August · typical climate, not a forecast
Helsinki in August
Finland
Solid escape
20°C day · 15°C night · 35% rain · 15h daylight · moderate crowds · €1,065 estimated
Live · Helsinki
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Live · Tallinn (you)
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Cool Score breakdown
Scored for 5 nights from Tallinn in August.
- Temperature fit83
20.4°C typical high vs your 12–20°C window
w 26 - Heat escape1
0.1°C cooler than Tallinn
w 14 - Rain probability83
35% chance of rain on an average day
w 11 - Daylight hours93
15.4h of daylight mid-month
w 8 - Outdoor conditions82
Comfortable for a full day outside at 20.4°C
w 10 - Crowding45
Moderate crowds for this month
w 8 - Flight + stay cost79
≈€1065 estimated for 5 nights vs €1000 budget
w 12 - Nature access70
7/10 — wild ground within reach
w 6 - City atmosphere90
9/10 urban texture · 9/10 food scene
w 4
Why Helsinki in August
Baltic water keeps the evenings brisk even in a warm week.
- Island saunas
- Design district
- Archipelago ferries
What August in Helsinki is actually like
In August, Helsinki sits around 20°C by day and drops to about 15°C after dark, so a light layer earns its place in the bag even in high summer. That is roughly 0°C cooler than Tallinn at the same time of year — the difference between planning your day around the shade and simply walking out of the door.
Expect rain on roughly 35% of days, usually passing rather than persistent, and about 15 hours of daylight to spend outside. Crowds are moderate crowds this month, and a 5-night trip from Tallinn works out at around €1,065 including flights, a mid-range stay and everyday spending.
Baltic water keeps the evenings brisk even in a warm week. Days here tend to fill up with island saunas, design district, archipelago ferries — which is why Helsinki scores 68 out of 100 for august: solid escape.
Other months
Compare the typical climate month by month.