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Puerto Rico weather in December 2025
Expect 28°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Puerto Rico in December. Check more long-term weather averages for Puerto Rico in December before you book your next holiday to Puerto Rico in 2025/2026.
- 28°C max day temperature
28 - 7 hours of sunshine per day
- 21 days with some rainfall
21 - 21°C min night temperature
21 - 11 hours of daylight per day
11 - Moderate heat & humidity
M - 151 mm of monthly rainfall
151 - 8 (Very High) UV index
8 - 27°C sea temperature
27
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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.
Top Puerto Rico destinations
Below are average maximum temperatures at popular countries, regions and places in Puerto Rico in December. Select a holiday destination to see more weather parameters.
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Metric (°C / mm) | Imperial (°F / inches)
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 2025. 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 |
|---|---|---|
| Monday, 1st December 2025 | 06:41 | 17:47 |
| Tuesday, 16th December 2025 | 06:49 | 17:51 |
| Wednesday, 31st December 2025 | 06:56 | 17:59 |
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