Turku weather and climate
Turku weather and climate
Day
-1 °C
Night
-7 °C
Sea
2 °C
Precipitation
54 mm
in month
Rainy days
12 days
in month
Daylight
6 hours
average
Sunshine
1 hours
average
Humidity
88 %
Day
-1 °C
Night
-7 °C
Sea
2 °C
Precipitation
54 mm
in month
Rainy days
12 days
in month
Daylight
6 hours
average
Sunshine
1 hours
average
Humidity
88 %
Overview: Turku
Travel information
Weather charts for Turku
We make the most from 40 years of historical weather data to predict the best weather conditions.
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Weather overview for Turku
Weather overview
Turku, Finland typically experiences a temperate continental climate. Average daytime temperatures fluctuate between a chilly -2 °C (29 °F) in the heart of winter to a warm 23 °C (73 °F) at the height of summer. Nighttime temperatures peak in July at a comfortable 13 °C (55 °F) and plunge to their lowest in February, hitting a frigid -8 °C (18 °F). The driest month is May, presenting only 7 days full of rain, whereas the wettest period falls in December with a significant 13 days of precipitation.
January weather
In January, the daytime temperature keeps decreasing, settling at -1 °C (29 °F) in Turku, while the nighttime temperature continues its downward trend, dropping to -7 °C (20 °F). The quantity of rainy days marks the onset of a decrease at 12 days, paralleling a decline in rainfall volume at 54 mm (2.14 in). Maximum wind speeds are achieved this month.
February weather
February brings the coldest daytime temperatures in Turku, coupled with equally low nighttime temperatures. The reduction of rainy days continues as observed in the previous month, with a count of 10 days, and rainfall volume also shows a decline. Sun hours without cloud cover start to increase.
March weather
March witnesses a modest rise in daytime temperatures to 2 °C (36 °F) in Turku, and a gentle upward trend in nighttime temperatures is also noticeable. The frequency of rainy days continues to decrease. The lengthening of sun-filled hours continues, now averaging 4 hours.
April weather
With the continuing rise in April's daytime temperature reaching 9 °C (48 °F), Turku's number of rainy days and rainfall amount both hit yearly lows. The dry season is upon us, and the amount of sunshine increases to 6 hours.
May weather
Daytime temperatures keep climbing in May, averaging 16 °C (61 °F) in Turku, with nighttime temperatures warming to 5 °C (41 °F). The tourist season is on the rise, as is the dry season with minimal rainy days.
June weather
As the tourist season flourishes in June, Turku enjoys increasing day temperatures averaging 20 °C (68 °F), with night temperatures also rising. The count of rainy days begins to climb slightly.
July weather
July boasts the apex of daytime temperatures at 23 °C (73 °F) in Turku, and nighttime temperatures also peak. Rainy days continue to increase, and the amount of solar exposure begins to wane.
August weather
Turku's tourist season remains prominent in August. The commencement of the decline in daytime temperatures is noticeable, as is the start of the drop in nighttime temperatures. The quantity of rainy days increases, along with a rise in rainfall volume.
September weather
September's temperatures in Turku follow a declining trajectory reminiscent of the prior months. With the start of a downward trend in rainfall volume, the number of sunny hours also decreases.
October weather
The decline in daytime temperatures continues with October's temperatures in Turku, and similar reductions are seen during nighttime. The number of rainy days begins to amplify, and rainfall reaches its peak while the sun's presence diminishes.
November weather
Turku's daytime temperatures maintain their downward trend in November, as do nighttime temperatures. The rainy days sustain their surge from the previous month, and rainfall volume begins its decrease, though still substantial.
December weather
With December's temperature further decreasing, Turku experiences some of its coldest days, and the nights grow even colder. The quantity of rainy days hits its annual summit, and sun hours reach their scarcest.
FAQs
What is the average wind speed in Turku during January?
In January, the average wind speed in Turku reaches its peak at 5 m/s, suggesting brisk conditions that require windproof attire for outdoor activities.
How does sunlight duration change in February in Turku?
Sunlight duration in Turku begins to extend in February, with sun hours without clouds increasing to an average of 2 hours.
What's the trend in humidity during March in Turku?
March sees a declining trend in relative humidity, with an average of 83 % indicating drier conditions compared to the winter months.
How does the length of daylight change in April in Turku?
The length of daylight extends significantly in April, with days lasting about 14 hours on average, illuminating Turku for longer periods.
What can one expect in terms of humidity during May in Turku?
In May, one can expect Turku's atmosphere to contain lower humidity levels, averaging around 69 %, which contributes to the overall comfort of the seasonal climate.
What is the trend for sea temperatures in June in Turku?
June presents a rising trend for sea temperatures, warming up to a cool 11 °C (52 °F), which may still be too brisk for most beachgoers.
How does July in Turku fare in terms of sun hours?
While enjoying peak summer in July, Turku offers abundant sun hours, averaging 8 hours of sun without clouds, making it ideal for outdoor summer activities.
Is there an increase in precipitation during August in Turku?
Yes, precipitation begins to intensify in August, with an increasing number of wet days totaling to about 10 days, indicating a greater likelihood of rainfall.
What's the state of the wind speeds in September in Turku?
September's wind speeds in Turku start to see an uptick, averaging 5 m/s, adding a nippy edge to the atmosphere.
How does Turku’s day length vary in October?
Day length in Turku begins to wane noticeably in October, averaging just 10 hours, signaling the approach of the darker months.
Is the decline in rainfall significant in November in Turku?
November marks the start of a lessening in rainfall volume, with the amount descending to 69 mm (2.70 in), reflective of a gradual shift toward drier conditions.
What is the condition of sun exposure in December in Turku?
In December, sun exposure in Turku dwindles to its lowest, with an average of only 1 hour of sun without clouds each day, casting long stretches of darkness.