Antigua and Barbuda
Weather locations in Antigua and Barbuda
Choose a location in Antigua and Barbuda to view its available forecast products.
Antigua and Barbuda illustrated weather map
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Climate of Antigua and Barbuda
Country climate guideAntigua and Barbuda lie in the heart of the Caribbean, about 17 degrees north of the equator, where a tropical savanna climate removes most of the swing that other countries get between summer and winter. Days are warm all year and the sea never really drops below the low twenties, so the islands feel much the same in February as they do in August. What changes through the year is rain and wind rather than heat.
Main climate types
Both islands are classed as tropical savanna, with a dry season from December to April and a wetter stretch from May to November, driven by the seasonal migration of the intertropical convergence zone and by the northeast trade winds. Much of the rain arrives as short, intense showers rather than drizzle, especially across Barbuda and Antigua's hilly interior. Hurricanes forming between August and October add a second, less predictable kind of rain.
Temperatures
Monthly means on Antigua run from about 24 °C in January to about 27 °C in July, so the annual range is only around 3 °C. During the wet season, weather systems from the south-west can bring departures of several degrees below the norm for a day or two. At night the temperature rarely falls below about 18 °C on the coast, and the sea stays between roughly 24 °C and 28 °C all year.
Rainfall
Antigua receives on average about 900 to 1,000 mm a year, most of it in the summer and autumn months, while Barbuda, further east and flatter, tends to be somewhat wetter. The driest spell is December to April, when the trade winds blow almost continuously. Irrigation and water storage matter because the rain comes in bursts, and totals vary noticeably from year to year.
When to go
The dry season, roughly January to April, is the most reliable time to visit, with lower humidity, steadier winds and fewer interruptions, though it is also the windiest and the busiest. Late spring and early summer bring warmer water and more rain but far fewer crowds. In the wet season, build in slack days and watch the cyclone outlooks for June to November.