Adjuntas Weather in January
January in Adjuntas brings high temperatures, with daytime highs of 25°C (77°F) and nights around 16°C (61°F). Rainfall is at its lowest this month, making it one of the more reliable months to be outdoors.
Rainfall in Adjuntas in January
With the driest weather of the year, this month is ideal for outdoor fun. Climate statistics over the past 30 years suggest around 20 days of rain, with 33 mm (1.3 in) average for the month. Rain is frequent but mostly light this month, with brief showers more common than heavy downpours.
Temperature in Adjuntas in January
The excellent temperature in Adjuntas in January makes it a solid month to visit, with 25°C (77°F) during the day and 16°C (61°F) at night. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With lows of 16°C (61°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest. This coolest month of the year still offers plenty of warmth and comfortable days.If you're a fan of comfortable temperatures and drier conditions, January is a great time to visit.
Adjuntas Temperature in January
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Adjuntas Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Adjuntas - and find the best time to visit.
Daily Historical Temperatures
50-year average (1977-2026)
Based on our historical records, temperatures in Adjuntas typically stay consistent throughout January, with daily highs averaging around 25°C (77°F). Nights are warm, with lows around 20°C (68°F).
Average temperatures in January
Historical weather records for Adjuntas in January
Browse day-by-day weather records for Adjuntas spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Adjuntas historical weather extremes in January
Based on 25 years of weather observations in Adjuntas between 2000 and 2025, these are the recorded extremes.
- Adjuntas recorded its highest January temperature of 34°C (93°F) on January 22, 2025.
- The coldest January day was on January 6, 2012, with a maximum of 25°C (77°F).
- Nighttime temperatures dropped to 13°C (55°F) on January 20, 2000, marking the coldest January night on record.
Best Places in Puerto Rico in January
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 January →
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 Adjuntas in January
For Adjuntas in January, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Some rain is possible, so pack something to handle light showers.
What To Do in Adjuntas in January
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling10/10 -
Walking10/10 -
Camping10/10 -
Outdoor sports10/10
Adjuntas 3-Day Forecast
See the full Adjuntas climate overview or explore weather in Puerto Rico.
Popular in January
Where to go in January - average daytime high across popular destinations.
San Juan
28°C (82°F) Rio Grande28°C (82°F) Aguada
28°C (82°F) Luquillo27°C (81°F) Culebra27°C (81°F) Rincon28°C (82°F) Vieques27°C (81°F) Fajardo27°C (81°F) 
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