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Guanica Weather in December
Thinking of visiting Guanica in December? Expect high temperatures reaching 29°C (84°F) during the day, dropping to 23°C (73°F) at night, with some rainfall likely.
Rainfall in Guanica in December
Historically, the month has about 20 days of rain, averaging 29 mm (1.1 in) in total. Rain falls on many days this month, but usually in relatively small amounts. A light waterproof is more useful than a heavy umbrella.
Temperature in Guanica in December
The excellent temperature in Guanica in December makes it a solid month to visit, with 29°C (84°F) during the day and 23°C (73°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 23°C (73°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March, April, May, November and December typically offer the best weather for Guanica.
Guanica Temperature in December
Min Temperature
23°C (73°F)
Max Temperature
29°C (84°F)
Chance of Rain
67%
Precipitation
29 mm (1.1 in)
Rainy days
20 days
Guanica Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Guanica - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Guanica typically stay consistent throughout December, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 21°C (70°F).
Average temperatures in December
Historical weather records for Guanica in December
Browse day-by-day weather records for Guanica spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Guanica historical weather extremes in December
Based on 28 years of weather observations (1997-2025), these are the most extreme conditions recorded in Guanica.
- The hottest December day on record in Guanica reached 34°C (93°F) (December 24, 2002).
- On December 11, 2007, Guanica saw its coldest December day with temperatures maxing out at 25°C (77°F).
- The coldest night in December in Guanica was on December 18, 2008, with a minimum of 16°C (61°F).
Best Places in Puerto Rico in December
Find out more about the weather in Puerto Rico and which places have the best travel conditions in this month. See all of Puerto Rico in December →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Guanica in December
Warm but pleasant conditions in Guanica in December. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Light rain is possible, so consider bringing a small umbrella or rain jacket.
What To Do in Guanica in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling8/10 -
Walking8/10 -
Camping10/10 -
Outdoor sports8/10
Guanica 3-Day Forecast
More climate data for Guanica
See the full Guanica climate overview or explore weather in Puerto Rico.
Popular in December
Where to go in December - average daytime high across popular destinations.
Rio Grande
28°C (82°F) San Juan29°C (84°F) Aguada
28°C (82°F) Rincon28°C (82°F) Luquillo28°C (82°F) Culebra28°C (82°F) Vieques28°C (82°F) Fajardo28°C (82°F) Bucket list
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