Finland
Turku in August: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Turku in August is climatically well suited to city breaks and active holidays and hiking. The average daily high is around 21 °C, and the sea is about 17 °C. With about 13 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
61/100 · #2
Warmth
#2
Dryness
#7
Sun
#4
Sea warmth
#1
Published best categories: Overall, City break, Active
Turku · AugustPhoto: Kotivalo · CC0Climate facts
- Average high
- 21 °C
- Average low
- 12 °C
- Sea
- 17 °C
- Rainy days (est.)
- 13 rainy days (est.)
- Sun (est.)
- 5 h/day
- Humidity
- 79 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| July | 22 | 13 | 13 | 64 | 6.5 | 77 | 0.5 | 16 | 62 |
| August (selected) | 21 | 12 | 13 | 75 | 5.1 | 79 | 0.6 | 17 | 61 |
| September | 16 | 8 | 11 | 61 | 3.1 | 84 | 0.6 | 14 | 44 |
How do the previous and next months compare?
Baseline: August (61/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| July | +1 | +1 °C | +0.5 °C | +0.3 | -10.7 mm | +1.4 h | -2 % | -0.1 m/s | -0.8 °C |
| September | -17 | -5 °C | -4 °C | -2.1 | -14.3 mm | -2 h | +4.9 % | +0.1 m/s | -2.9 °C |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Turku in August?
The average daily high is around 21 °C, with an average daily low of about 12 °C.
Can you swim in Turku in August?
The sea is about 17 °C (cold).
Does it rain a lot in Turku in August?
The curated estimate is about 13 rainy days per month, not a directly measured long-term average. Total precipitation averages around 75 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Turku?
By the climate score, July and August are the strongest months for Turku. August is one of them.