August weather forecast
San Juan, Dominican Republic

As San Juan enters August, certain subtle changes become evident. Rainfall levels continue to soar, and the UV index sustains a high of 12. Despite being the tail-end of summer, the weather doesn't cool down significantly. The days stay warm and the humidity remains high. Notwithstanding the high precipitation, the city continues to enjoy plenty of sunshine.

Temperature

July through September are the warmest months in San Juan, with an average high-temperature of 32°C (89.6°F).

Rainfall

In San Juan, in August, it is raining for 15 days, with typically 135mm (5.31") of accumulated precipitation. In San Juan, during the entire year, the rain falls for 154 days and collects up to 1160mm (45.67") of precipitation.

Daylight

The average length of the day in August is 12h and 45min.
On the first day of the month, sunrise is at 06:22 and sunset at 19:20. On the last day of August, in San Juan, sunrise is at 06:30 and sunset at 19:00 AST.

Sunshine

The months with the most sunshine are February through April, June through August, with an average of 8h of sunshine.

UV index

The months with the highest UV index in San Juan are March through September, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an extreme health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: A typical high UV index of 12 in August suggests the following recommendations:
Carry out all important precautions, unprotected skin could get burns in no time. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Even when it's cloudy, ensure the generous application and frequent reapplication of a sunscreen with at least 30 SPF, particularly post swim or outdoor activity.