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San Juan weather in May 2021
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- 2929°C max day temperature
- 1616 days with some rainfall
- 2222°C min night temperature
- 1313 hours of daylight per day
- HHigh heat & humidity
- 182182 mm of monthly rainfall
- 1111+ (Extreme) UV index
- 2727°C sea temperature
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The May weather guide for San Juan, Puerto Rico 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.
How hot is it in San Juan in May?
Daytime temperatures usually reach 29°C in San Juan in May with high heat and humidity, falling to 22°C at night.
How sunny is it in San Juan in May?
There are normally 8 hours of bright sunshine each day in San Juan in May - that's 63% of daylight hours.
How warm is the sea around San Juan in May?
The average sea temperature around San Juan in May is 27°C.
Does it rain in San Juan in May?
There are usually 16 days with some rain in San Juan in May and the average monthly rainfall is 182mm.
Metric (°C / mm) | Imperial (°F / inches)
San Juan sunrise & sunset times for May 2021
Browse the sunrise and sunset times for San Juan in May 2021. Select a month to view San Juan sunrise & sunset times for the next 12 months.
|Date||Sunrise times||Sunset times|
|Saturday, 1st May 2021||05:57||18:46|
|Sunday, 16th May 2021||05:50||18:51|
|Monday, 31st May 2021||05:47||18:57|
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