values were 38.0°F and 53.8°F respectively.

You can expect various weather conditions during May. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in May for Tartu is 2.1 in. It makes may one of the most rainy months of the year.

The average wind speed in May is 7.4 mph. This value is relatively stable throughout the year.

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 Tartu in May is 9.7 hours.