Finland Helsinki Weather in August (summer + Helsinki Festival) — Climate Guide
August (summer + Helsinki Festival) in Helsinki is Festive
Helsinki Weather in August (summer + Helsinki Festival) — Quick Answer
As of 2026- Avg temp
- 19° / 12°
- Rainfall
- 79mm · 13 days
- Crowds
- Very busy
As of 2026, Helsinki in August (summer + Helsinki Festival) averages a high of 19°C and low of 12°C with 79mm of rain over about 13 days. Late summer — high 19°C, low 12°C. Light layers + jacket evenings. Locals returning from cottages.
August (summer + Helsinki Festival) is Festive for Helsinki.
August continues summer peak. Helsinki Festival (mid-August, 17 days) is Finland's premier arts festival with international + local performances. Flow Festival (3rd weekend) is the indie music + cultural festival at Suvilahti (€200+ tickets). Locals returning from summer cottages — city feels alive again.
Travel score
Helsinki August (summer + Helsinki Festival) Weather Stats
Avg High
19°C
Avg Low
12°C
Rainy Days
13
79mm total
Sunshine
7h
Daily avg
Humidity
75%
Slightly humid
UV Index
5
Moderate
Wind
14 km/h
Gusts 28
Sea Temp
18°C
Avg water temp
Crowds
Very busy
At attractions
August (summer + Helsinki Festival) Sunrise & Sunset
Air Quality
PM2.5
8 μg/m³
PM10
18 μg/m³
Status
Good
Feels-Like Temperature & Wind
Feels like
Daytime
19°C
Nighttime
12°C
Humidity and wind affect how the actual temperature feels.
Wind
14 km/h
Max gust 28 km/h
Activities Recommended for August (summer + Helsinki Festival)
August (summer + Helsinki Festival) Travel Pros & Cons
Pros
- Helsinki Festival arts (premier event)
- Flow Festival music
- Warm Baltic swimming continues
Cons
- Hotel rates peak
- Crowds continue
August (summer + Helsinki Festival) Events & Festivals
- Helsinki Festival (mid-Aug, 17 days arts festival)
- Flow Festival (3rd weekend, music festival, Suvilahti)
- Locals return from summer cottages
Helsinki in August (summer + Helsinki Festival) — Full Picture
August continues summer peak. Helsinki Festival (mid-August, 17 days) is Finland's premier arts festival with international + local performances. Flow Festival (3rd weekend) is the indie music + cultural festival at Suvilahti (€200+ tickets). Locals returning from summer cottages — city feels alive again.
What to Wear & What to Pack
Late summer — high 19°C, low 12°C. Light layers + jacket evenings. Locals returning from cottages.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
7°C
-0.3°C
9/mo
Summer (Jun·Jul·Aug)
Current19.3°C
11.7°C
12.3/mo
Autumn (Sep·Oct·Nov)
8.3°C
3.7°C
13/mo
Winter (Dec·Jan·Feb)
-2.3°C
-8°C
10.7/mo
Helsinki Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| -3° | -9° | 11d·53mm | 1h | 85% | 0 | Quiet | Low season | |
| -3° | -10° | 9d·37mm | 3h | 84% | 0 | Quiet | Low season | |
| 1° | -6° | 9d·38mm | 4h | 80% | 2 | Quiet | Low season | |
| 7° | 0° | 9d·32mm | 6h | 70% | 4 | Quiet | Shoulder | |
| May (spring — best month) (Best) | 13° | 5° | 9d·39mm | 9h | 65% | 5 | Moderate | Shoulder |
| June (summer + white nights) (Best) | 18° | 10° | 11d·57mm | 10h | 65% | 6 | Busy | Peak |
| July (summer peak) (Best) | 21° | 13° | 13d·67mm | 9h | 70% | 6 | Very busy | Peak |
| 19° | 12° | 13d·79mm | 7h | 75% | 5 | Very busy | Peak | |
| 14° | 8° | 12d·67mm | 5h | 80% | 3 | Moderate | Shoulder | |
| 8° | 4° | 13d·74mm | 3h | 85% | 2 | Quiet | Low season | |
| 3° | -1° | 14d·73mm | 1h | 88% | 1 | Quiet | Low season | |
| -1° | -5° | 12d·56mm | 1h | 88% | 0 | Moderate | Shoulder |
View Other Months
Helsinki August (summer + Helsinki Festival) Hotel Picks
Frequently Asked Questions
Is August (summer + Helsinki Festival) a good time to visit Helsinki?
Helsinki in August (summer + Helsinki Festival) is Festive. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in Helsinki in August (summer + Helsinki Festival)?
Helsinki August (summer + Helsinki Festival) averages a high of 19°C and a low of 12°C.
Does it rain much in Helsinki in August (summer + Helsinki Festival)?
Helsinki August (summer + Helsinki Festival) averages 79mm of rainfall over about 13 rainy days.
What should I wear in Helsinki in August (summer + Helsinki Festival)?
Late summer — high 19°C, low 12°C. Light layers + jacket evenings. Locals returning from cottages.
What time are sunrise and sunset in Helsinki in August (summer + Helsinki Festival)?
Helsinki August (summer + Helsinki Festival) sunrise is 05:25 and sunset is 21:25, with 16h 00m of daylight.
What's the air quality like in Helsinki in August (summer + Helsinki Festival)?
Helsinki August (summer + Helsinki Festival) air quality (AQI) averages 30, rated Good. PM2.5 averages 8μg/m³.
What activities are recommended in Helsinki in August (summer + Helsinki Festival)?
In August (summer + Helsinki Festival), Helsinki is great for Helsinki Festival, Flow Festival, Saunas.
Is August (summer + Helsinki Festival) peak season in Helsinki?
Helsinki August (summer + Helsinki Festival) crowds are very busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Helsinki
View Other Months
Planning a August (summer + Helsinki Festival) trip to Helsinki?
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Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.