Weather in Helsinki in May 2018

Expect 15°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Helsinki in May. Check more long-term weather averages for Helsinki in May before you book your next holiday to Finland in 2018.

Key weather averages for Helsinki in May

  • 15°C maximum daytime temperature in May in Helsinki15
    15°C max day temperature
  • 8 hours of sunshine per day (48% of daylight hours) in May in Helsinki8
    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

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

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More about Helsinki

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Guide to Helsinki weather in May

The average maximum daytime temperature in Helsinki in May is a comfortable 15°C (59°F). The average night-time temperature is usually a cold 5°C (41°F). There are usually 8 hours of bright sunshine each day, which represents 48% of the 17 hours of daylight.

Expect 33mm (1.3 inches) of rainfall across the whole of May with 10 days with some rain falling. Maximum UV levels will be moderate (4 UV index) at midday when the skies are clear.

The average sea temperature in and around Helsinki in May is 5°C (41°F).

The weather in Helsinki in May is represented by Helsinki.

Helsinki sunrise & sunset times for May 2018

Browse the sunrise & sunset times for Helsinki in May 2018. Select a month to view Helsinki sunrise & sunset times for the next twelve months.


Date Sunrise times Sunset times
Tuesday, 1st May 2018 05:18 21:19
Wednesday, 2nd May 2018 05:15 21:21
Thursday, 3rd May 2018 05:12 21:24
Friday, 4th May 2018 05:10 21:26
Saturday, 5th May 2018 05:07 21:29
Sunday, 6th May 2018 05:04 21:31
Monday, 7th May 2018 05:02 21:34
Tuesday, 8th May 2018 04:59 21:36
Wednesday, 9th May 2018 04:56 21:39
Thursday, 10th May 2018 04:54 21:41
Friday, 11th May 2018 04:51 21:44
Saturday, 12th May 2018 04:49 21:46
Sunday, 13th May 2018 04:47 21:48
Monday, 14th May 2018 04:44 21:51
Tuesday, 15th May 2018 04:42 21:53
Wednesday, 16th May 2018 04:39 21:56
Thursday, 17th May 2018 04:37 21:58
Friday, 18th May 2018 04:35 22:00
Saturday, 19th May 2018 04:33 22:02
Sunday, 20th May 2018 04:30 22:05
Monday, 21st May 2018 04:28 22:07
Tuesday, 22nd May 2018 04:26 22:09
Wednesday, 23rd May 2018 04:24 22:11
Thursday, 24th May 2018 04:22 22:14
Friday, 25th May 2018 04:20 22:16
Saturday, 26th May 2018 04:18 22:18
Sunday, 27th May 2018 04:16 22:20
Monday, 28th May 2018 04:15 22:22
Tuesday, 29th May 2018 04:13 22:24
Wednesday, 30th May 2018 04:11 22:26
Thursday, 31st May 2018 04:10 22:27
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Check Helsinki weather for a particular month by selecting from the list below. Monthly weather guides include figures for temperature, rainfall, sunshine hours and sea temperature plus daily sunrise & sunset times.

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