Loiza Weather in December

During December, Loiza experiences high daytime temperatures of 28°C (82°F) and cooler nights around 24°C (75°F). Expect quite a bit of rainfall. Around 72 mm (2.8 in) is typical.

Rainfall in Loiza in December

On average, there are about 21 days with rain during this month, averaging 72 mm (2.8 in). 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 Loiza in December

If you're visiting Loiza in December, expect perfect temperatures with highs of 28°C (82°F) and overnight lows of 24°C (75°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights are warm at 24°C (75°F). It's worth making sure your accommodation has decent ventilation or air conditioning.

Sunshine in Loiza in December

With approximately 216 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

Wind Speed in Loiza in December

Average wind speeds reach 3 m/s (6 knots) in December, creating light breezes that feel pleasant throughout the day. Some days are calmer, while others bring slightly more active breezes.

Average water temperature in December

At 27°C (81°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March, April and December typically offer the best weather for Loiza.

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

Loiza Temperature in December

Min Temperature 24°C (75°F)  

Max Temperature 28°C (82°F)  

Water Temperature 27°C (81°F) *  

Chance of Rain 70%  

Precipitation 72 mm (2.8 in)  

Rainy days 21 days  

Humidity 75% *  

Windspeed 3 m/s (6 knots) *  

Sunshine 216 hours *  

Percentage Sunshine 64% *  

* Data from: San Juan, Puerto Rico (12 KM, 7 Miles).

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Loiza 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

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‹ January February March April May June July August September October November 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

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‹ January February March April May June July August September October November December ›

Historical weather for Loiza in December

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

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Loiza historical weather extremes in December

The extremes listed below come from historical weather data collected in Loiza from 1976 through 2025.

• Loiza recorded its highest December temperature of 34°C (93°F) on December 6, 1989.
• The coldest December day was on December 29, 2010, with a maximum of 24°C (75°F).
• Nighttime temperatures dropped to 19°C (66°F) on December 24, 1991, marking the coldest December night on record.

What to Wear in Loiza in December

Warm temperatures in December make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Rain gear is recommended, you can expect wet weather on multiple days. Expect water temperatures of around 27°C (81°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Loiza in December

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

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

8/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

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

More climate data for Loiza

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Loiza climate overview or explore weather in Puerto Rico.