Average weather in September in Vieques, Puerto Rico

The average minimum temperature (usually the minimum temperature is noted during the night) in Vieques in September is 24.0°C (75.2°F). The amount of rain in September is high with an average of 134mm (5.3in). It rains on average a total of 18 days. The average maximum daytime temperature lies around 31.0°C (87.8°F). This makes September the hottest month of the year. If you enjoy looking at a blue sky and love the sun than this is a great time to go to Vieques with 235 hours of sun.


So what to wear in September? Visitors traveling to Vieques should plan on bringing a totally waterproof rain jacket since it will often be raining. Also bring your shorts or a skirt because it can be very warm or even hot. With a water temperature of around 29.0°C (84.2°F), this is a great month to swim so bring your swimwear.

No idea where to travel to this year? We now have a tool which suggests which destination suits your ideal climate conditions. Find out where to go with our weather planner.

For other monthly average weather and what to do in September look at the numbers below.

Monthly Averages in September

Show in Celsius

Min Temperature 75 °F
Max Temperature 87 °F
Water Temperature 84 °F
Chance of Rain 60%
Precipitation 5 in
Rainy Days 18
Sunshine Hours 235
* Climate data from: San Juan, Puerto Rico (66 KM, 41 Miles).

Where to stay in Vieques

Where to go in Puerto Rico in September

Find out more about the weather in Puerto Rico in September and which places have the best weather conditions in this month.

Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20-29ºC / 68-84ºF and not too much precipitation (less than 90mm / 3.5inch a month).

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in September.

Swimming
9/10
Cycling
7/10
Walking
7/10
Camping
6/10
Outdoor sports
7/10

Weather Forecasts for Vieques

FRI Aug 12
89°F | 78°F
Patchy rain possible

Patchy rain possible

SAT Aug 13
89°F | 76°F
Patchy rain possible

Patchy rain possible

SUN Aug 14
86°F | 78°F
Patchy rain possible

Patchy rain possible

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Vieques.

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.