World Resorts Antigua and Barbuda St John's Weather

St John's Sea Temperature in September

Average sea water temperature in September:
+84.6°F
Minimum sea water temperature in September: 87.4°F
Maximum sea water temperature in September: 82.0°F

Daily sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 85.4°F. The highest and lowest sea temperatures during the month were 85.8°F and 84.9°F.

Monthly sea water temperature in St John's, °F

Which Antigua and Barbuda resorts have warmest sea in September?

Place name September 2025 September 2024
Barbuda 85.4°F 86.3°F
St John's 85.4°F 86.3°F
Antigua 85.3°F 86.2°F

Best time for vacation in St John's

Sunniest months:
March 7 days
January 5 days
February 5 days
Warmest months:
September 85.6 °F
August 85.2 °F
July 85.0 °F
Warmest sea temp:
September 84.6 °F
October 84.5 °F
August 83.9 °F
Coldest months:
February 79.8 °F
March 80.1 °F
January 80.3 °F
Rainiest months:
October 6 days
November 5 days
September 5 days
Windiest months:
July 17.8 mph
February 17.5 mph
January 17.3 mph

St John's on a weather map

Current weather
22:47
St John's
+77°F
SW 3 mph
Feels like: +81°F
Precip.: 100%
Places in Antigua and Barbuda:
Name
°F
Antigua
+77°F
Barbuda
+79°F
St John's
+77°F
24 Hours Forecast
St John's
Local time: 22:47
January 07, wednesday
0000
77°F
SW
3 mph
0300
77°F
W
6 mph
0600
75°F
NW
6 mph
0900
77°F
NW
8 mph
1200
79°F
NW
9 mph
1500
79°F
NW
8 mph
1800
79°F
W
8 mph
2100
77°F
W
11 mph
Units of measurement: °C / °F