Cabo Rojo Weather in May
May in Cabo Rojo brings high temperatures, with daytime highs of 29°C (84°F) and nights around 25°C (77°F). Quite a bit of rainfall is expected, around 82 mm (3.2 in), so pack an umbrella.
Rainfall in Cabo Rojo in May
You can typically expect 14 days of rain this month, averaging around 82 mm (3.2 in). The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Cabo Rojo in May
May is a good time to be in Cabo Rojo. Days are excellent, reaching 29°C (84°F), with nights around 25°C (77°F). This kind of day-to-night contrast is typical for this time of year. With overnight lows of 25°C (77°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March, April, May, November and December typically offer the best weather for Cabo Rojo.
Cabo Rojo Temperature in May
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Cabo Rojo Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Cabo Rojo - and find the best time to visit.
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Cabo Rojo typically stay consistent throughout May, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 23°C (73°F).
Average temperatures in May
Historical weather records for Cabo Rojo in May
Browse day-by-day weather records for Cabo Rojo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Cabo Rojo historical weather extremes in May
Based on 47 years of weather observations (1979-2026), these are the most extreme conditions recorded in Cabo Rojo.
- On May 18, 1997, temperatures climbed to 37°C (99°F), marking the warmest May day on record.
- The lowest daytime temperature in May was 23°C (73°F), recorded on May 20, 1979.
- The lowest overnight temperature recorded in May was 19°C (66°F) (May 9, 1989).
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 Cabo Rojo in May
Warm but pleasant conditions in Cabo Rojo 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. Expect heavy rainfall, so bring good rain protection and waterproof bags.
What To Do in Cabo Rojo in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling7/10 -
Walking7/10 -
Camping8/10 -
Outdoor sports7/10
Cabo Rojo 3-Day Forecast
See the full Cabo Rojo 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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