September · Estonia
Best time to visit Pärnu in September Weather, crowds & prices
Weather in Pärnu in September
Average temperature 14°C, 49 mm of rain, about 5 days with 6+ hours of sunshine and 80% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
3.5/10
Ranked #6 of 12 months
- Avg temp
- 14°C
- Rainfall
- 49 mm
- Humidity
- 80%
- Days with 6h+ sun
- 5
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in Pärnu scores 3.5/10 for beach and coastal travel - an above-average month (#6 of 12). Expect around 14°C, 49 mm of rain, and roughly 5 days with 6+ hours of sunshine this month.
Pärnu is Estonia's summer capital, with a long sandy beach, spa hotels and a river promenade.
September in Pärnu — the hardest end of the year
September averages 14°C (58°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 49 mm, so plan one flexible day in three; you still get about 5 days with 6+ hours of sunshine and 12.5 hours of daylight.
It scores 3.5/10 here, 6th of 12 months, against 7.1/10 in the destination's best month.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
Plan for low-season pricing, with crowds are light for this destination. That combination — decent conditions at the lowest rates of the year — is the best value window on this page.
Flexible dates? June scores 3.6 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Pärnu in September?
- In September, Pärnu averages 14°C, 49 mm of rain, and about 5 days with 6+ hours of sunshine. Its climate-comfort score is 3.5/10.
- Is September a good time to visit Pärnu?
- September earns a 3.5/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Pärnu in September?
- Expect about 49 mm of rain in September. Average humidity is 80% and there are about 5 days with 6+ hours of sunshine.
Curated in Pärnu
Tickets & experiences
Things to do in Pärnu
Pärnu, Estonia. Live activities and tours from GetYourGuide, matched to this destination.