Trois-Rivières Weather in September
September in Trois-Rivières averages 29°C (84°F) during the day and 26°C (79°F) at night. It is the wettest month of the year, with 135 mm (5.3 in) of rainfall on average, so waterproof gear is a must.
Rainfall in Trois-Rivières in September
With this being the wettest month, keeping an umbrella on hand might save you from getting wet from a sudden shower. Analyzing past climate data, one can expect approximately 21 days of rain, averaging 135 mm (5.3 in). Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.
Temperature in Trois-Rivières in September
September in Trois-Rivières sees highs of 29°C (84°F) and lows of 26°C (79°F) overnight. Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights remain warm at around 26°C (79°F). For a more comfortable sleep, a cold shower before bed and a fan or air conditioning can make a big difference.
Sunshine in Trois-Rivières in September
The days are predominantly sunny, with an estimated total of around 218 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit Trois-Rivières. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Guadeloupe, check out our Trois-Rivières's climate page.
Trois-Rivières Temperature in September
Min Temperature
26°C (79°F)
Max Temperature
29°C (84°F)
Chance of Rain
70%
Precipitation
135 mm (5.3 in)
Rainy days
21 days
Humidity
82% *
Sunshine
218 hours *
Percentage Sunshine
*
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in Trois-Rivières typically stay consistent throughout September, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 24°C (75°F).
Average temperatures in September
Historical weather for Trois-Rivières in September
Browse day-by-day weather records for Trois-Rivières spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Trois-Rivières historical weather extremes in September
Based on weather observations in Trois-Rivières between 1990 and 2025, these are the recorded extremes during September.
- The hottest September day on record in Trois-Rivières reached 34°C (93°F) (September 1, 2005).
- The coldest September day was on September 14, 2004, with a maximum of 26°C (79°F).
- The coldest night in September in Trois-Rivières was on September 6, 2013, with a minimum of 20°C (68°F).
Best Places in Guadeloupe in September
Find out more about the weather in Guadeloupe and which places have the best travel conditions in this month. See all of Guadeloupe in September →
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What to Wear in Trois-Rivières in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Trois-Rivières 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 Guadeloupe, check out our Trois-Rivières's climate page.
Temperature Rainfall Sunshine Humidity
See the full Trois-Rivières climate overview or explore weather in Guadeloupe.
