Measurements:
°C
°F
CURRENT WEATHER
16:28
St John's
88°F
W 19 mph
Feels like: 98°F
Precip: 36%
World Resorts Antigua and Barbuda St John's Weather

7 Day Weather Forecast

09.08
tue
DAY
88°F
W 19 mph
precip
15%
NIGHT
86°F
W 22 mph
precip
9%
09.09
wed
DAY
88°F
W 22 mph
precip
19%
NIGHT
86°F
W 21 mph
precip
23%
09.10
thu
DAY
88°F
W 21 mph
precip
23%
NIGHT
86°F
W 22 mph
precip
25%
09.11
fri
DAY
88°F
W 19 mph
precip
16%
NIGHT
86°F
W 18 mph
precip
17%
09.12
sat
DAY
88°F
W 19 mph
precip
18%
NIGHT
86°F
W 19 mph
precip
19%
09.13
sun
DAY
88°F
W 17 mph
precip
36%
NIGHT
86°F
W 16 mph
precip
10%
09.14
mon
DAY
88°F
W 17 mph
precip
5%
NIGHT
86°F
W 17 mph
precip
9%

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

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for St John's was 29.6°F. The maximum and minimum values were 29.4°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 89.5 °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