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Maunabo Weather in January
In Maunabo, January brings high daytime temperatures around 27°C (81°F), with nights cooling to 23°C (73°F). Expect quite a bit of rainfall this month.
Rainfall in Maunabo in January
Climate statistics over the past 30 years suggest around 20 days of rain, with 64 mm (2.5 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 Maunabo in January
The excellent temperature in Maunabo in January makes it a solid month to visit, with 27°C (81°F) during the day and 23°C (73°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. Nights are warm at 23°C (73°F). It's worth making sure your accommodation has decent ventilation or air conditioning.
Sunshine in Maunabo in January
Expect sunny days throughout the month, with an estimated 238 hours of sunshine. This makes it a pleasant time to visit Maunabo.If you favor pleasant temperatures and minimal rainfall, January is one of the best months to visit Maunabo.
Maunabo Temperature in January
Min Temperature
23°C (73°F)
Max Temperature
27°C (81°F)
Chance of Rain
66%
Precipitation
64 mm (2.5 in)
Rainy days
20 days
Humidity
74% *
Sunshine
238 hours *
Percentage Sunshine
70% *
* 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
51-year average (1976-2026)
Based on our historical records, temperatures in Maunabo typically stay consistent throughout January, with daily highs averaging around 27°C (81°F). Nights are warm, with lows around 23°C (73°F).
Average temperatures in January
Daily Historical Precipitation
51-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in January
Historical weather records for Maunabo in January
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 January
According to our 36 years of weather records for Maunabo, the following extremes were recorded between 1989 and 2025.
- The warmest day in January was on January 11, 2019, with a maximum of 32°C (90°F).
- The coldest January day was on January 28, 2006, with a maximum of 23°C (73°F).
- The coldest night in January in Maunabo was on January 19, 2000, with a minimum of 16°C (61°F).
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
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 January
Warm temperatures in January 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. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
What To Do in Maunabo in January
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming9/10 -
Cycling8/10 -
Walking8/10 -
Camping8/10 -
Outdoor sports8/10
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 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) Bucket list
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