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With daytime temperatures of 29°C (84°F) and nighttime lows of 24°C (75°F), December in Arima brings high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 121 mm (4.8 in) falls on average.
Should you favor a climate that's both dry and comfortably warm, January and February typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Pick a month to see the average temperature, rainfall and sunshine in Arima - and find the best time to visit.
49-year average (1976-2025)
Based on our historical records, temperatures in Arima typically stay consistent throughout December, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 23°C (73°F).
Browse day-by-day weather records for Arima spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Our historical data for Arima spans 2003 to 2025, revealing these weather extremes.
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 December →
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).
Warm but pleasant conditions in Arima in December. 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. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity Water Temp
See the full Arima climate overview or explore weather in Trinidad & Tobago.
Where to go in December - average daytime high across popular destinations.
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