Air Guitar World Championship Finland
This is something you might want to add to your bucket list. August is also the perfect time to visit Finland. The days are long and the temperature is amazing.
Kouvola Weather in September
Kouvola in September sees moderate temperatures, with highs around 16°C (61°F) and overnight lows of 8°C (46°F). Rainfall is fairly high at around 60 mm (2.4 in) on average, so pack waterproofs just in case.
Rainfall in Kouvola in September
Typically, you can expect about 17 days of rain this month, with 60 mm (2.4 in) on average. With rain spread across many days but low totals, showers are typically short and light rather than heavy.
Temperature in Kouvola in September
September in Kouvola brings moderate temperatures, with highs of 16°C (61°F) and nights around 8°C (46°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. 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.If you prefer dry days with pleasant temperatures, June, 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.
Kouvola Temperature in September
Min Temperature
8°C (46°F)
Max Temperature
16°C (61°F)
Chance of Rain
55%
Precipitation
60 mm (2.4 in)
Rainy days
17 days
Kouvola Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Kouvola - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Kouvola typically drop from around 17°C (63°F) at the start of September to approximately 11°C (52°F) by the end. Nights are cold, with lows typically ranging from 5°C (41°F) to 10°C (50°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 records for Kouvola in September
Browse day-by-day weather records for Kouvola spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Kouvola historical weather extremes in September
According to our 50 years of weather records for Kouvola, the following extremes were recorded between 1976 and 2026.
- On September 4, 2024, temperatures climbed to 27°C (81°F), marking the warmest September day on record.
- Kouvola experienced its chilliest September day on September 23, 2014, reaching only 3°C (37°F).
- The coldest night in September in Kouvola was on September 30, 1993, with a minimum of -4°C (25°F).
- The heaviest September precipitation occurred on September 28, 2012, when 28 mm (1.1 in) of precipitation fell.
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
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Kouvola in September
Pack for changing conditions in Kouvola 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 Kouvola in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling6/10 -
Walking6/10 -
Barbeque5/10 -
Camping4/10 -
Outdoor sports10/10
Kouvola 3-Day Forecast
More climate data for Kouvola
See the full Kouvola climate overview or explore weather in Finland.
Popular in September
Where to go in September - average daytime high across popular destinations.
Helsinki
16°C (61°F) Turku17°C (63°F) Tampere
15°C (59°F) Vuokatti
13°C (55°F) Rovaniemi13°C (55°F) Äkäslompolo12°C (54°F) Ruka12°C (54°F) Levi12°C (54°F) Bucket list
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