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Carolina Weather in December

December is one of the perfect months to visit Carolina, with daytime temperatures of 28°C (82°F) and lows of 23°C (73°F) at night. Do note that quite a bit of rainfall is typical, averaging around 70 mm (2.8 in).

Rainfall in Carolina in December

Records from the past 30 years suggest around 21 days of rain, with 70 mm (2.8 in) average for the month. This is a month with many wet days but modest rainfall totals, so showers are generally light and easy to manage.

Temperature in Carolina in December

The perfect temperature in Carolina in December makes it a solid month to visit, with 28°C (82°F) during the day and 23°C (73°F) at night. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights are warm at 23°C (73°F). It's worth making sure your accommodation has decent ventilation or air conditioning.

Sunshine in Carolina in December

There are approximately 216 hours of sunshine this month, resulting in mostly clear days.

Wind Speed in Carolina in December

December has wind speeds averaging 3 m/s (6 knots). You can expect comfortable light winds that steadily move flags and feel mild throughout the day. Since this is an average, daily conditions vary from gentle winds to more active breezes.

Average water temperature in December

With water at 27°C (81°F), you can expect warm, pleasant conditions for any water activity. There's no adjustment period — it feels comfortable straight away.

If you favor pleasant temperatures and minimal rainfall, December is one of the best months to visit Carolina.

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Check the conditions for any month of the year.

For a detailed overview over the year and the best time to visit Puerto Rico, check out our Carolina's climate page.

Carolina Temperature in December

Min TemperatureMin Temperature 23°C (73°F)  
Max TemperatureMax Temperature 28°C (82°F)  
Water TemperatureWater Temperature 27°C (81°F) *  
Chance of RainChance of Rain 70%  
PrecipitationPrecipitation 70 mm (2.8 in)  
Rainy daysRainy days 21 days  
HumidityHumidity 75% *  
WindspeedWindspeed 3 m/s (6 knots) *  
SunshineSunshine 216 hours *  
Percentage SunshinePercentage Sunshine 64% *  
* Data from: San Juan, Puerto Rico (7 KM, 4 Miles).

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Carolina 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 for Carolina in December

Browse day-by-day weather records for Carolina spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Carolina historical weather extremes in December

Our historical data for Carolina spans 1976 to 2025, revealing these weather extremes.

  • Carolina recorded its highest December temperature of 34°C (93°F) on December 6, 1989.
  • The lowest daytime temperature in December was 24°C (75°F), recorded on December 15, 2010.
  • The coldest night in December in Carolina was on December 30, 2002, 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 →

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Legend 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 Carolina in December

Warm but pleasant conditions in Carolina 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. Wet weather is likely, so pack waterproof gear for multiple rainy days. The water temperature sits at about 27°C (81°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Carolina in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming
9/10
Cycling
8/10
Walking
8/10
Camping
8/10
Outdoor sports
8/10

Select a Month

Check the conditions for any month of the year.

For a detailed overview over the year and the best time to visit Puerto Rico, check out our Carolina's climate page.

More climate data for Carolina