Measurements:
°C
°F
CURRENT WEATHER
17:53
St John's
86°F
W 14 mph
Feels like: 94°F
Precip: 9%
World Resorts Antigua and Barbuda St John's Weather

7 Day Weather Forecast

09.28
mon
DAY
88°F
W 16 mph
precip
20%
NIGHT
86°F
W 14 mph
precip
18%
09.29
tue
DAY
88°F
W 17 mph
precip
20%
NIGHT
86°F
W 19 mph
precip
30%
09.30
wed
DAY
88°F
W 17 mph
precip
21%
NIGHT
86°F
W 18 mph
precip
34%
10.01
thu
DAY
88°F
W 16 mph
precip
5%
NIGHT
86°F
W 16 mph
precip
23%
10.02
fri
DAY
88°F
W 14 mph
precip
15%
NIGHT
86°F
W 14 mph
precip
6%
10.03
sat
DAY
88°F
W 15 mph
precip
11%
NIGHT
86°F
W 14 mph
precip
22%
10.04
sun
DAY
88°F
W 14 mph
precip
11%
NIGHT
86°F
W 14 mph
precip
20%

St John's Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for St John's was 29.5°F. The maximum and minimum values were 29.1°F and 29.9°F respectively.

St John's on the Weather Map

Best Time to Visit St John's
The most sunny months:
March 6 days
January 5 days
February 5 days
The most warm months:
September 89.4 °F
August 89.0 °F
October 88.9 °F
Warmest sea temperature:
September 88.5 °F
October 88.3 °F
August 87.6 °F
The most cold months:
February 83.0 °F
March 83.3 °F
January 83.6 °F
The most rainy months:
October 6 days
November 5 days
September 5 days
The most windy months:
July 17 mph
February 17 mph
January 17 mph
more details