Puerto Rico weather in August

Are you planning a trip to Puerto Rico in August and wondering what kind of weather to expect? This page has all the details you need.

What is the weather like in Puerto Rico in August?

August in Puerto Rico generally has temperatures ranging from warm to very warm, with precipitation ranging from moderate to heavy.

The average maximum temperatures vary from warm in Maunabo at 30°C (85°F) to very warm in Utuado at 32°C (89°F). On average, August is the warmest month of the year in Puerto Rico. So be prepared and pack summer clothes.

Precipitation in August varies from moderate rainfall in El Combate with an average of 68mm (2.7 inches) to heavy rainfall in Naguabo with 162mm (6.4 inches). It is also generally a sunny time of year with an average of 267 hours of sunshine in San Juan during the entire month.

For more details on the yearly weather and climate conditions, visit our Puerto Rico climate page. To learn more about the weather conditions in specific areas of Puerto Rico in August, check out the map below.

Where to go in Puerto Rico in August

Find the average weather conditions in August for the most popular destinations in Puerto Rico on the map below. Click on a destination dot for more detailed information.

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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 20-29ºC / 68-84ºF and not too much precipitation (less than 90mm / 3.5inches a month).

Popular destinations in Puerto Rico

What is the weather like in August for the 5 most popular destinations in Puerto Rico?

Average weather in San Juan

In August San Juan generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 25°C (77°F) and high monthly rainfall. So on average the conditions are tolerable that month.

San Juan
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   July July
<<  
31°C / 88°F 
25°C / 77°F 
281 hours 
102mm / 4" 
19 days 
31°C / 88°F 
25°C / 77°F 
267 hours 
118mm / 4.6" 
20 days 
31°C / 88°F 
25°C / 77°F 
236 hours 
159mm / 6.3" 
18 days 
Climate in San Juan

Average weather in Rincon

In August Rincon generally has very high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 27°C (80°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

Rincon
Max temperature Max temp
Min temperature Min temp
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   July July
<<  
30°C / 86°F 
26°C / 80°F 
60mm / 2.4" 
18 days 
30°C / 86°F 
27°C / 80°F 
77mm / 3" 
18 days 
30°C / 86°F 
27°C / 80°F 
111mm / 4.4" 
17 days 
Climate in Rincon

Average weather in Vieques

In August Vieques generally has high temperatures with maximum daytime temperatures around 30°C (85°F), minimum nighttime temperatures around 27°C (80°F) and high monthly rainfall. So on average the conditions are tolerable that month.

Vieques
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   July July
<<  
29°C / 85°F 
26°C / 80°F 
281 hours 
131mm / 5.2" 
19 days 
30°C / 85°F 
27°C / 80°F 
267 hours 
149mm / 5.9" 
20 days 
30°C / 85°F 
27°C / 80°F 
236 hours 
176mm / 6.9" 
18 days 
Climate in Vieques

Average weather in Culebra

In August Culebra generally has high temperatures with maximum daytime temperatures around 30°C (85°F), minimum nighttime temperatures around 27°C (80°F) and high monthly rainfall. So on average the conditions are tolerable that month.

Culebra
Max temperature Max temp
Min temperature Min temp
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   July July
<<  
29°C / 85°F 
27°C / 80°F 
110mm / 4.3" 
19 days 
30°C / 85°F 
27°C / 80°F 
130mm / 5.1" 
20 days 
30°C / 85°F 
27°C / 80°F 
159mm / 6.3" 
18 days 
Climate in Culebra

Average weather in Fajardo

In August Fajardo generally has high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 26°C (79°F) and high monthly rainfall. So on average the conditions are tolerable that month.

Fajardo
Max temperature Max temp
Min temperature Min temp
Monthly sun hours Sun hours
Monthly rainfall Rainfall
Monthly rainy days Rainy days
Weather conditions Weather
<<   July July
<<  
30°C / 85°F 
26°C / 78°F 
281 hours 
139mm / 5.5" 
19 days 
30°C / 86°F 
26°C / 79°F 
267 hours 
152mm / 6" 
20 days 
30°C / 86°F 
26°C / 79°F 
236 hours 
177mm / 7" 
18 days 
Climate in Fajardo

Is your destination not in the list? Have a look at other destinations in Puerto Rico.

Is August the best time to go to Puerto Rico?

In our opinion August is not the best time to visit Puerto Rico with commonly tolerable weather in San Juan.

On average the best time to visit Puerto Rico is in January, February, March and December with generally perfect weather in San Juan. The worst months are May, July, August, September, October and November that can have tolerable weather conditions.

Interested in more climate information?

We have much more information about the climate in Puerto Rico. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to Puerto Rico? Get detailed 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.