Measurements:
°C
°F
San Juan
80°F
SE 11 mph
Feels like: 82°F
Precip: 0%
World Resorts Puerto Rico San Juan Weather September Weather in San Juan

San Juan Weather: September

Average Day Temperature: 91.2°F
Average Night Temperature: 82.3°F
Sea Water Temperature: 88.6°F
Number of Sunny Days: 7 days
Sunshine Hours: 12.0 - 12.5 hours
Number of Rainy Days: 4 days
Precipitation Totals: 3.3 in

Air Temperature in September, °F

Select Year: 2023 2022 2021

The highest day temperature in September 2023 was 100°F. The lowest night temperature was 82°F. The average values for day and night temperatures during September were 92.6°F и 85.5°F respectivly.

San Juan Water Sea Temperature in September, °F

Select Year: 2023 2022 2021

The average sea surface temperature in September 2023 for San Juan was 90.3°F. The maximum and minimum values were 89.6°F and 90.8°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in September are cloudy but you can also expect sunny or gloomy days.

Precipitation Totals in September, in

Precipitation total in September for San Juan is 3.3 in. It makes september one of the most rainy months of the year.

Wind Speed in September, mph

The average wind speed in September is 9.3 mph. It makes September one of the most windless months of the year for San Juan.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for San Juan in September is 6.9 hours.

Best Time to Visit San Juan
The most sunny months:
June 11 days
March 10 days
October 9 days
The most warm months:
September 91.2 °F
August 91.1 °F
July 90.8 °F
Warmest sea temperature:
September 88.6 °F
October 88.6 °F
August 87.6 °F
The most cold months:
February 83.9 °F
January 84.2 °F
March 84.7 °F
The most rainy months:
November 5 days
October 5 days
September 4 days
The most windy months:
July 12 mph
February 12 mph
June 12 mph

San Juan on the Weather Map

Puerto Rico Resorts:
NAME
Aguadilla +80
Arecibo +80
Isabella +78
Mayaguez +78
Ponce +82
San Juan +80
24 Hours Weather Forecast
San Juan
Local time: 17:35
28 mar, thursday
1800 80°F
SE
11 mph
2100 78°F
SE
9 mph
29 mar, friday
0000 76°F
SE
8 mph
0300 76°F
SE
9 mph
0600 76°F
SE
7 mph
0900 80°F
SE
9 mph
1200 84°F
SE
10 mph
1500 84°F
SE
10 mph