May weather forecast
Fajardo, PR

May brings with it the highest sea temperature of the year, a sizzling 81.6°F (27.6°C), making it the perfect time for a beach holiday in Fajardo. Alongside this, Fajardo steps up its sunlight game, offering approximately 13 hours of daylight, the highest so far. It's crucial to note that rainfall also witnesses a giant leap with a total precipitation of 1.69in spread across 19.8 days of the month. This increase in rainfall is counterbalanced by the warmth and sunshine the city generously offers. Hence, be it a dip in the sea or a ride into the city's history, Fajardo ensures a memorable time in the month of May.

Temperature

May brings an average high-temperature of a still warm 81.5°F (27.5°C), nearly identical to the preceding month. Recording a slight decline in temperature during the nights, Fajardo's May temperatures average at a still moderately hot 78.4°F (25.8°C).

Heat index

May's average heat index is evaluated at a hot 87.8°F (31°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.

Humidity

The months with the highest humidity are May through August, with an average relative humidity of 79%.

Rainfall

In Fajardo, during May, the rain falls for 19.8 days and regularly aggregates up to 1.69" (43mm) of precipitation. Throughout the year, there are 216 rainfall days, and 21.5" (546mm) of precipitation is accumulated.

Ocean temperature

In May, the average ocean temperature in Fajardo is 81.5°F (27.5°C).
Note: Water temperatures between 77°F (25°C) and 84.2°F (29°C) are regarded as very warm, ensuring all water activities are pleasurable for extended periods without feeling uneasy.

Daylight

The average length of the day in May is 13h and 0min.
On the first day of the month, sunrise is at 5:55 am and sunset at 6:44 pm. On the last day of May, sunrise is at 5:45 am and sunset at 6:55 pm AST.

Sunshine

In May, the average sunshine is 10.3h.

UV index

January, March through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the maximum UV index of 7 suggests this advice:
Prevent overexposure. Protection from the sun's harmful effects is needed. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Stay cautious! Sand and water reflections increase UV radiation potency.