August 25 is generally a great time to visit Turku. While there is a slight chance of rain (35%), showers are usually brief. Expect comfortable 19°C weather. As it's peak season for Turku, we recommend booking your stay well in advance to secure the best rates.
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Essential Travel Info for Turku
Currency
EUR
€ Euro
Language
Finnish
+1 more
Driving
Right side
Connect
Students and personnel from participatin...
Safety
Very High Safety
GPI: 1.439
Turku Weather Forecast for August 25
"Mild & Comfortable. Expect average highs of 19.2°C. 35% chance of rain."
What to Wear in Turku in August
Based on historical data for August 25, Turku typically experiences temperatures between 12°C and 19.2°C. We recommend packing light jacket, long pants, umbrella to stay comfortable. With a 35% chance of rain, keeping a raincoat or umbrella handy is a smart move.
Complete Packing Guide
Weekly breakdown & essential items for Turku
Smart Suitcase
- Light Jacket
- Long Pants
- Umbrella
Average High
19.2°C
Daytime Peak
Average Low
12°C
Nighttime Low
Feels Like
19.2°C
🌤️ Feels accurate
Rain Chance
35%
Avg 2.1mm if it rains
Cloud Cover
65%
Overcast
Pressure
1011.6 hPa
High volatility
Turku Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
✓ This date historically delivers consistent weather 79% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
Type I-II
🔴 33 min to burn
Type III-IV
🟡 50 min to burn
Type V-VI
🟢 83 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
15.7°C
Pleasant
Heat Stress
Low
No heat warning
🙂 Best outdoor time:
Any time during daylight hours
Marine Conditions
Marine Life
No special warnings. Enjoy the swim!
Swim Index
⚠️ Mixed Conditions
Travel & Logistics Insights
Local Calendar
Business Day
Standard hours in Finland
Flight Traffic
High
95/100 pressure index
Health Advisory
Required
1 vaccine • View Details →
Landing Slots
~18
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Turku
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
05:08
☀️ Noon
12:34
🌇 Sunset
20:00
⏱️ Daylight
14h 52m
Wind Speed
15.1 km/h
Gentle breeze
Sunshine
10.2 hrs
Direct Sun (Cloud-free)
Humidity
80%
Humid / Damp
Travel Intelligence
Exclusive flight analytics & health data for Turku
Smart Flight Estimator
Airport-to-Airport Logistics
unlock smart flight estimates
Add your home location in settings to see airport details.
Travel Health & Safety in Turku
Travel Comfort Index
Real-time tourism conditions
Weather Quality
⛅ Good
Tourist Crowds
🔴 Very Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Rapid pressure changes detected. High risk for meteosensitive people.
Mild discomfort possible for arthritic conditions.
Fish are active due to pressure changes.
Air quality is excellent. Perfect for outdoor activities.
Regional Safety Profile
Seismic Activity
Zero seismic activity detected in 30 years.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Turku on August 25 averages 19.2°C with a 35% precipitation probability. Wedding/Outdoor Event Score: 90/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Turku Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Better Alternatives Nearby
Consider these dates within ±7 days
August 18
20.5°C • 32% rain
Score
94
August 19
20.3°C • 35% rain
Score
92
August 20
20.1°C • 36% rain
Score
92
💡 Moving your event by a few days could significantly improve weather conditions
Compare Other Cities
Same date (August 25) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Turku Worth Visiting on August 25?
Planning a trip to Turku on August 25? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year is characterized by pleasant mild weather averaging 19.2°C with a 35% historical precipitation risk.
✈️ Travel Logistics: Approximately 18 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 8 vaccinations are recommended for Finland, including COVID-19.
🌊 Coastal Conditions: Water temperature averages 19.2°C (refreshing tonic). Wave conditions are generally lake-like with heights around 0.21m.
📊 Historical Extremes: The hottest August 25 recorded in the last 30 years saw temperatures hit 23.1°C in 2024, while the coldest dropped to 6.8°C in 2025.