Climate in Pärnu

Pärnu, Estonia has a subarctic climate. The annual average temperature is about 2.2°C and the city receives roughly 680 mm of precipitation across 75 rainy days a year, with around 1916 hours of sunshine. The warmest month is Jul (highs near 19.2°C) and the coldest is Jan (lows near -14.9°C). These are deterministic, latitude- and region-based planning estimates — not a forecast or measured station data; check current conditions with an official meteorological service before travel.

Data year 2025; last updated 2026-05-16.

Pärnu is classified as Subarctic. This reflects its annual temperature range and the seasonal pattern of its rainfall.

Pärnu receives about 680 mm of precipitation a year over roughly 75 rainy days. The wettest month is Jun and the driest is Jan.

Pärnu sees an estimated 1916 hours of sunshine a year, concentrated in the warmer months around Jul.

By temperature and rainfall, the most comfortable months in Pärnu are Jul, Aug, Jun. Conditions vary year to year — verify with a current forecast before booking.

Pärnu has a climate comfort score of 56/100, a moderate year-round climate by this measure. The score weights mild temperatures most, then rainfall balance, sunshine, low seasonality, and the absence of extreme winter cold or summer heat.