Helsinki weather in August
Monthly temperatures, rain, humidity, what to wear and what to pack — 2024–2025 historical average
Helsinki August weather at a glance
In August, Helsinki averages 16.8°C, with typical highs of 19.9°C and lows of 13.6°C. The historical average is 15 wet days and 78% humidity.
Helsinki August temperature & humidity
Helsinki August rain & wet days
Pack a light rain jacket, waterproof pouch and quick-dry shoes. Keep an indoor stop available between outdoor activities.
What to wear in Helsinki in August
T-shirts or long sleeves with one light outer layer should be comfortable. Rain is frequent at roughly 15 days in the month; pack a rain jacket and water-resistant shoes.
- DaytimeLong sleeves and a light jacket · average high 19.9°C
- Morning & eveningLong sleeves with a jacket or cardigan · average low 13.6°C
- FootwearComfortable walking shoes; quick-dry footwear for rainy days.
Packing essentials
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Helsinki August sunrise & sunset times
2026 August · Local time (Europe/Helsinki)
| Date | Sunrise | Sunset | Daylight |
|---|---|---|---|
| 2026-08-01 | 05:00 | 21:52 | 16h 52m |
| 2026-08-15 | 05:33 | 21:14 | 15h 41m |
| 2026-08-31 | 06:12 | 20:28 | 14h 16m |
For sunset photos, arrive before the listed sunset time. Clouds, mountains and buildings can change when the sun becomes visible or disappears.
Calculated for the city coordinates with daylight saving applied. SunCalc · tz-lookup
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Best months to visit Helsinki
Bar height shows our simple weather-comfort score, not a safety rating; colour shows temperature.
August weather by year
Daily weather in 2025
Daily high and low temperatures; blue labels show precipitation
Frequently asked questions
What is Helsinki weather like in August?
In August, Helsinki averages 16.8°C, with typical highs of 19.9°C and lows of 13.6°C. The historical average is 15 wet days and 78% humidity. Our weather-comfort rating for this month is fair.
Does it rain a lot in Helsinki in August?
There are about 15 wet days in August. Pack a rain jacket and water-resistant shoes.
What should I wear in Helsinki in August?
T-shirts or long sleeves with one light outer layer should be comfortable. Rain is frequent at roughly 15 days in the month; pack a rain jacket and water-resistant shoes.
What are the best months to visit Helsinki?
Recent weather data rates May among the more comfortable months.
Where can I check Helsinki weather in August in real time?
Check local webcams for the view right now and a local weather service for today’s forecast. Monthly temperatures here are historical averages.
What time are sunrise and sunset in Helsinki in August?
On 2026-08-15, calculated sunrise is 05:33 and sunset is 21:14 in local time (Europe/Helsinki). Times vary by date and terrain.
Helsinki weather by month
More Europe destinations in August
Open-Meteo (CC BY 4.0) · 2024–2025 historical data, aggregated and rounded by this site. Not a forecast or long-term climate normal. Calculation method and limitations