Measurements:
°C
°F
Port Antonio
84°F
NW 9 mph
Feels like: 92°F
Precip: 24%
World Resorts Jamaica Port Antonio Weather

Port Antonio Sea Water Temperature

Current Sea Water Temperature:
+89.8°F
Maximum Sea Water Temperature in October: 92.0°F
Minimum Sea Water Temperature in October: 86.8°F
Average water temperature in October: 89.4°F

Sea Water Temperature for the Last 10 Days:

October 18 89.8°F October 13 89.4°F
October 17 89.4°F October 12 89.8°F
October 16 89.4°F October 11 89.8°F
October 15 89.0°F October 10 89.8°F
October 14 89.2°F October 09 90.2°F

When is the Warmest Sea for Port Antonio?

According to our data for the last three years for Port Antonio the highest average sea water temperature was in September, October and August.

Average Water Temperature by Month, °F

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Port Antonio was 89.7°F. The maximum and minimum values were 88.4°F and 90.6°F respectively.

Sea Water Temperature in October

Select Year: 2026 2025 2024

The average sea surface temperature in October 2026 for Port Antonio was 89.8°F. The maximum and minimum values were 89.0°F and 90.6°F respectively.

Sea Water Temperature in August

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Port Antonio was 89.1°F. The maximum and minimum values were 87.8°F and 90.4°F respectively.

Best Time to Visit Port Antonio
The most sunny months:
July 11 days
May 9 days
April 9 days
The most warm months:
August 90.2 °F
September 90.1 °F
July 90.0 °F
Warmest sea temperature:
September 89.6 °F
October 89.3 °F
August 89.0 °F
The most cold months:
February 83.5 °F
January 83.5 °F
March 84.1 °F
The most rainy months:
October 8 days
November 6 days
December 6 days
The most windy months:
June 11 mph
July 10 mph
May 10 mph

Port Antonio on the Weather Map

Jamaica Resorts:
NAME
F°
Kingston +74
Montego Bay +84
Negril +80
Ocho Rios +88
Port Antonio +84
Runaway Bay +86
Westmoreland +80
24 Hours Weather Forecast
Port Antonio
Local time: 22:20
19 oct, monday
0000 84°F
NW
10 mph
0300 82°F
NW
7 mph
0600 82°F
N
4 mph
0900 86°F
W
6 mph
1200 88°F
W
8 mph
1500 88°F
W
7 mph
1800 84°F
W
5 mph
2100 82°F
N
5 mph