May weather forecast
Barceloneta, PR

May manifests considerable changes in Barceloneta's weather, with significant increases in both temperature and humidity, typical of the onset of the tropical summer season. Besides, the sea temperature increases, providing additional warmth that is well-suited for water activities. May records the highest rainfall volume of 4.02" (102mm) over the most significant number of days, 22.9. Thus, occasional interruptions in outdoor activities should be anticipated due to frequent showers.

Temperature

Entering May, Barceloneta's average high-temperature reads a still moderately hot 83.1°F (28.4°C), indicating a close resemblance to the previous month's climate. Throughout May, a modest shift from daytime highs is anticipated, with an average low-temperature of 75.6°F (24.2°C).

Heat index

The heat index value during May is estimated at a tropical 91.4°F (33°C). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a single figure representing how weather conditions feel when combining temperature and humidity. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.

Humidity

May through July, October and November, with an average relative humidity of 79%, are the most humid months in Barceloneta.

Rainfall

The month with the most rainfall in Barceloneta is May, when the rain falls for 22.9 days and typically aggregates up to 4.02" (102mm) of precipitation.

Ocean temperature

In Barceloneta, Puerto Rico, the average seawater temperature in May is 81.5°F (27.5°C).
Note: Temperatures between 77°F (25°C) and 84.2°F (29°C) are excellent for swimming, diving, and other water activities, providing comfort and enjoyment for extended periods without discomfort.

Daylight

In May, the average length of the day is 13h and 1min.
On the first day of the month, sunrise is at 5:58 am and sunset at 6:47 pm. On the last day of May, in Barceloneta, sunrise is at 5:49 am and sunset at 6:58 pm AST.

Sunshine

The average sunshine in May is 10.6h.

UV index

The months with the highest UV index are April through November, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index of 7 in May converts into the following recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Warning! Reflective surfaces like sand and water amplify the Sun's UV radiation.