Average weather for Puerto Rico in September
It's hot in September in Puerto Rico with an average temperature of 32°C. Temperatures this month range from a low of 32°C to a high of 33°C. At night, you can expect temperatures between 26°C and 27°C.
Start of September
The month of September starts in Puerto Rico with hot temps, averaging around 33°C during the day and nights around 27°C. You can expect regular precipitation, but there will also be some sunny days in the early part of the month. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
Mid September
By mid-September, daytime temps stay steady at around 33°C, with nights around 27°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
End of September
By the end of September, the average daytime temperature in Puerto Rico is around 33°C, while nighttime temps are about 27°C. A shower might pop up, but overall, the weather will be dry and sunny. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
In September, there is an average of 126 mm of precipitation, spread over 15 days. The wind speed is around 4 Bft, mostly coming from the East.
Puerto Rico in September |
New York | ||
|---|---|---|---|
 Average temperature |
32°C | 27°C | |
 Max. temperature |
33°C | 31°C | |
| Min. temperature |
32°C | -5°C | |
 Total precipitation |
126 mm | 57 mm | |
| Rainy days |
15 days | 9 days | |
August
UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is September a good time to visit Puerto Rico?
Looking for sun? September isn’t a good month to be in Puerto Rico. The temperature is nice, but there’s too much chance of rain.
The hurricane season in Puerto Rico runs from June to November.
Temperature records
With 35°C in 2023, Puerto Rico reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 27°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of 21°C to a highest value of 29°C.
Check out the climate of Puerto Rico for all months and discover the best travel time
The climate in Puerto Rico is based on weather data from San Juan. Other spots might have different weather. You can check out all destinations in Puerto Rico to get the full picture of the climate.
Daily Temperature in September in Puerto Rico
This chart shows the average daily high and low temperatures in September for Puerto Rico, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Weather experiences in September in Puerto Rico
Good
Humidity was high, but more pleasant than expected. Temperat... more
Daily Precipitation in September in Puerto Rico
The chart below shows the average daily precipitation in September for Puerto Rico, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 15 days of precipitation in Puerto Rico.
Daily UV index in September in Puerto Rico
This chart shows the average daily UV index in September in Puerto Rico, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Puerto Rico over the years
This chart shows the average temperature in September in Puerto Rico, measured in degrees Celsius, over the past few years.
Total precipitation in September in Puerto Rico over the years
This chart shows the average precipitation in September in Puerto Rico, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in September for Puerto Rico
Click on any day in September to get detailed info about the usual weather on that day in Puerto Rico. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Puerto Rico
The weather in September in Puerto Rico is rated 4 out of 5 stars by 1 visitor. Have you been to Puerto Rico? Share your weather experience to help other visitors.
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Humidity was high, but more pleasant than expected. Temperatures were generally ideal for outdoor activities.— This text is automatically translated to English
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Average weather in Puerto Rico by month
Click on a month below to see detailed weather info for Puerto Rico. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Puerto Rico for all months at once
