Weather in San Juan in May 2018

Expect 29°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in San Juan in May. Check more long-term weather averages for San Juan in May before you book your next holiday to Puerto Rico in 2018.

Key weather averages for San Juan in May

  • 29°C maximum daytime temperature in May in San Juan29
    29°C max day temperature
  • 8 hours of sunshine per day (63% of daylight hours) in May in San Juan8
    8 hours of sunshine per day
  • 16 days with some rainfall in May in San Juan16
    16 days with some rainfall
  • 22°C minimum night-time temperature in May in San Juan22
    22°C min night temperature
  • 13 hours of daylight per day in May in San Juan13
    13 hours of daylight per day
  • High heat & humidity in May in San JuanH
    High heat & humidity
  • 182 mm monthly rainfall in May in San Juan182
    182 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in May in San Juan11
    11+ (Extreme) UV index
  • 27°C sea temperature in May in San Juan27
    27°C sea temperature

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

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

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More about San Juan

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Guide to San Juan weather in May

The average maximum daytime temperature in San Juan in May is a warm 29°C (84°F) with high heat & humidity. The average night-time temperature is usually a warm 22°C (72°F). There are usually 8 hours of bright sunshine each day, which represents 63% of the 13 hours of daylight.

Expect 182mm (7.2 inches) of rainfall across the whole of May with 16 days with some rain falling. Maximum UV levels will be extreme (11+ UV index) at midday when the skies are clear.

The average sea temperature in and around San Juan in May is 27°C (81°F).

The weather in San Juan in May is represented by San Juan.

San Juan sunrise & sunset times for May 2018

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st May 2018 05:57 18:46
Wednesday, 2nd May 2018 05:57 18:46
Thursday, 3rd May 2018 05:56 18:47
Friday, 4th May 2018 05:56 18:47
Saturday, 5th May 2018 05:55 18:47
Sunday, 6th May 2018 05:55 18:48
Monday, 7th May 2018 05:54 18:48
Tuesday, 8th May 2018 05:54 18:48
Wednesday, 9th May 2018 05:53 18:49
Thursday, 10th May 2018 05:53 18:49
Friday, 11th May 2018 05:52 18:50
Saturday, 12th May 2018 05:52 18:50
Sunday, 13th May 2018 05:52 18:50
Monday, 14th May 2018 05:51 18:51
Tuesday, 15th May 2018 05:51 18:51
Wednesday, 16th May 2018 05:50 18:51
Thursday, 17th May 2018 05:50 18:52
Friday, 18th May 2018 05:50 18:52
Saturday, 19th May 2018 05:50 18:53
Sunday, 20th May 2018 05:49 18:53
Monday, 21st May 2018 05:49 18:53
Tuesday, 22nd May 2018 05:49 18:54
Wednesday, 23rd May 2018 05:49 18:54
Thursday, 24th May 2018 05:48 18:54
Friday, 25th May 2018 05:48 18:55
Saturday, 26th May 2018 05:48 18:55
Sunday, 27th May 2018 05:48 18:56
Monday, 28th May 2018 05:48 18:56
Tuesday, 29th May 2018 05:48 18:56
Wednesday, 30th May 2018 05:47 18:57
Thursday, 31st May 2018 05:47 18:57
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San Juan weather by month

Check San Juan 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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