Puerto Rico weather in December 2021

  • 28°C maximum daytime temperature in December in Puerto Rico (San Juan)28
    28°C max day temperature
  • 7 hours of sunshine per day
  • 21 days with some rainfall in December in Puerto Rico (San Juan)21
    21 days with some rainfall
  • 21°C minimum night-time temperature in December in Puerto Rico (San Juan)21
    21°C min night temperature
  • 11 hours of daylight per day in December in Puerto Rico (San Juan)11
    11 hours of daylight per day
  • Moderate heat & humidity in December in Puerto Rico (San Juan)M
    Moderate heat & humidity
  • 151 mm monthly rainfall in December in Puerto Rico (San Juan)151
    151 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in December in Puerto Rico (San Juan)8
    8 (Very High) UV index
  • 27°C sea temperature in December in Puerto Rico (San Juan)27
    27°C sea temperature

Below are average maximum temperatures at popular destinations in Puerto Rico in December. Select a destination to see more weather parameters.

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Recommended for Puerto Rico

The December weather guide for Puerto Rico (San Juan) 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.

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

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More about Puerto Rico

How hot is it in Puerto Rico in December?

Daytime temperatures usually reach 28°C in San Juan, Puerto Rico in December with moderate heat and humidity, falling to 21°C at night.

How sunny is it in Puerto Rico in December?

There are normally 7 hours of bright sunshine each day in San Juan, Puerto Rico in December - that's 63% of daylight hours.

How warm is the sea around Puerto Rico in December?

The average sea temperature around San Juan, Puerto Rico in December is 27°C.

Does it rain in Puerto Rico in December?

There are usually 21 days with some rain in San Juan, Puerto Rico in December and the average monthly rainfall is 151mm.

Puerto Rico December sunrise & sunset times

Browse the sunrise and sunset times for Puerto Rico in December 2021. Select a month to view Puerto Rico sunrise and sunset times for the next 12 months. The Puerto Rico sunrise and sunset times shown below are for San Juan.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st December 2021 06:41 17:47
Thursday, 16th December 2021 06:49 17:51
Friday, 31st December 2021 06:56 17:59

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