Weather in Antigua in July

How July compares

July is the 3rd warmest month of the year in Antigua and ranks 65th of 134 destinations we compare for July - see where else is hot in July. Against London's average high of 21.8°C in July, Antigua is 6.9°C warmer by day and 12.5°C warmer at night.

Daytime and night-time in July

The typical July day in Antigua peaks at 28.7°C, but that is an average: the warmest 10% of days reach 29.6°C or more. About 100% of days top 25°C and 1 in 15 pass 30°C. Nights average 26.0°C; one night in ten drops to 25.2°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest July day here reached 31.6°C (2017-07-09) and the coldest night 24.4°C (2000-07-29).

Rain in July

Wet (more than 8 rainy days): about 17 days with 1 mm or more, 79 mm in total. Year to year it varies a lot - the wettest July was 2011 with 159 mm, the driest 1991 with 22 mm. Humidity averages 78%, which makes the heat feel heavier than the thermometer suggests.

Sea temperature in July

The sea averages 28.1°C - warm enough to swim (22°c+). Depending on the year it ranges from 27.7°C to 28.6°C. For the warmest sea here, come in September (28.9°C).

Sunshine and daylight

Around 6.7 hours of sunshine a day (estimated from cloud cover), 12.9 hours of daylight: the sun rises about 05:42 and sets about 18:45 local time in mid-July. Average cloud cover is 48%.

Is July a good time to visit Antigua?

It is a reasonable choice: hot days but expect showers. The best months for Antigua on our scoring are March, February, April; months averaging 25°C or more: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec.

Warm seas, but little relief from the heat

The sea averages 28.1°C, making July well suited to travellers who want comfortable swimming rather than a bracing dip. On land, humidity of 78% makes the warmth feel more demanding than the daytime temperature alone might suggest. Only 7% of days reach 30°C, so the catch is persistent warmth rather than frequent extreme highs. Choose loose, breathable clothing and leave room for shade breaks around midday. Evenings are warm too, so light clothes remain useful after sunset. If you find warm nights tiring, prioritise accommodation with effective cooling; this is not a month when you can rely on a cool evening to reset.

Allow for rain without writing off outdoor time

July is a wet month, with about 17 days recording rain, so a rigid schedule of outdoor activities is a poor fit. That does not mean you should expect every rainy day to be a washout: there are about 6.7 hours of sunshine a day within 12.9 hours of daylight. Those averages support a mix of swimming, outdoor time and breaks under cover, rather than a promise of clear skies. Pack a light waterproof and keep anything that needs to stay dry protected. With a flight from London taking about 9 hours, July makes more sense if warmth matters more to you than dependable dry weather.