Adjuntas Weather in May
Adjuntas in May sees high daytime temperatures of 27°C (81°F) and nighttime lows of 19°C (66°F). Rainfall is fairly high this month at around 152 mm (6 in), so pack a rain jacket to stay dry.
Rainfall in Adjuntas in May
Looking at the last 30 years, the data shows about 16 days with rain, averaging 152 mm (6 in) for the month. Wet weather is a regular and significant part of this month. Frequent days of rain combined with high totals means proper waterproofs are worth packing.
Temperature in Adjuntas in May
May in Adjuntas sees highs of 27°C (81°F) and lows of 19°C (66°F) overnight. Conditions stay fairly consistent through the month, making it easier to plan what to wear. At 19°C (66°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.May in Adjuntas has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.
Adjuntas Temperature in May
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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
49-year average (1976-2025)
Based on our historical records, temperatures in Adjuntas typically stay consistent throughout May, with daily highs averaging around 27°C (81°F). Nights are warm, with lows around 23°C (73°F).
Average temperatures in May
Historical weather records for Adjuntas in May
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 May
Our historical data for Adjuntas spans 1979 to 2026, revealing these weather extremes.
- Adjuntas recorded its highest May temperature of 37°C (99°F) on May 18, 1997.
- On May 20, 1979, Adjuntas saw its coldest May day with temperatures maxing out at 23°C (73°F).
- The lowest overnight temperature recorded in May was 19°C (66°F) (May 9, 2026).
Best Places in Puerto Rico in May
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 May →
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 May
Warm but pleasant conditions in Adjuntas in May. 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. It's going to pour! Pack a good poncho and prepare for very wet conditions.
What To Do in Adjuntas in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Adjuntas 3-Day Forecast
See the full Adjuntas climate overview or explore weather in Puerto Rico.
Popular in May
Where to go in May - average daytime high across popular destinations.
San Juan
30°C (86°F) Rio Grande29°C (84°F) Aguada
29°C (84°F) Luquillo29°C (84°F) Culebra28°C (82°F) Rincon29°C (84°F) Vieques
28°C (82°F) Fajardo29°C (84°F) 
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