Helsinki weather in August 2021

Get the latest coronavirus (Covid-19) updates for Finland with current travel advice and statistics on new cases per 100,000 and vaccine.

  • 20°C maximum daytime temperature in August in Helsinki20
    20°C max day temperature
  • 7 hours of sunshine per day
  • 16 days with some rainfall in August in Helsinki16
    16 days with some rainfall
  • 11°C minimum night-time temperature in August in Helsinki11
    11°C min night temperature
  • 16 hours of daylight per day in August in Helsinki16
    16 hours of daylight per day
  • No heat & humidity in August in Helsinki0
    No heat & humidity
  • 77 mm monthly rainfall in August in Helsinki77
    77 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in August in Helsinki4
    4 (Moderate) UV index
  • 16°C sea temperature in August in Helsinki16
    16°C sea temperature
  • Book a Park Stay & Go airport package with IHG
  • Get 1 night's stay + up to 15 nights airport parking
  • Available at popular airports, train stations & docks

Recommended for Finland

  • Top deals & discounts
  • Helsinki weather overview
  • Helsinki climate averages by month
  • More destinations
  • Best time to go to Helsinki
  • Helsinki 5-day weather forecast

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The August weather guide for Helsinki, Finland shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

How hot is it in Helsinki in August?

Daytime temperatures usually reach 20°C in Helsinki in August, falling to 11°C at night.

How sunny is it in Helsinki in August?

There are normally 7 hours of bright sunshine each day in Helsinki in August - that's 42% of daylight hours.

How warm is the sea around Helsinki in August?

The average sea temperature around Helsinki in August is 16°C.

Does it rain in Helsinki in August?

There are usually 16 days with some rain in Helsinki in August and the average monthly rainfall is 77mm.

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

Helsinki sunrise & sunset times for August 2021

Browse the sunrise and sunset times for Helsinki in August 2021. Select a month to view Helsinki sunrise & sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Sunday, 1st August 2021 05:00 21:51
Monday, 16th August 2021 05:36 21:11
Tuesday, 31st August 2021 06:12 20:27
  • Book car hire online & pay now to save up to 10%
  • Rental period 3-27 days at worldwide locations
  • Travel before 31st December 2021 (inclusive)

Expires at 23:59 on Friday 31st Dec 2021 · View all Sixt offers

Related posts

Popular travel offers

Top ^

*affiliate links: find out how we are funded and why this helps us remain free to use.