Loiza Weather in May
During May, Loiza experiences high daytime temperatures of 30°C (86°F) and cooler nights around 24°C (75°F). Expect quite a bit of rainfall. Around 127 mm (5 in) is typical.
Rainfall in Loiza in May
This month experiences about 16 days of rain according to historical data, averaging 127 mm (5 in). This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.
Temperature in Loiza in May
Daytime temperatures in Loiza reach 30°C (86°F) in May, dropping to 24°C (75°F) at night. 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 May
With approximately 255 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.
Wind Speed in Loiza in May
Wind speeds average 3 m/s (6 knots) during May. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.
Average water temperature in May
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.May in Loiza can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
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 May
Min Temperature
24°C (75°F)
Max Temperature
30°C (86°F)
Water Temperature
27°C (81°F) *
Chance of Rain
53%
Precipitation
127 mm (5 in)
Rainy days
16 days
Humidity
75% *
Windspeed
3 m/s (6 knots) *
Sunshine
255 hours *
Percentage Sunshine
63% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Loiza typically stay consistent throughout May, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 24°C (75°F).
Average temperatures in May
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 May
Historical weather for Loiza in May
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.
Loiza historical weather extremes in May
Our historical data for Loiza spans 1976 to 2026, revealing these weather extremes.
- The hottest May day on record in Loiza reached 35°C (95°F) (May 11, 1980).
- The coldest May day was on May 23, 2004, with a maximum of 24°C (75°F).
- The lowest overnight temperature recorded in May was 21°C (70°F) (May 10, 1986).
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 →
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What to Wear in Loiza in May
Warm but pleasant conditions in Loiza 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. With water temperatures around 27°C (81°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Loiza in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Puerto Rico, check out our Loiza's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Loiza climate overview or explore weather in Puerto Rico.
