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Maunabo Weather in December
With daytime temperatures of 28°C (82°F) and nighttime lows of 24°C (75°F), December in Maunabo brings high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 78 mm (3.1 in) falls on average.
Rainfall in Maunabo in December
Past climate data indicates that roughly 21 days will see rain, totalling around 78 mm (3.1 in) for the month. Expect plenty of grey, overcast days rather than intense storms. The rain rarely amounts to much on any given day.
Temperature in Maunabo in December
December is one of the better months to visit Maunabo. Expect 28°C (82°F) during the day and 24°C (75°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With lows around 24°C (75°F), the nights are warm enough that a sheet is usually all you need for bedding.
Sunshine in Maunabo in December
Enjoy a sunny month with about 216 hours of sunshine, the clear skies make Maunabo even more beautiful.If your ideal day consists of dry skies and pleasant temperatures, January, February, March, April and December typically offer the best circumstances for Maunabo.
Maunabo Temperature in December
Min Temperature
24°C (75°F)
Max Temperature
28°C (82°F)
Chance of Rain
70%
Precipitation
78 mm (3.1 in)
Rainy days
21 days
Humidity
75% *
Sunshine
216 hours *
Percentage Sunshine
64% *
* Data from: San Juan, Puerto Rico (48 KM, 30 Miles).
Maunabo Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Maunabo - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Maunabo typically stay consistent throughout December, with daily highs averaging around 28°C (82°F). Nights are warm, with lows around 23°C (73°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather records for Maunabo in December
Browse day-by-day weather records for Maunabo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Maunabo historical weather extremes in December
Based on 49 years of weather observations in Maunabo between 1976 and 2025, these are the recorded extremes.
- The warmest day in December was on December 7, 2015, with a maximum of 34°C (93°F).
- On December 25, 1986, Maunabo saw its coldest December day with temperatures maxing out at 23°C (73°F).
- The coldest night in December in Maunabo was on December 18, 1996, with a minimum of 18°C (64°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 Maunabo in December
Warm weather calls for comfortable, breathable clothing in December. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Rain is likely on several days, so bring a good rain jacket. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Maunabo in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming9/10 -
Cycling7/10 -
Walking7/10 -
Camping8/10 -
Outdoor sports7/10
Maunabo 3-Day Forecast
More climate data for Maunabo
Temperature Rainfall Sunshine Humidity
See the full Maunabo 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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