Climate Chart of Tallinn, Estonia

Monthly data: Temperature °C, Rain (mm), Sunshine (h) · 2013–2023

Climate overview

Temperature

The monthly mean temperature is lowest in January at -2.7 °C, and highest in July at 17.9 °C. Those figures describe monthly averages, not daytime highs or the range of temperatures visitors may encounter from one day to another. The unweighted mean across the calendar-month means is 7.1 °C, a useful broad summary rather than a day-weighted annual average.

Rain

Mean daily rainfall is lowest in March at 0.53 mm/day, while its highest monthly mean occurs in August at 3.02 mm/day. The unweighted mean of the monthly means is 1.52 mm/day. These are daily average amounts, not monthly totals; they do not show how often rain falls or guarantee that a particular day will be dry or wet.

Sunshine

Average daily sunshine reaches its highest monthly mean in June at 13.61 hours/day, and its lowest in December at 0.99 hours/day. The unweighted mean across monthly sunshine means is 7.23 hours/day. These figures describe average sunshine duration, not daylight length, and daily conditions can differ from the monthly average.

Snow

The highest monthly mean for daily snowfall is recorded in January, at 8.20 mm/day; the unweighted mean across monthly means is 2.73 mm/day. These are average daily amounts, not monthly totals, and they do not establish how many days have snowfall, how deep snow may be, or whether snow cover persists.

Best Travel Time Guide for Tallinn, Estonia: Ideal Seasons and Weather Insights

For travel weather, March is a conditional option if your priority is lower average daily rainfall, at 0.53 mm/day; it does not guarantee dry days or indicate how frequently rain occurs. If visiting during August, when the mean daily rainfall is 3.02 mm/day, carrying rain-ready layers is a practical precaution, while the average still cannot predict the weather on your dates. Visitors prioritising cooler monthly averages can use January, with a monthly mean of -2.7 °C, as a point of reference rather than a forecast for daytime conditions. For outdoor sightseeing planned around average sunshine duration, June has the highest monthly mean at 13.61 hours/day; sunshine duration is not the same as daylight length, and neither average guarantees clear skies. In January, mean daily snowfall reaches 8.20 mm/day. This average may help visitors consider winter-weather preparation, but it cannot establish the number of snowy days, snow depth, lasting snow cover, or conditions for skiing.

Climate Data Overview for Tallinn, Estonia

Explore the comprehensive climate data for Tallinn, Estonia. This detailed table provides valuable insights into temperature variations, precipitation levels, and seasonal changes, helping you understand the unique weather patterns of this region.

• See also climate change in Tallinn
• Explore the climate in Estonia