The highest day temperature in January 2026 was 28°F. The lowest night temperature was -12°F. The average values for day and night temperatures during January were 12.1°F и 4.6°F respectivly.

The average sea surface temperature in January 2026 for Tartu was 30.8°F. The maximum and minimum values were 30.2°F and 31.8°F respectively.

Most of the days in January are gloomy but you can also expect sunny days.

Precipitation total in January for Tartu is 1.5 in. It makes january one of the least rainy months of the year.

The average wind speed in January is 8.4 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 January is 1.6 hours.