In general the best time to visit Turku is probably July, when the weather is usually great. The hottest months are June, July, August, while the coldest months are January, February, December.
April, May, June, July usually has good weather. Average maximum temperature reaches +21°C during July.
In January, February, March, August, September, October the weather is average. Expect around 54 rainy days, and the precipitation amounts to approximately 75 mm in August.
November, December bring not the best weather. December is the coldest month with the temperature going down to -4°C.
Climate in Turku
Here is the detailed breakdown of the climate in Turku for each month:
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Maximum Temperature
+9°C
+9°C
+14°C
+22°C
+28°C
+31°C
+33°C
+31°C
+24°C
+17°C
+14°C
+11°C
Average Maximum Temperature
-2°C
-2°C
+2°C
+8°C
+14°C
+19°C
+21°C
+20°C
+15°C
+9°C
+4°C
+1°C
Minimum Temperature
-36°C
-32°C
-22°C
-11°C
-5°C
0°C
+5°C
+3°C
-3°C
-12°C
-18°C
-23°C
Avg. water temperature
+3°C
+1°C
0°C
+2°C
+9°C
+16°C
+22°C
+23°C
+19°C
+13°C
+9°C
+6°C
Humidity, %
88
87
80
72
67
69
72
77
82
85
89
89
Rain, mm
13
8
9
24
36
48
61
75
56
60
45
26
Snow, mm
36
27
26
9
1
0
0
0
0
4
17
30
Average wind speed, m/s
3
3
3
3
3
3
3
3
3
4
3
3
Sunny Days
3
5
7
9
12
10
9
7
6
4
2
3
Cloud Days
12
11
10
8
7
6
4
6
9
11
11
11
Rainy Days
3
2
2
9
12
13
16
17
15
15
10
5
Snowy Days
13
11
11
4
0
0
0
0
0
1
7
12
Average Temperature
Here are the average maximum and minimum temperatures in Turku during the whole year:
The hottest month in Turku is July with average maximum temperature going up to +21°C. The coldest month is January with the lowest temperatures of -6°C.
Water temperature
Here are the water temperatures in Turku during the whole year:
Turku achieves its warmest water temperature in August, where the average sea temperature goes up to +14°C. Coldest water temperature is in February with 0°C in average.
Humidity
The temperature feels different depending on humidity. Here is how humidity in Turku looks throughout the year, in %:
The most humid month in Turku is December with average humidity going up to 89%. The least humid month is May with an average humidity of 67%.
Rain
Amount of rainfall in mm. in Turku during the whole year based on historical data:
The sunniest and driest month is May with approximately 12 sunny days and a total precipitation of around 36 mm. The rainiest and wettest month is August with approximately 17 rainy days and 75 mm of total precipitation.
Snow
Amount of snow in mm. in Turku during the whole year based on historical data:
The snowiest month is January with approximately 13 snowy days.
FAQ
Frequently asked questions about the weather in Turku:
What is the hottest month in Turku?
The hottest month in Turku is July with average maximum temperature of +21°C.
What is the coldest month in Turku?
The coldest month in Turku is January with minimum temperatures of -6°C.
Is Turku worth visiting in winter?
Winter in Turku could be a good time to visit, as the weather is generally ok.
When does it rain the least in Turku?
if you're looking to visit Turku when it rains the least, you should plan your trip for August, July, October. During this time, rainfall is rare with the driest month being February with only 8 mm of rain.
Other cities in Finland
Check out the weather for other cities in Finland.
For this page, we’ve looked at the typical weather in Turku, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.