Temperature
Hot by day, warm at night.
85°Ftypical Aug high
Typical range
Port Antonio
Jamaica · Caribbean
Port Antonio is most comfortable around December to April, its relatively drier stretch in a warm, humid climate.
Best time to go
12 mo · Typical year
Temperature range
73°F to 85°F
Rain
18 days/mo
Sunshine
11.1 h/day
Humidity feel
Humid year-round
When to visit
Month-by-month fit
Precipitation
Recurring showers across the month.
45%wet-day frequency
AmountWet-day chance
Sunshine
Cloudier spells limit sunshine.
11.5 hAug sunshine
Heat & humidity by month
Hot afternoons occur, with humid air through much of the month.
97%Aug share of very humid air hours
Easy airWarm airHumid airVery humid air
Hourly comfort pattern
In August, afternoons feel about 91° and nights feel near 87°.
WarmHotNight shading
Sea temperature
85°Aug sea temp
More detailIncludes sky, daypart comfort, and wind
Cloud cover
Partly cloudy across the month.
43%Aug clear sky
ClearCloud cover
Typical August day
August late afternoons are around 85°F, easing to about 83°F in early evening.
Avg temp Typical range
Morning84°F
Feels 91°F
Rain48%
Cloud60%
Humid airVery high
Sun intensityModerate
Midday85°F
Feels 91°F
Rain44%
Cloud59%
Humid airVery high
Sun intensityStrong
Late afternoon85°F
Feels 91°F
Rain35%
Cloud55%
Humid airVery high
Sun intensityModerate
Early evening83°F
Feels 90°F
Rain21%
Cloud54%
Humid airVery high
Sun intensityMinimal
Best windowWind pattern
Calm winds are typical in August.
9 mphAug Light breeze
Typical wind speed (mph)
Similar
Similar things to doSt. LuciaSaint LuciaSimilar things to doSamanaDominican RepublicSimilar things to doHolboxMexicoSimilar things to doSavusavuFiji
Want a side-by-side climate view? Compare Port Antonio with St. Lucia.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology