Tallinn Weather in September
Thinking of visiting Tallinn in September? Expect moderate temperatures reaching 17°C (63°F) during the day, dropping to 9°C (48°F) at night, and note that quite a bit of rainfall is likely.
Rainfall in Tallinn in September
Typically, about 17 days will experience rainfall, with an average of 68 mm (2.7 in) for the month. With rain spread across many days but low totals, showers are typically short and light rather than heavy.
Temperature in Tallinn in September
September in Tallinn brings moderate temperatures, with highs of 17°C (63°F) and nights around 9°C (48°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights drop to 9°C (48°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in Tallinn in September
The month experiences a moderate amount of sunlight, with 163 hours of sunshine. This provides a nice balance between sunshine and clouds.
Wind Speed in Tallinn in September
Average wind conditions reach 5 m/s (10 knots) in September. This creates lively weather with fresh winds that make small trees sway noticeably. Remember this is an average: some days are less windy while others have particularly active windy conditions.If you prefer enjoying temperate temperatures and rain-free days, July and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Estonia, check out our Tallinn's climate page.
Tallinn Temperature in September
Min Temperature
9°C (48°F)
Max Temperature
17°C (63°F)
Chance of Rain
57%
Precipitation
68 mm (2.7 in)
Rainy days
17 days
Humidity
82%
Windspeed
5 m/s (10 knots)
Sunshine
163 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Tallinn typically drop from around 17°C (63°F) at the start of September to approximately 13°C (55°F) by the end. Nights are cool, with lows typically ranging from 6°C (43°F) to 11°C (52°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Tallinn in September
Browse day-by-day weather records for Tallinn spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Tallinn historical weather extremes in September
Based on weather observations in Tallinn between 1976 and 2025, these are the recorded extremes during September.
- Tallinn recorded its highest September temperature of 27°C (81°F) on September 4, 2024.
- The coldest September day was on September 25, 1978, with a maximum of 5°C (41°F).
- The coldest night in September in Tallinn was on September 30, 1993, with a minimum of -4°C (25°F).
Best Places in Estonia in September
Find out more about the weather in Estonia and which places have the best travel conditions in this month. See all of Estonia in September →
perfect weather
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tolerable
unpleasant
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What to Wear in Tallinn in September
For Tallinn in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Tallinn in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Estonia, check out our Tallinn's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Tallinn climate overview or explore weather in Estonia.
