May weather forecast
Culebra, PR

May introduces significant changes to Culebra weather. The temperatures register an upward trend, paramount in announcing the onset of summer. A spike in humidity and rainfall to 3.03" (77mm) during May hints at the refreshingly wet season. Despite the increasing cloud cover, daylight also continues to increase, summing up to 13 hours. The island experiences brighter days as it transitions into the summer season.

Temperature

Culebra starts May with an average high-temperature of a still warm 81.1°F (27.3°C), hinting at a minimal fluctuation from April. Maintaining close parity with daytime warmth, the average nocturnal temperature in Culebra during May stays at a still warm 77.7°F (25.4°C).

Heat index

The average heat index in May is estimated at a tropical 86°F (30°C). If exposure and activity persist, fatigue could ensue, possibly leading to heat cramps.
In reference to the heat index, it's for places in shade and with a slight wind. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', ties air temperature with relative humidity to produce the perceived temperature sensation. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. 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 August, with an average relative humidity of 78%, are the most humid months in Culebra, Puerto Rico.

Rainfall

In Culebra, Puerto Rico, in May, it is raining for 20.9 days, with typically 3.03" (77mm) of accumulated precipitation. In Culebra, during the entire year, the rain falls for 253.1 days and collects up to 33.27" (845mm) of precipitation.

Ocean temperature

In Culebra, Puerto Rico, in May, the average water temperature is 81.9°F (27.7°C).
Note: Water temperature ranging from 77°F (25°C) to 84.2°F (29°C) is recognized as warm and pleasant by all, making water activities comfortable and delightful for long durations.

Daylight

In Culebra, the average length of the day in May is 13h and 0min.
On the first day of the month, sunrise is at 5:53 am and sunset at 6:42 pm. On the last day of May, sunrise is at 5:44 am and sunset at 6:53 pm AST.

Sunshine

In Culebra, the average sunshine in May is 10.3h.

UV index

The months with the highest UV index in Culebra are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: A daily high UV index of 7 in May leads to these guidelines:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Notice! The Sun's UV exposure elevates with sand and water reflections.