Puerto Rico
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Puerto Rico Weather in September

September in Puerto Rico averages 25°C (77°F) during the day and 21°C (70°F) at night. With only 9.4 mm (0.4 in) of rainfall expected on average, it's a largely dry month.

Rainfall in Puerto Rico in September

You can expect rain on roughly a single day based on historical data, averaging 9.4 mm (0.4 in) for the month. On the rare occasion it rains, expect a brief, moderate shower rather than a heavy downpour.

Temperature in Puerto Rico in September

September tends to be one of the excellent months in Puerto Rico, with 25°C (77°F) in the afternoon and 21°C (70°F) overnight. Overall, the month follows a fairly predictable daily temperature pattern. Nights are mild at around 21°C (70°F), which is comfortable for most people.

Sunshine in Puerto Rico in September

The city usually sees around 244 hours of sunlight, indicating many sunny days , a great month for sightseeing.

For additional travel inspiration, our weather planner can help you discover destinations worldwide.

Puerto Rico Temperature in September

Min Temperature
21°C (70°F)
Max Temperature
25°C (77°F)
Chance of Rain
4%
Precipitation
9.4 mm (0.4 in)
Rainy days
a single day
Humidity
68% *
Sunshine
244 hours *
Percentage Sunshine
67% *
* Data from: Las Palmas, Abkhazia, Georgia (35 KM, 22 Miles).

Puerto Rico Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Puerto Rico - and find the best time to visit.

Best Places in Spain in September

Find out more about the weather in Spain and which places have the best travel conditions in this month. See all of Spain in September →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Puerto Rico in September

Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Almost no rain is expected, so no need to bring rain gear. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Puerto Rico in September

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

  • Swimming
    10/10
  • Cycling
    8/10
  • Walking
    8/10
  • Barbeque
    10/10
  • Camping
    10/10
  • Outdoor sports
    8/10

Puerto Rico 3-Day Forecast

More climate data for Puerto Rico

Popular in September

Where to go in September - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.