Port Antonio Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Port Antonio.
Climate overview of Port Antonio
Port Antonio, Portland, Jamaica, has a stable climate with little temperature variation across the year. Average daytime temperatures hover around 28°C (82°F), peaking in August at 30°C (86°F) and dipping in February to 27°C (81°F).
The city has a wet climate, receiving around 1455 mm (57 in) of rainfall per year. October is the wettest month. July is the sunniest month, averaging 8.8 hours of sunshine per day.
Port Antonio Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Port Antonio — and find the best time to visit.
Monthly Temperature in Port Antonio
With minimal seasonal shifts, Port Antonio experiences a constant climate year-round. On average, daytime temperatures range from a comfortable 30°C (86°F) in August to a comfortable 27°C (81°F) in February.
Nighttime temperatures range from 25°C (77°F) in August to 23°C (73°F) in February.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Port Antonio
Port Antonio has a notably wet climate with abundant precipitation, recording 1455 mm (57 in) of rainfall per year. The seasons in Port Antonio bring significant changes in precipitation. The wettest month, October, receives heavy rainfall, with an average of 192 mm (7.6 in) of precipitation. This rainfall is distributed across 16 rainy days.
In contrast, the driest month, February, experiences much less rainfall, totaling 76 mm (3 in) over 6 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Port Antonio Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Port Antonio
The sunniest days in Port Antonio occur in July, with around 8.8 hours of daily sunshine. Even in October, the least sunny month, Port Antonio doesn't shy away from the sun, still enjoying a comfortable 7.5 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Port Antonio by Month
The relative humidity is high throughout the year in Port Antonio.
The city experiences its highest humidity in October, reaching 81%. In July, the humidity drops to its lowest level at 70%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Port Antonio
It's smart to plan your activities during the cooler morning hours or take advantage of the refreshing evenings.
Note that October has the heaviest precipitation of the year. Looking for inspiration on where to travel this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
Frequently asked questions about the climate in Port Antonio
What is the best time to visit Port Antonio?
January, February, March and April typically offer the most optimal weather in Port Antonio. In contrast, August and September tend to have less optimal conditions.
What temperatures can I expect in Port Antonio?
Daytime highs range from 27°C (81°F) in February to 30°C (86°F) in August. Nighttime lows range from 23°C (73°F) to 25°C (77°F). Temperatures stay relatively stable year-round.
How much rain does Port Antonio get?
Annual rainfall is around 1455 mm (57 in). October is the wettest month with 192 mm (7.6 in), while February is the driest with 76 mm (3 in).
How sunny is Port Antonio?
Port Antonio receives around 2,964 hours of sunshine per year. July is the sunniest month with 264 hours, while October is the cloudiest with just 226 hours. Overall, Port Antonio enjoys abundant sunshine.
Port Antonio 3-Day Forecast
Port Antonio 3-Day Forecast
Port Antonio on the map
Port Antonio is highlighted — select any city to see its climate.
Popular this month
Where to go in July — average daytime high across popular destinations.
Treasure Beach
31°C (88°F) Falmouth32°C (90°F) Runaway Bay32°C (90°F) Ocho Rios
32°C (90°F) Montego Bay
32°C (90°F) Kingston30°C (86°F) Negril31°C (88°F) Port Antonio30°C (86°F) 
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.