Sastamala Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Sastamala.
Climate overview of Sastamala
Sastamala, Western Finland, Finland, experiences significant temperature variation throughout the year. Summers bring daytime highs of 23°C (73°F) in July, while winters cool to -1°C (30°F) in February.
With around 712 mm (28 in) of annual rain/snowfall, the city has moderate precipitation levels. July is the wettest month and March the driest. It also has warm summers and very cold winters. June is the sunniest month, averaging 9.2 hours of sunshine per day.
Sastamala Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Sastamala - and find the best time to visit.
Monthly Temperature in Sastamala
Depending on the time of the year, temperatures range from comfortable to very cold in Sastamala. Typically, average maximum daytime temperatures range from a comfortable 23°C (73°F) in July to a very cold -1°C (30°F) in the coolest month, February.
Nights vary from 13°C (55°F) in July to around -9°C (16°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Sastamala
Generally, Sastamala has a moderate amount of precipitation, averaging 712 mm (28 in) of rain/snowfall annually. The climate in Sastamala shows significant variation throughout the year. Expect moderate rainfall in July, the wettest month, with an average of 89 mm (3.5 in) of precipitation over 16 rainy days.
In contrast, the driest month March offers drier and sunnier days, with around 39 mm (1.5 in) of snow/rainfall over 15 snowy/rainy days. For more details, please visit our Sastamala Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Sastamala
For those who appreciate different seasons, Sastamala serves as an ideal destination. Expect longer, more sun-filled days in June with an average of 9.2 hours of sunshine daily, and embrace the darker days in December, offering only 0.9 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit Sastamala
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, July and August
- Warmest weather: July and August
- Most sunshine: June
- Fewest rainy days: April, May and June
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: February, with freezing nights around -9°C (16°F).
Frequently asked questions about the climate in Sastamala
What is the best time to visit Sastamala?
June, July and August typically offer the most optimal weather in Sastamala. In contrast, January, February, March, April, October, November and December tend to have less optimal conditions. Sastamala has warm summers and very cold winters.
What temperatures can I expect in Sastamala?
Daytime highs range from -1°C (30°F) in February to 23°C (73°F) in July. Nighttime lows range from -9°C (16°F) to 13°C (55°F). Temperatures vary considerably through the year.
How much rain does Sastamala get?
Annual rainfall is around 712 mm (28 in). July is the wettest month with 89 mm (3.5 in), while March is the driest with 39 mm (1.5 in).
How sunny is Sastamala?
Sastamala receives around 1,662 hours of sunshine per year. June is the sunniest month with 276 hours, while December is the cloudiest with just 27 hours.
Sastamala 3-Day Forecast
Sastamala on the map
Sastamala is highlighted - select any city to see its climate.
Popular this month
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
Need travel inspiration? Check out our bucket list articles and be inspired.
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.
Sleeping in a glass iglo in Finland
Sleeping in a glass igloo with the Northern Lights shining above you. The most famous place is in the Iglo village in Kakslattaunen. The idea is amazing and definitely something to add to your bucket list.
See the northern lights
The northern lights, polar light or Aarora Borealis is a true spectacle of nature! Green, sometimes purple, red and yellow streaks of light colors the dark skies.