August in Port Antonio averages 30°C (86°F) during the day and 25°C (77°F) at night. Quite a bit of rainfall is typical this month, with around 119 mm (4.7 in) on average. An umbrella is a good idea.
Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March and April typically offer the best weather for Port Antonio.
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Pick a month to see the average temperature, rainfall and sunshine in Port Antonio - and find the best time to visit.
50-year average (1976-2025)
Based on our historical records, temperatures in Port Antonio typically stay consistent throughout August, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 27°C (81°F).
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Port Antonio spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Our historical data for Port Antonio spans 2004 to 2026, revealing these weather extremes.
Find out more about the weather in Jamaica and which places have the best travel conditions in this month. See all of Jamaica in August →
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 Port Antonio in August. 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. 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
See the full Port Antonio climate overview or explore weather in Jamaica.
Where to go in August - average daytime high across popular destinations.
Treasure Beach
31°C (88°F) Falmouth
32°C (90°F) Runaway Bay32°C (90°F) Ocho Rios
32°C (90°F) Montego Bay
32°C (90°F) Kingston31°C (88°F) Negril31°C (88°F) Port Antonio30°C (86°F) Need travel inspiration? Check out our bucket list articles and be inspired.
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