Puerto Rico weather
Our guide to the weather in Puerto Rico during September
We've looked at the most up-to-date weather data for Puerto Rico, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Puerto Rico weather in September.
How warm is it in Puerto Rico during September?
The temperature is extremely stable in September with average highs of 25℃ and lows just 3℃ lower at 22℃. The UV index will be high at this time of year, so protection against skin and eye damage is needed. Try to limit exposure between 10am and 4pm. Apply broad spectrum SPF 30+ sunscreen every few hours, even if it's cloudy, or more frequently after sweating or swimming, and wear UV-blocking sunglasses too, and bear in mind that bright surfaces, such as sand and water increase UV exposure.
Does it rain in Puerto Rico during September?
On average, in September you'll see rain on just one day in the month. In other words, you shouldn't see any of the wet stuff. You're not likely to see a thunderstorm during your trip.
Is it windy in Puerto Rico during September?
You're unlikely to experience any strong winds. Expect a gentle breeze that increases to moderate at times during September. With warm air temperatures and high humidity, any breeze will feel warm but refreshing.
How warm is the sea in Puerto Rico during September?
The water temperature around Puerto Rico reaches a pleasant 24℃ during September. While generally considered warm, some people might find it a little on the cool side on entering the water.
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