- Climate Type
- Humid continental
Updated July 2026 · Sources cited: climatestotravel.com, weatherspark.com
Good to know
Good to Know
- Winter brings genuine cold; pack thermal layers if traveling December–February. Snowfall transforms the city but requires appropriate footwear.
- Summer (June–August) offers near-constant daylight, making it ideal for exploration; expect occasional rain even in peak season.
- Spring (May) and early autumn (September) are excellent compromises—warming temperatures and still-reasonable daylight without extreme cold.
- February is the coldest month; January has the least precipitation but frozen conditions persist.
- December and January experience extreme daylight scarcity (~6–7 hours), significantly affecting mood and activity planning.
Summer
- Season
- June–August
- Note
- Peak months June–August; typically July is warmest
- Description
- Comfortable and pleasantly warm with partly cloudy conditions; longest daylight hours
Temperature Range
- Unit
- Celsius
- Daytime Avg
- 21
- Daytime Avg F
- 70
- Nighttime Avg
- 10
- Nighttime Avg F
- 50
Winter
- Season
- December–February
- Precipitation Monthly Avg Mm
- 43
- Description
- Long, freezing, snowy, and overcast
- Snowfall Note
- Snowfall is integral; transforms city into winter landscape
Temperature Range
- Unit
- Celsius
- Daytime Avg
- -2
- Daytime Avg F
- 28
- Nighttime Avg
- -7
- Nighttime Avg F
- 19
Daylight
- Note
- Dramatic seasonal variation in daylight hours is characteristic of northern latitude
Longest Day June
- Hours
- 18.2
- Month
- June
Shortest Day December
- Hours
- 6.5
- Month
- December
- Characteristic
- Very cold winters with frequent snowfall; mild to warm summers; significant temperature variation between seasons
- Climate Classification
- Humid continental (Köppen Dfb)
Spring
- Season
- March–May
- Description
- Gradual warming with increasing daylight; moisture begins rising
Best And Worst Times
- Best Months Reason
- Comfortable daytime temperatures (21–23 °C (73°F) / 70–73 °F), longer daylight, more sunshine
- Worst Months Reason
- Extreme cold, brief daylight (6.5 hours), heavy snowfall, minimal sunshine
Best Months
- June
- July
- August
Worst Months
- December
- January
- February
Temperature Extremes
- Record Low C
- -38.6
- Record Low F
- -37.5
- Coldest Month
- February
- Record High C
- 33
- Record High F
- 91
- Warmest Month
- July
- Coldest Month Avg
- -4.5
- Warmest Month Avg
- 18
- Annual Variation C
- 23.7
- Annual Variation F
- 42.6
- Coldest Month Avg F
- 24
- Warmest Month Avg F
- 64
Precipitation And Snowfall
- Driest Month
- March
- Wettest Month
- August
- Driest Month Mm
- 28
- Wettest Month Mm
- 86
- Snowfall Annual Cm
- 87
- Snowfall Annual Inches
- 34
- Annual Precipitation Mm
- 670
- Annual Precipitation Inches
- 26.4
- Note
- Rain falls year-round but never in overwhelming amounts; winter months see precipitation as snow
AI-generated estimateData refreshed July 2026
Sources cited for this category
These are the sources cited in this climate & weather research for this city. Individual figures may not each trace to one of them.
More About Tartu
Data last updated July 2026 · Verify anything important.