World Resorts Antigua and Barbuda St John's Weather

St John's 14 Days Forecast

19.07
sun
Day
82°F
W 18 mph
Precip.
17%
Night
82°F
W 16 mph
Precip.
19%
20.07
mon
Day
82°F
W 16 mph
Precip.
7%
Night
81°F
W 11 mph
Precip.
61%
21.07
tue
Day
82°F
W 12 mph
Precip.
8%
Night
81°F
NW 14 mph
Precip.
27%
22.07
wed
Day
82°F
W 16 mph
Precip.
8%
Night
81°F
W 16 mph
Precip.
15%
23.07
thu
Day
82°F
W 20 mph
Precip.
8%
Night
81°F
W 19 mph
Precip.
25%
24.07
fri
Day
82°F
W 19 mph
Precip.
9%
Night
81°F
W 20 mph
Precip.
16%
25.07
sat
Day
82°F
W 20 mph
Precip.
18%
Night
81°F
W 19 mph
Precip.
39%
26.07
sun
Day
82°F
W 16 mph
Precip.
18%
Night
81°F
W 16 mph
Precip.
16%
27.07
mon
Day
84°F
W 20 mph
Precip.
7%
Night
81°F
W 18 mph
Precip.
17%
28.07
tue
Day
82°F
W 21 mph
Precip.
18%
Night
81°F
W 17 mph
Precip.
13%
29.07
wed
Day
84°F
W 19 mph
Precip.
14%
Night
82°F
W 18 mph
Precip.
16%
30.07
thu
Day
84°F
W 19 mph
Precip.
7%
Night
81°F
SW 21 mph
Precip.
19%
31.07
fri
Day
82°F
W 22 mph
Precip.
9%
Night
81°F
W 19 mph
Precip.
28%
01.08
sat
Day
82°F
W 20 mph
Precip.
12%
Night
82°F
W 18 mph
Precip.
22%

Sea water temperature in July, °F

Show year:
2026
2025
2024

The average sea water temperature in July of 2026 was 83.0°F. The highest and lowest sea temperatures during the month were 83.7°F and 82.6°F.

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 84.7°F. The highest and lowest sea temperatures during the month were 85.5°F and 84.2°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 85.2 °F
July 85.0 °F
Warmest sea temp:
September 84.6 °F
October 84.5 °F
August 83.9 °F
Coldest months:
February 79.7 °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
09:08
St John's
+82°F
W 20 mph
Feels like: +88°F
Precip.: 8%
Places in Antigua and Barbuda:
Name
°F
Antigua
+82°F
Barbuda
+81°F
St John's
+82°F
24 Hours Forecast
St John's
Local time: 09:08
July 19, sunday
1200
82°F
W
18 mph
1500
82°F
W
16 mph
1800
82°F
W
17 mph
2100
81°F
W
16 mph
July 20, monday
0000
82°F
W
16 mph
0300
82°F
W
17 mph
0600
81°F
W
19 mph
0900
82°F
W
19 mph
Units of measurement: °C / °F