San Juan weather in September (North Puerto Rico, Puerto Rico)
This month is known as a warm month.
The average maximum daytime temperature in San Juan in September lies at 31.3°C (88.34°F).
The average minimum temperature goes down to around 23.8°C (74.84°F) (often the minimum temperature is noted at night).
September is part of the rainy season with an average precipitation of 272mm (10.7 inches). This makes it the wettest month of the year. There are generally around 16 rainy days. If you enjoy blue skies and sunshine, then this is a great time to go to San Juan with 236 hours of sun during the entire month.
San Juan, monthly averages in September
Where to stay in San Juan
Where to go in Puerto Rico in SeptemberFind out more about the weather in Puerto Rico in September and which places have the best weather conditions in this month.
What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do in September.
Interested in more climate information?
Weather and Climate provides you with all the information you need about the climate in San Juan.
Our site offers climate and forecast data for almost all countries in the world. Are you going to Puerto Rico? On this website you can find historical weather averages for many cities in Puerto Rico. Not sure yet where to go? We now have a tool which suggests which destination suits your ideal climate conditions. Find out where to go with our weather planner.