Weather in Helsinki in August 2018

Expect 20°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Helsinki in August. Check more long-term weather averages for Helsinki in August before you book your next holiday to Finland in 2018.

Key weather averages for Helsinki in August

  • 20°C maximum daytime temperature in August in Helsinki20
    20°C max day temperature
  • 7 hours of sunshine per day (42% of daylight hours) in August in Helsinki7
    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

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

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Guide to Helsinki weather in August

The average maximum daytime temperature in Helsinki in August is a comfortable 20°C (68°F). The average night-time temperature is usually a cool 11°C (52°F). There are usually 7 hours of bright sunshine each day, which represents 42% of the 16 hours of daylight.

Expect 77mm (3.0 inches) of rainfall across the whole of August with 16 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 August is 16°C (61°F).

The weather in Helsinki in August is represented by Helsinki.

Helsinki sunrise & sunset times for August 2018

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


Date Sunrise times Sunset times
Wednesday, 1st August 2018 04:59 21:52
Thursday, 2nd August 2018 05:02 21:50
Friday, 3rd August 2018 05:04 21:47
Saturday, 4th August 2018 05:06 21:44
Sunday, 5th August 2018 05:09 21:42
Monday, 6th August 2018 05:11 21:39
Tuesday, 7th August 2018 05:14 21:37
Wednesday, 8th August 2018 05:16 21:34
Thursday, 9th August 2018 05:19 21:31
Friday, 10th August 2018 05:21 21:28
Saturday, 11th August 2018 05:23 21:26
Sunday, 12th August 2018 05:26 21:23
Monday, 13th August 2018 05:28 21:20
Tuesday, 14th August 2018 05:31 21:17
Wednesday, 15th August 2018 05:33 21:15
Thursday, 16th August 2018 05:36 21:12
Friday, 17th August 2018 05:38 21:09
Saturday, 18th August 2018 05:40 21:06
Sunday, 19th August 2018 05:43 21:03
Monday, 20th August 2018 05:45 21:00
Tuesday, 21st August 2018 05:48 20:57
Wednesday, 22nd August 2018 05:50 20:54
Thursday, 23rd August 2018 05:53 20:52
Friday, 24th August 2018 05:55 20:49
Saturday, 25th August 2018 05:57 20:46
Sunday, 26th August 2018 06:00 20:43
Monday, 27th August 2018 06:02 20:40
Tuesday, 28th August 2018 06:05 20:37
Wednesday, 29th August 2018 06:07 20:34
Thursday, 30th August 2018 06:09 20:31
Friday, 31st August 2018 06:12 20:28
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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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