San Juan weather in December 2020

Get the latest coronavirus (COVID-19) updates for Puerto Rico with current travel advice, statistics and online resources.

  • 28°C maximum daytime temperature in December in San Juan28
    28°C max day temperature
  • 7 hours of sunshine per day
  • 21 days with some rainfall in December in San Juan21
    21 days with some rainfall
  • 21°C minimum night-time temperature in December in San Juan21
    21°C min night temperature
  • 11 hours of daylight per day in December in San Juan11
    11 hours of daylight per day
  • Moderate heat & humidity in December in San JuanM
    Moderate heat & humidity
  • 151 mm monthly rainfall in December in San Juan151
    151 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in December in San Juan8
    8 (Very High) UV index
  • 27°C sea temperature in December in San Juan27
    27°C sea temperature

Recommended for Puerto Rico

  • Top deals & discounts
  • San Juan weather overview
  • San Juan climate averages by month
  • More destinations
  • Best time to go to San Juan
  • San Juan 5-day weather forecast

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

The December 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.

  • Save 30% or more on hotels around the world
  • Book in the Booking.com Black Friday sale
  • Travel before 31st December 2021 (inclusive)

Expires at 23:59 on Monday 30th Nov 2020 · View all Booking.com offers

How hot is it in San Juan in December?

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

How sunny is it in San Juan in December?

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

How warm is the sea around San Juan in December?

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

Does it rain in San Juan in December?

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

San Juan sunrise & sunset times for December 2020

Browse the sunrise & sunset times for San Juan in December 2020. Select a month to view San Juan sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st December 2020 06:41 17:47
Wednesday, 16th December 2020 06:50 17:51
Thursday, 31st December 2020 06:56 17:59
  • Save on return flights to worldwide destinations with KLM
  • Book flights to Abu Dhabi, Jo'burg, Tokyo & more
  • Plus more flights to the Americas, Middle East & Europe

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

Back to top

Discover more about Puerto Rico

Where is hot in Puerto Rico in December for 2020/2021?

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

Related posts

Popular travel offers

Top ^

*affiliate links: find out how we are funded and why this helps us remain free to use.