Arouca Weather in September
During September, Arouca experiences very high daytime temperatures of 31°C (88°F) and cooler nights around 25°C (77°F). Expect quite a bit of rainfall. Around 140 mm (5.5 in) is typical.
Rainfall in Arouca in September
Based on our climate data of the past 30 years, about 19 days of rain are anticipated, with 140 mm (5.5 in) on average. Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in Arouca in September
In September, Arouca sees very high temperatures, with highs of 31°C (88°F). Nights drop to around 25°C (77°F). Sunshine and humidity can make it feel even warmer than the raw temperature suggests. Nights are warm at 25°C (77°F). It's worth making sure your accommodation has decent ventilation or air conditioning.
Sunshine in Arouca in September
Enjoy a sunny month with about 197 hours of sunshine, the clear skies make Arouca even more beautiful.
Average water temperature in September
The water is 28°C (82°F) this month — warm enough that getting in requires no effort at all. Good conditions for swimming, snorkeling, or just floating around.September in Arouca can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Trinidad & Tobago, check out our Arouca's climate page.
Arouca Temperature in September
Min Temperature
25°C (77°F)
Max Temperature
31°C (88°F)
Water Temperature
28°C (82°F) *
Chance of Rain
64%
Precipitation
140 mm (5.5 in)
Rainy days
19 days
Humidity
84% *
Sunshine
197 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Arouca typically stay consistent throughout September, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 24°C (75°F).
Average temperatures in September
Historical weather for Arouca in September
Browse day-by-day weather records for Arouca spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Arouca historical weather extremes in September
Based on 35 years of weather observations (1990-2025), these are the most extreme conditions recorded in Arouca.
- Arouca recorded its highest September temperature of 36°C (97°F) on September 17, 2017.
- The coldest September day was on September 7, 1991, with a maximum of 25°C (77°F).
- The lowest overnight temperature recorded in September was 21°C (70°F) (September 2, 2006).
Best Places in Trinidad & Tobago in September
Find out more about the weather in Trinidad & Tobago and which places have the best travel conditions in this month. See all of Trinidad & Tobago in September →
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What to Wear in Arouca in September
Warm but pleasant conditions in Arouca in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. With water temperatures around 28°C (82°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Arouca in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Trinidad & Tobago, check out our Arouca's climate page.
Temperature Rainfall Sunshine Humidity Water Temp
See the full Arouca climate overview or explore weather in Trinidad & Tobago.
