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:
2026
2025
2024

The average sea water temperature in September of 2026 was 84.9°F. The highest and lowest sea temperatures during the month were 85.3°F and 84.4°F.

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

Which Antigua and Barbuda resorts have warmest sea in September?

Place name September 2026 September 2025
Barbuda 85.0°F 85.4°F
St John's 84.9°F 85.4°F
Antigua 84.8°F 85.3°F

Best time for vacation in St John's

Sunniest months:
March 6 days
January 5 days
February 5 days
Warmest months:
September 85.6 °F
August 85.1 °F
October 85.0 °F
Warmest sea temp:
September 84.6 °F
October 84.5 °F
August 83.9 °F
Coldest months:
February 79.7 °F
March 80.0 °F
January 80.2 °F
Rainiest months:
October 6 days
November 5 days
September 5 days
Windiest months:
July 17.8 mph
February 17.3 mph
January 17.2 mph

St John's on a weather map

Current weather
06:35
St John's
+81°F
W 9 mph
Feels like: +86°F
Precip.: 14%
Places in Antigua and Barbuda:
Name
°F
Antigua
+81°F
Barbuda
+82°F
St John's
+81°F
24 Hours Forecast
St John's
Local time: 06:35
September 19, saturday
0900
82°F
NW
9 mph
1200
84°F
NW
11 mph
1500
84°F
W
9 mph
1800
82°F
W
11 mph
2100
82°F
W
11 mph
September 20, sunday
0000
82°F
W
11 mph
0300
81°F
W
9 mph
0600
81°F
NW
10 mph
Units of measurement: °C / °F