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Castara Weather in September
In Castara, September brings high daytime temperatures around 30°C (86°F), with nights cooling to 27°C (81°F). Expect quite a bit of rainfall this month.
Rainfall in Castara in September
Climate statistics over the past 30 years suggest around 18 days of rain, with 166 mm (6.5 in) average for the month. 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 Castara in September
Daytime highs in Castara in September reach 30°C (86°F), with nights around 27°C (81°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. With lows of 27°C (81°F), it stays warm throughout the night. A cold shower before going to sleep is one of the easiest ways to cool down before bed.September in Castara 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.
Castara Temperature in September
Min Temperature
27°C (81°F)
Max Temperature
30°C (86°F)
Chance of Rain
61%
Precipitation
166 mm (6.5 in)
Rainy days
18 days
Castara Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Castara - and find the best time to visit.
Daily Historical Temperatures
44-year average (1978-2025)
Based on our historical records, temperatures in Castara typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in September
Historical weather records for Castara in September
Browse day-by-day weather records for Castara spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Castara historical weather extremes in September
The extremes listed below come from historical weather data collected in Castara from 1990 through 2025.
- The warmest day in September was on September 24, 2024, with a maximum of 33°C (91°F).
- On September 7, 1994, Castara saw its coldest September day with temperatures maxing out at 26°C (79°F).
- Nighttime temperatures dropped to 22°C (72°F) on September 16, 2011, marking the coldest September night on record.
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 →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Castara in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything!
What To Do in Castara in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling7/10 -
Walking7/10 -
Camping7/10 -
Outdoor sports7/10
Castara 3-Day Forecast
More climate data for Castara
See the full Castara climate overview or explore weather in Trinidad & Tobago.
Popular in September
Where to go in September - average daytime high across popular destinations.
San Juan
30°C (86°F) Piarco31°C (88°F) Port-of-Spain
30°C (86°F) Crown Point
30°C (86°F) Castara30°C (86°F) Buccoo30°C (86°F) Scarborough30°C (86°F) Bon Accord Village30°C (86°F) Bucket list
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