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Hourly Forecast
Daylight Hours
05:52
Sunrise
17:52
Sunset
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Waxing Gibbous
14:16
Moonrise
01:44
Moonset
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View stargazing scoreWeather in Puerto Rico today, September 21, 2026
Puerto Rico looks damp on September 21, 2026, so plan for wet spells during the day. Early travel and outdoor time should assume rain can arrive quickly. The morning carries the wetter risk, with rain chances near 76% and the highest odds around 11:00. Cloud is also thick early on, peaking near 75% around 05:00.
Temperatures climb from an overnight low near 24°C toward a daytime high of about 32°C. The air stays humid, with relative humidity between 52% and 97% and the peak around 19:00. Expect gentle winds, highest near 13:00 at 2.3 km/h.
Expect the wet theme to continue later, as rain odds reach 98% near 14:00. Cloud amounts hold near 80% around 23:00. Visibility stays generally good near 15.8 km on average, though it can drop toward 13.4 km in thicker cloud or showers. The sun rises at 05:52 and sets at 17:52, for a total of 11 hours 59 minutes of sunlight today.
The practical takeaway for Puerto Rico on September 21, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 32°C.
Frequently asked questions about weather in Puerto Rico
How warm does it get in Puerto Rico?
The warmest month in Puerto Rico is February, with average high temperatures of 27°C. The average temperature during this period is around 22°C.
How cold does it get in Puerto Rico?
The coldest month in Puerto Rico is July, with average low temperatures of 16°C. The average temperature during this period is around 19°C.
What is the wettest time of year in Puerto Rico?
The wettest month in Puerto Rico is June, with an average of 261mm of precipitation.
What is the driest time of year in Puerto Rico?
The driest month in Puerto Rico is January, with an average of 80mm of precipitation.
