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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.
Kotka Weather in August
Kotka in August sees pleasant temperatures, with highs around 21°C (70°F) and overnight lows of 14°C (57°F). Rainfall is fairly high at around 72 mm (2.8 in) on average, so pack waterproofs just in case.
Rainfall in Kotka in August
Analyzing past climate data, one can expect approximately 15 days of rain, averaging 72 mm (2.8 in). The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Kotka in August
Kotka in August has excellent weather. Days reach 21°C (70°F) and nights cool to 14°C (57°F). August is typically considered a summer month. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. At 14°C (57°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.If your ideal day consists of dry skies and pleasant temperatures, July and August typically offer the best circumstances for Kotka.
Kotka Temperature in August
Min Temperature
14°C (57°F)
Max Temperature
21°C (70°F)
Chance of Rain
49%
Precipitation
72 mm (2.8 in)
Rainy days
15 days
Kotka Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Kotka - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Kotka typically drop from around 21°C (70°F) at the start of August to approximately 17°C (63°F) by the end. Nights are cool, with lows typically ranging from 12°C (54°F) to 16°C (61°F).
Average temperatures in August
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 August
Historical weather records for Kotka in August
Browse day-by-day weather records for Kotka spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Kotka historical weather extremes in August
The extremes listed below come from historical weather data collected in Kotka from 1976 through 2026.
- The warmest day in August was on August 8, 2010, with a maximum of 29°C (84°F).
- The coldest August day was on August 31, 1987, with a maximum of 11°C (52°F).
- The lowest overnight temperature recorded in August was 4°C (39°F) (August 16, 1984).
Best Places in Finland in August
Find out more about the weather in Finland and which places have the best travel conditions in this month. See all of Finland in August →
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 Kotka in August
Pleasant temperatures in August mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days.
What To Do in Kotka in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling9/10 -
Walking9/10 -
Camping8/10 -
Outdoor sports9/10
Kotka 3-Day Forecast
More climate data for Kotka
See the full Kotka climate overview or explore weather in Finland.
Popular in August
Where to go in August - average daytime high across popular destinations.
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