San Juan Weather in August

August in San Juan brings very high temperatures, with highs of 31°C (88°F) and nights dropping to 25°C (77°F). Rainfall is on the higher side this month, averaging around 118 mm (4.6 in), so keep a rain jacket handy.

Rainfall in San Juan in August

You can expect rain on around 20 days based on historical patterns, with 118 mm (4.6 in) average for the month. This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.

Temperature in San Juan in August

Expect highs of 31°C (88°F) in San Juan in August, with nights dropping to around 25°C (77°F). Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. Nights are warm at 25°C (77°F). It's worth making sure your accommodation has decent ventilation or air conditioning. These are average temperatures, but there can be hotter days. Be sure to wear appropriate clothing and stay hydrated to manage the heat.

Sunshine in San Juan in August

Enjoy a sunny month with about 267 hours of sunshine, the clear skies make San Juan even more beautiful.

Wind Speed in San Juan in August

Wind speeds average 3 m/s (6 knots) during August. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.

Average water temperature in August

At 29°C (84°F), the water feels bath-warm. Fine for swimming, but those looking for a cooling swim may be a bit disappointed.

August in San Juan has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.