Pärnu weather by month
The best time to visit Pärnu is June to August — 88/100 in July, 23°C and 11 rainy days. The best season is summer, June to August (85/100 on average).
The worst month is January at 24/100 — freezing, a little rain, clean air. See January →
Updated September 2026 · climate normals from ERA5 reanalysis
Planning the wider trip? Best time to visit Estonia →
Best season: June to August (85/100 on average) · worst January (24/100)
- Days
- 23°C
- Nights
- 15°C
- Wet days
- 11
- Sun
- 12.8 h
- Humidity
- 74%
- Daylight
- 18 h

Pärnu, month by month
Comfort score out of 100 for the kind of trip Pärnu is best for, the average high, rainy days and hours of sun a day from the climate normals, and how busy it tends to be.
What's on in Pärnu through the year
Festivals, natural spectacles, holidays and the seasons to watch out for — curated and sourced. The month pages carry the detail.
Crowds in Pärnu in July
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusyEstonia's summer capital, school holidays in 7 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Traveller notes on Pärnu
What people who have been say about the place — the year-round notes first, then month by month.
Forum posters describe June across Estonia as genuinely hit or miss, even around midsummer - a lucky visitor gets blue skies and T-shirt weather, an unlucky one gets sleet, with July generally the more reliably warm month. Posters are consistent that any June rain tends to come as passing showers rather than prolonged, driving rain. Posters specifically flag a real upside for Parnu: the sea here runs 5-7C warmer than in Tallinn through June-August, a meaningful difference for anyone hoping for a swim. Posters generally recommend Parnu as a good base for exploring western Estonia if the weather turns inclement and a car isn't available, given its concentration of things to do compared to more spread-out surrounding areas.
Estonia's forum is realistic about December: subzero temperatures are common but not constant, this is the darkest stretch of the year, and rain is honestly just as likely as snow - a lot of December here means slush rather than a clean white blanket. Wind varies a lot day to day, from calm to blustery, so there's no single pattern to plan around. Pärnu's own beach town character goes fully dormant this time of year, but the coastal chill and short daylight hours are consistent with what the wider Baltic region sees this month.
Add your own note from Pärnu's card on the map.