September · Estonia
Best time to visit Tallinn in September Weather, crowds & prices
Weather in Tallinn in September
Average temperature 14°C, 67 mm of rain, about 24 days with 6+ hours of sunshine and 81% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
8.3/10
Ranked #3 of 12 months
- Avg temp
- 14°C
- Rainfall
- 67 mm
- Humidity
- 81%
- Days with 6h+ sun
- 24
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Tallinn scores 8.3/10 for sightseeing and cultural travel - one of the top 12-month picks (#3). Expect around 14°C, 67 mm of rain, and roughly 24 days with 6+ hours of sunshine this month.
Tallinn's medieval walls, towers and merchant houses make it the best-preserved Hanseatic capital.
September in Tallinn — reliably good (3rd best month)
September averages 14°C (56°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 67 mm, so plan one flexible day in three; you still get about 24 days with 6+ hours of sunshine and 12.8 hours of daylight.
It scores 8.3/10 here, 3rd of 12 months, against 9.2/10 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 mid-season pricing, with crowds are moderate.
Frequently asked
- What is the weather like in Tallinn in September?
- In September, Tallinn averages 14°C, 67 mm of rain, and about 24 days with 6+ hours of sunshine. Its climate-comfort score is 8.3/10.
- Is September a good time to visit Tallinn?
- September earns a 8.3/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Tallinn in September?
- Expect about 67 mm of rain in September. Average humidity is 81% and there are about 24 days with 6+ hours of sunshine.
Curated in Tallinn
Tickets & experiences
Things to do in Tallinn
Tallinn, Estonia. Live activities and tours from GetYourGuide, matched to this destination.