St John's weather

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Usually in September
- 31
- 25
- 7
Weather by month
Now Today
- 30
- 6
5-day forecast

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The weather guide for St John's, Antigua shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by MeteoBlue. Find out more about our data sources.

Which is the hottest month in St John's?

The hottest time of year in St John's is normally August. Expect maximum daytime temperatures to reach 31°C with very high heat and humidity.

Which month has the most rain in St John's?

In terms of rainfall, September is usually the wettest month in St John's with 140mm on average. There are normally 17 days in September with some rain.

When is it sunniest in St John's?

The sunniest time of year in St John's is normally January with bright sunshine on average for 67% of daylight hours; that's 8 hours of sunshine per day.

When is the sea warmest in St John's?

The sea is usually at its warmest in St John's in September when the water temperature reaches 29°C.

Metric (°C / mm) | Imperial (°F / inches)

Compare St John's weather with the USA

Below the St John's weather chart shows average maximum daytime temperature for St John's, Antigua and the USA (Washington).

Maximum daytime temperature (°C)

St John's, Antigua

USA (Washington)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Metric (°C / mm) | Imperial (°F / inches)

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TUI discount code: £150 off summer 2021 holidays

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Save £100 on summer 2021 holidays with TUI
Plus testing packages + Covid cover & free changes
Plus testing packages + Covid cover & free changes
Travel before 31st October 2021 (inclusive)

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Tropical storm risk: St John's, Antigua hurricane season

% of month affected by tropical storms

<1%

2.8%

4.4%

1.5%

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

The St John's, Antigua tropical storm risk chart above shows the hurricane season. The chart was processed from data supplied by the US Meteorological Agency (NOAA). Find out more about our data sources.

More about tropical storms