Climate Insights for Antigua

The climate in Antigua is warm and mild. The average annual temperature is 20°C and approximately 58mm of precipitation falls per year. October is the wettest month, receiving around 14mm of rainfall. Antigua is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, September, October. The coldest months are February, January, March, when temperatures can drop to 15°C.

Antigua sees moderate temperature variation throughout the year, ranging from 15°C to 26°C. The warmest month is August, when average highs reach 26°C and the mean temperature sits around 23°C. February is the coolest month, with minimum temperatures around 15°C and an average of 17°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between October and November, with a 2°C shift in average temperatures.

Antigua is a quite dry location, receiving approximately 58mm of precipitation annually, which averages out to around 5mm per month. The wettest month is October, averaging 14mm of rainfall. February and September also tend to see above-average precipitation. The driest month is July, with just 0mm. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Antigua is moderately windy, with an average annual wind speed of 25km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 30km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in October, with average winds dropping to 21km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 9km/h gap between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 24km/h in winter, 26km/h in spring, 28km/h in summer, 23km/h in autumn.

It is currently spring in Antigua, which began on March 20, 2026. Antigua is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 26°C, while the coldest stretch bottoms out in February near 15°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Antigua is during January, February, March, April, May, June, July, August, September, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 5mm per month. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Antigua based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.