San Juan weather in August (North Puerto Rico, Puerto Rico)

Curious about the August weather in San Juan? Here's what the weather might have in store during this month.

In August, San Juan typically experiences very high temperatures and high rainfall. Daytime temperatures hover around 31°C, while nights can cool down to about 25°C. On average, it is the warmest month of the year. So be prepared and pack summer clothes. Embrace the warmth, but always stay equipped with your summer essentials to make the most of this toasty month.

San Juan in August usually receives high rainfall, averaging around 118 mm for the month. When we look at the climate data from the last 30 years, we can expect around 20 days of rain.

With around 267 hours of sunshine, the days are mostly sunny. It gives a pleasant and vibrant feel to the area.

If you prefer dry days with pleasant temperatures, August may not be the ideal month to visit San Juan. January, February, March and December typically offer the most optimal weather. In contrast, May, July, August, September, October and November tend to have less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized San Juan climate page with graphs.

 

San Juan, monthly averages in August

Min TemperatureMin Temperature 25°C  
Max TemperatureMax Temperature 31°C  
Water TemperatureWater Temperature 29°C  
Chance of RainChance of Rain 66%  
PrecipitationPrecipitation 118 mm  
Rainy daysRainy days 20 days  
HumidityHumidity 76%  
WindspeedWindspeed 11 km/h  
SunshineSunshine 267 hours  
Percentage SunshinePercentage Sunshine 68%  

Where to go in Puerto Rico in August

Find out more about the weather in Puerto Rico in August and which places have the best weather conditions in this month.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in San Juan in August?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case. With a water temperature of around 29°C this is a great month to swim so bring your swimwear.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in August.

Swimming
9/10
Cycling
7/10
Walking
7/10
Camping
7/10
Outdoor sports
7/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in San Juan.

Our site offers climate and forecast data for every country in the world. Are you going to Puerto Rico? On this website you can find historical weather averages for many cities in Puerto Rico. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.