May weather forecast
San Juan, Dominican Republic

The month of May brings about a noticeable change in the weather pattern of San Juan. In terms of rainfall, this transition is vast, as showers become more frequent and intense. The weather remains consistently warm, indicating the impending summer. May is defined by longer daylight hours, providing ample time for experiencing the city's outdoor attractions. This balanced blend of warm temperatures and increased rainfall adds a distinctive charm to this month.

Temperature

The average high-temperature during May matches that of the preceding month. San Juan records a consistent low-temperature average of 19°C (66.2°F) during May, indicating a significant difference from the daytime heat.

Rainfall

The month with the most rainfall is May, when the rain falls for 12 days and typically aggregates up to 189mm (7.44") of precipitation.

Daylight

In May, the average length of the day is 13h and 2min.
On the first day of May, sunrise is at 06:16 and sunset at 19:07. On the last day of the month, sunrise is at 06:07 and sunset at 19:18 AST.

Sunshine

The months with the least sunshine are January, May, September through December, with an average of 7h of sunshine.

UV index

The months with the highest UV index are March through September, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an ultimate health vulnerability from exposure to the Sun's UV rays for the average person.
Note: In May, a daily UV index of 12 turns into the following recommendations:
Utilize every vital safety procedure. Individuals with light skin may endure burns in less than 5 minutes. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Despite the overcast weather, sunscreen with SPF of at least 30 should be applied liberally and reapplied often, particularly after swimming or an outdoor workout.