Puerto Rico: where to swim in December?
Puerto Rico, in December: the sea is at 27.8 °C on average along the coast, from 27.6 °C to 28.0 °C depending on the spot. Where the water is warmest (28.0 °C), it is very warm. Almost lukewarm: you can get in without any cold shock.
Sea temperature, month by month
| Month | Average temperature | Depending on the spot | Where it is warmest |
|---|---|---|---|
| January | 27.0 °C | 26.7 °C – 27.2 °C | very warm |
| February | 26.7 °C | 26.4 °C – 26.8 °C | warm |
| March | 26.6 °C | 26.3 °C – 26.8 °C | warm |
| April | 27.0 °C | 26.7 °C – 27.3 °C | very warm |
| May | 27.6 °C | 27.3 °C – 27.8 °C | very warm |
| June | 28.2 °C | 28.0 °C – 28.4 °C | very warm |
| July | 28.5 °C | 28.4 °C – 28.6 °C | very warm |
| August | 29.0 °C | 28.9 °C – 29.1 °C | very warm |
| September | 29.4 °C | 29.1 °C – 29.6 °C | very warm |
| October | 29.3 °C | 29.1 °C – 29.4 °C | very warm |
| November | 28.7 °C | 28.5 °C – 28.8 °C | very warm |
| December | 27.8 °C | 27.6 °C – 28.0 °C | very warm |
Compared with November, the water cools down by 0.9 °C in December. The warmest month: September (29.4 °C). The coldest: March (26.6 °C).
Nearby, in December
- United States Virgin Islands 27.8 °C · very warm
- Mexico 24.2 °C · very warm
- United States 16.1 °C · warm
- Brazil 26.4 °C · very warm
- Canada -0.4 °C · very cold
- Portugal 16.7 °C · cool
- Ireland 10.8 °C · cold
- United Kingdom 10.0 °C · cold
- France 13.6 °C · cool
- Netherlands 9.0 °C · very cold
And right now?
For the temperature measured right now, station by station and to the hour: Puerto Rico: water temperature
Frequently asked questions
What is the sea temperature in December?
Puerto Rico, in December: 27.8 °C on average along the coast, from 27.6 °C in the coolest waters to 28.0 °C in the warmest (average of the years 2011 to 2025).
Can you swim in December?
Where the water is warmest (28.0 °C), it is very warm. Almost lukewarm: you can get in without any cold shock.
What is the best month for swimming?
The water is warmest in September (29.4 °C on average) and coldest in March (26.6 °C). Where the water is warmest, it goes above 20 °C in these months: January, February, March, April, May, June, July, August, September, October, November, December.
Where is the water warmest in December?
The warmest in December: United States Virgin Islands (27.8 °C), Mexico (24.2 °C), United States (16.1 °C). The coolest: Netherlands (9.0 °C).
Where do these temperatures come from?
These are averages of the sea surface temperature from 2011 to 2025, computed from NOAA satellite images (OISST, one value about every 50 km), in a 100 km strip along the coasts of the main country: distant territories (overseas, remote islands) are not counted. It is an estimate, not a measurement taken at the beach: lakes and rivers are not included.