Helsinki weather in May 2023

  • 15°C maximum daytime temperature in May in Helsinki15
    15°C max day temperature
  • 8 hours of sunshine per day
  • 10 days with some rainfall in May in Helsinki10
    10 days with some rainfall
  • 5°C minimum night-time temperature in May in Helsinki5
    5°C min night temperature
  • 17 hours of daylight per day in May in Helsinki17
    17 hours of daylight per day
  • No heat & humidity in May in Helsinki0
    No heat & humidity
  • 33 mm monthly rainfall in May in Helsinki33
    33 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in May in Helsinki4
    4 (Moderate) UV index
  • 5°C sea temperature in May in Helsinki5
    5°C sea temperature
  • Check out latest hotel deals worldwide with
  • Find trending hotels, popular destinations & more
  • Search for specific destinations & dates or by hotel type

Recommended for Finland

The May weather guide for Finland (Helsinki) 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.

  • 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

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

Back to top

How warm is it in Helsinki in May?

Daytime temperatures usually reach 15°C in Helsinki in May, falling to 5°C at night.

How sunny is it in Helsinki in May?

There are normally 8 hours of bright sunshine each day in Helsinki in May - that's 48% of daylight hours.

Is the sea cold around Helsinki in May?

The average sea temperature around Helsinki in May is 5°C.

Does it rain in Helsinki in May?

There are usually 10 days with some rain in Helsinki in May and the average monthly rainfall is 33mm.

Helsinki May sunrise & sunset times

Browse the sunrise and sunset times for Helsinki in May 2023. Select a month to view Helsinki sunrise and sunset times for the next 12 months.


Date Sunrise times Sunset times
Monday, 1st May 2023 05:18 21:18
Tuesday, 16th May 2023 04:40 21:55
Wednesday, 31st May 2023 04:10 22:27

Related posts

Popular travel offers

Top ^

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