Jämsä Weather in August
August in Jämsä typically sees daytime highs of 21°C (70°F) and nighttime lows of 12°C (54°F). Rainfall is also possible this month, so it's worth packing an umbrella. It falls within the summer season.
Rainfall in Jämsä in August
Climate statistics over the past 30 years suggest around 17 days of rain, with 81 mm (3.2 in) average for the month. Rain is frequent but mostly light this month, with brief showers more common than heavy downpours.
Temperature in Jämsä in August
August is one of the better months to visit Jämsä. Expect 21°C (70°F) during the day and 12°C (54°F) at night. August is a notable month of the summer season. Conditions are often most pleasant around the middle of the day. Nights drop to around 12°C (54°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.If you're a fan of comfortable temperatures and drier conditions, August is a great time to visit.
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 Jämsä's climate page.
Jämsä Temperature in August
Min Temperature
12°C (54°F)
Max Temperature
21°C (70°F)
Chance of Rain
55%
Precipitation
81 mm (3.2 in)
Rainy days
17 days
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Jämsä typically drop from around 21°C (70°F) at the start of August to approximately 16°C (61°F) by the end. Nights are cool, with lows typically ranging from 9°C (48°F) to 13°C (55°F).
Average temperatures in August
Daily Historical Precipitation
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for Jämsä in August
Browse day-by-day weather records for Jämsä spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Jämsä historical weather extremes in August
Based on 26 years of weather observations in Jämsä between 1999 and 2025, these are the recorded extremes.
- The warmest day in August was on August 1, 2018, with a maximum of 31°C (88°F).
- The lowest daytime temperature in August was 9°C (48°F), recorded on August 29, 2007.
- The coldest night in August in Jämsä was on August 25, 2004, with a minimum of 1°C (34°F).
- The wettest day in August Jämsä was on August 30, 2024 with 44 mm (1.7 in) of precipitation.
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
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tolerable
unpleasant
poor
What to Wear in Jämsä in August
For Jämsä in August, 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. High rain levels are expected, so pack waterproof gear and an umbrella or poncho.What To Do in Jämsä in August
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 Jämsä's climate page.
See the full Jämsä climate overview or explore weather in Finland.
