Naantali Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Naantali.
Climate overview of Naantali
Temperatures in Naantali, Southern Finland, Finland, vary greatly throughout the year. July is the hottest month at 22°C (72°F), while February is the coldest at 0°C (32°F).
Annual rain/snowfall is moderate at around 722 mm (28 in), with August being the wettest month. The city also has a distinct dry season from March to April, with warm summers and very cold winters. The sunniest month is July, with 9.6 hours of sunshine per day on average.
Naantali Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Naantali - and find the best time to visit.
Monthly Temperature in Naantali
The climate in Naantali is known for significant temperature differences throughout the year, making the weather dynamic. Average daytime temperatures reach a comfortable 22°C (72°F) in July. In February, the coolest month of the year, temperatures drop to a very cold 0°C (32°F).
At night, temperatures range from around 13°C (55°F) in July to -7°C (19°F) in February.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Naantali
Generally, Naantali receives mid-range precipitation levels, with 722 mm (28 in) annually. Naantali experiences moderate seasonal variation in rainfall, with monthly averages ranging from 81 mm (3.2 in) in August, the wettest month, and 38 mm (1.5 in) in April, the driest month. For more details, please visit our Naantali 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 Naantali
Naantali can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 9.6 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 0.9 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit Naantali
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: July and August
- Warmest weather: July and August
- Most sunshine: May, June and July
- Fewest rainy days: April, May and June
- Seasonal pattern: A distinct dry season from March to April, with warm summers and very cold winters
- Coldest conditions: February, with freezing nights around -7°C (19°F).
Frequently asked questions about the climate in Naantali
What is the best time to visit Naantali?
July and August typically offer the most optimal weather in Naantali. In contrast, January, February, March, April, October, November and December tend to have less optimal conditions. Naantali has a distinct dry season from March to April, with warm summers and very cold winters.
What temperatures can I expect in Naantali?
Daytime highs range from 0°C (32°F) in February to 22°C (72°F) in July. Nighttime lows range from -7°C (19°F) to 13°C (55°F). Temperatures vary considerably through the year.
How much rain does Naantali get?
Annual rainfall is around 722 mm (28 in). August is the wettest month with 81 mm (3.2 in), while April is the driest with 38 mm (1.5 in).
How sunny is Naantali?
Naantali receives around 1,843 hours of sunshine per year. July is the sunniest month with 288 hours, while December is the cloudiest with just 28 hours.
Naantali 3-Day Forecast
Naantali 3-Day Forecast
Naantali on the map
Naantali is highlighted - select any city to see its climate.
Popular this month
Where to go in July - average daytime high across popular destinations.
Helsinki
23°C (73°F) Tampere
22°C (72°F) Turku23°C (73°F) Vuokatti21°C (70°F) Rovaniemi21°C (70°F) Äkäslompolo20°C (68°F) Ruka20°C (68°F) Levi20°C (68°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.