World Resorts Antigua and Barbuda St John's Weather

St John's 14 Days Forecast

29.08
sat
Day
86°F
W 19 mph
Precip.
7%
Night
82°F
SW 19 mph
Precip.
51%
30.08
sun
Day
82°F
NW 25 mph
Precip.
66%
Night
79°F
W 20 mph
Precip.
73%
31.08
mon
Day
77°F
W 11 mph
Precip.
29%
Night
81°F
W 19 mph
Precip.
71%
01.09
tue
Day
84°F
NW 19 mph
Precip.
13%
Night
82°F
W 15 mph
Precip.
18%
02.09
wed
Day
84°F
W 16 mph
Precip.
20%
Night
82°F
W 16 mph
Precip.
10%
03.09
thu
Day
84°F
W 15 mph
Precip.
10%
Night
82°F
W 17 mph
Precip.
32%
04.09
fri
Day
84°F
W 18 mph
Precip.
16%
Night
82°F
W 17 mph
Precip.
34%
05.09
sat
Day
84°F
W 20 mph
Precip.
27%
Night
82°F
W 17 mph
Precip.
20%
06.09
sun
Day
84°F
W 21 mph
Precip.
20%
Night
82°F
W 19 mph
Precip.
20%
07.09
mon
Day
84°F
W 21 mph
Precip.
15%
Night
82°F
W 17 mph
Precip.
19%
08.09
tue
Day
84°F
W 18 mph
Precip.
9%
Night
82°F
W 16 mph
Precip.
26%
09.09
wed
Day
84°F
W 16 mph
Precip.
14%
Night
82°F
W 19 mph
Precip.
9%
10.09
thu
Day
84°F
NW 20 mph
Precip.
41%
Night
82°F
W 18 mph
Precip.
55%
11.09
fri
Day
84°F
W 21 mph
Precip.
21%
Night
82°F
W 22 mph
Precip.
15%

Sea water temperature in August, °F

Show year:
2026
2025
2024

The average sea water temperature in August of 2026 was 84.2°F. The highest and lowest sea temperatures during the month were 84.9°F and 83.5°F.

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.

Air temperature in St John's, °F

Precipitation total in St John's, in.

* Charts above show average data for the last 3 years.

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
11:32
St John's
+86°F
W 19 mph
Feels like: +95°F
Precip.: 7%
Places in Antigua and Barbuda:
Name
°F
Antigua
+86°F
Barbuda
+84°F
St John's
+86°F
24 Hours Forecast
St John's
Local time: 11:32
August 29, saturday
1200
86°F
W
19 mph
1500
86°F
SW
19 mph
1800
82°F
SW
19 mph
2100
82°F
SW
20 mph
August 30, sunday
0000
82°F
SW
19 mph
0300
82°F
SW
13 mph
0600
82°F
NW
7 mph
0900
84°F
N
16 mph
Units of measurement: °C / °F