Rauma Weather in September
September in Rauma brings moderate temperatures around 16°C (61°F) during the day, dropping to 10°C (50°F) at night, with quite a bit of rainfall expected, averaging around 71 mm (2.8 in) for the month.
Rainfall in Rauma in September
This month experiences about 16 days of rain according to historical data, averaging 71 mm (2.8 in). Rain falls on many days this month, but usually in relatively small amounts. A light waterproof is more useful than a heavy umbrella.
Temperature in Rauma in September
Expect highs of 16°C (61°F) in Rauma in September, with nights dropping to around 10°C (50°F). The difference between afternoon and evening temperatures is usually noticeable. Nights cool down to 10°C (50°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.If you prefer dry days with pleasant temperatures, 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 Finland, check out our Rauma's climate page.
Rauma Temperature in September
Min Temperature
10°C (50°F)
Max Temperature
16°C (61°F)
Chance of Rain
53%
Precipitation
71 mm (2.8 in)
Rainy days
16 days
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Rauma typically drop from around 17°C (63°F) at the start of September to approximately 12°C (54°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
Historical weather for Rauma in September
Browse day-by-day weather records for Rauma spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Rauma historical weather extremes in September
According to our 49 years of weather records for Rauma, the following extremes were recorded between 1976 and 2025.
- The hottest September day on record in Rauma reached 24°C (75°F) (September 2, 1991).
- The lowest daytime temperature in September was 4°C (39°F), recorded on September 28, 1976.
- Nighttime temperatures dropped to -6°C (21°F) on September 30, 1976, marking the coldest September night on record.
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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What to Wear in Rauma in September
Pack for changing conditions in Rauma in September. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Rain gear is recommended, you can expect wet weather on multiple days.What To Do in Rauma 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 Rauma's climate page.
See the full Rauma climate overview or explore weather in Finland.
