Savonlinna Weather in September
During September, Savonlinna experiences moderate daytime temperatures of 15°C (59°F) and cooler nights around 8°C (46°F). Expect quite a bit of rainfall. Around 64 mm (2.5 in) is typical.
Rainfall in Savonlinna in September
On average, there are about 19 days with rain during this month, averaging 64 mm (2.5 in). Expect plenty of grey, overcast days rather than intense storms. The rain rarely amounts to much on any given day.
Temperature in Savonlinna in September
September in Savonlinna brings moderate temperatures, with highs of 15°C (59°F) and nights around 8°C (46°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With overnight lows of 8°C (46°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July and August typically offer the best weather for Savonlinna.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Finland, check out our Savonlinna's climate page.
Savonlinna Temperature in September
Min Temperature
8°C (46°F)
Max Temperature
15°C (59°F)
Chance of Rain
62%
Precipitation
64 mm (2.5 in)
Rainy days
19 days
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Savonlinna typically drop from around 16°C (61°F) at the start of September to approximately 10°C (50°F) by the end. Nights are cold, with lows typically ranging from 3°C (37°F) to 9°C (48°F).
Average temperatures in September
Historical weather for Savonlinna in September
Browse day-by-day weather records for Savonlinna spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Savonlinna historical weather extremes in September
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Savonlinna.
- Savonlinna recorded its highest September temperature of 25°C (77°F) on September 4, 2024.
- On September 26, 1986, Savonlinna saw its coldest September day with temperatures maxing out at 1°C (34°F).
- The coldest night in September in Savonlinna was on September 27, 1978, with a minimum of -6°C (21°F).
Best Places in Finland in September
Find out more about the weather in Finland and which places have the best travel conditions in this month. See all of Finland in September →
perfect weather
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unpleasant
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What to Wear in Savonlinna in September
The weather can swing between comfortable and chilly in September, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Wet weather is likely, so pack waterproof gear for multiple rainy days.What To Do in Savonlinna 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 Finland, check out our Savonlinna's climate page.
See the full Savonlinna climate overview or explore weather in Finland.
