Climate in Pärnu, Estonia

Pärnu, Estonia has a subarctic climate. The annual average temperature is about 2.2°C, with around 1916 hours of sunshine; the national rainfall baseline is roughly 680 mm across 75 rainy days a year. The warmest month is Jul (highs near 19.2°C) and the coldest is Jan (lows near -14.9°C). These are deterministic planning estimates, not a forecast or measured station data. Temperature and sunshine follow the city's latitude; rainfall and the climate zone come from a country-level baseline that every city in the country shares (refined by region in the United States, Canada and Australia), so they do not show local differences. Check current conditions with an official meteorological service before travel.

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

Pärnu is classified as Subarctic. The classification combines the city’s own temperature range, which follows its latitude, with a rainfall pattern taken at country level for Estonia — so cities in the same country usually share a zone.

The rainfall baseline for Estonia is about 680 mm a year over roughly 75 rainy days, with the wettest month Jun and the driest Jan. This figure is not specific to Pärnu: every city in Estonia carries the same baseline, so it will not show the difference between, say, a dry inland city and a wet coastal one. Use an official meteorological service for local rainfall.

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.