Weather in Porto in May 2018

Expect 20°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Porto in May. Check more long-term weather averages for Porto in May before you book your next holiday to Portugal in 2018.

Key weather averages for Porto in May

  • 20°C maximum daytime temperature in May in Porto20
    20°C max day temperature
  • 9 hours of sunshine per day (59% of daylight hours) in May in Porto9
    9 hours of sunshine per day
  • 13 days with some rainfall in May in Porto13
    13 days with some rainfall
  • 11°C minimum night-time temperature in May in Porto11
    11°C min night temperature
  • 15 hours of daylight per day in May in Porto15
    15 hours of daylight per day
  • No heat & humidity in May in Porto0
    No heat & humidity
  • 86 mm monthly rainfall in May in Porto86
    86 mm of monthly rainfall
  • UV (maximum) index 7 (High) in May in Porto7
    7 (High) UV index
  • 15°C sea temperature in May in Porto15
    15°C sea temperature

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

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More about Porto

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Guide to Porto weather in May

The average maximum daytime temperature in Porto in May is a comfortable 20°C (68°F). The average night-time temperature is usually a cool 11°C (52°F). There are usually 9 hours of bright sunshine each day, which represents 59% of the 15 hours of daylight.

Expect 86mm (3.4 inches) of rainfall across the whole of May with 13 days with some rain falling. Maximum UV levels will be high (7 UV index) at midday when the skies are clear.

The average sea temperature in and around Porto in May is 15°C (59°F).

The weather in Porto in May is represented by Porto.

Porto sunrise & sunset times for May 2018

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


Date Sunrise times Sunset times
Tuesday, 1st May 2018 06:32 20:31
Wednesday, 2nd May 2018 06:31 20:32
Thursday, 3rd May 2018 06:30 20:33
Friday, 4th May 2018 06:29 20:35
Saturday, 5th May 2018 06:27 20:36
Sunday, 6th May 2018 06:26 20:37
Monday, 7th May 2018 06:25 20:38
Tuesday, 8th May 2018 06:24 20:39
Wednesday, 9th May 2018 06:23 20:40
Thursday, 10th May 2018 06:22 20:41
Friday, 11th May 2018 06:20 20:42
Saturday, 12th May 2018 06:19 20:43
Sunday, 13th May 2018 06:18 20:44
Monday, 14th May 2018 06:17 20:45
Tuesday, 15th May 2018 06:16 20:46
Wednesday, 16th May 2018 06:15 20:47
Thursday, 17th May 2018 06:14 20:48
Friday, 18th May 2018 06:14 20:49
Saturday, 19th May 2018 06:13 20:50
Sunday, 20th May 2018 06:12 20:51
Monday, 21st May 2018 06:11 20:52
Tuesday, 22nd May 2018 06:10 20:52
Wednesday, 23rd May 2018 06:10 20:53
Thursday, 24th May 2018 06:09 20:54
Friday, 25th May 2018 06:08 20:55
Saturday, 26th May 2018 06:07 20:56
Sunday, 27th May 2018 06:07 20:57
Monday, 28th May 2018 06:06 20:58
Tuesday, 29th May 2018 06:06 20:58
Wednesday, 30th May 2018 06:05 20:59
Thursday, 31st May 2018 06:05 21:00
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Check Porto 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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