Anguilla
Weather locations in Anguilla
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Anguilla illustrated weather map
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Climate of Anguilla
Country climate guideAnguilla is a small, low-lying coral island in the northern Caribbean, lying about 15 degrees north of the equator on the atlantic side of the Antilles. Its climate is tropical and marine, with an unusually narrow band of temperature through the year; the surrounding sea, which stays near 26 degrees Celsius, keeps winters and nights mild. There is no cold season here, only a drier and a wetter part of the year.
Main climate types
In the conventional grouping the island belongs to the tropical rainforest and tropical savanna classes, though in practice the distinction hardly matters because rain is steady and no month is really dry. There is no high ground at all: the highest point is only a few metres above sea level, so nothing forces air upward and temperatures stay flat. Coral Reef and the eastern hills catch somewhat more cloud than the south-west. The main variability in the weather comes from the atlantic hurricane season, which affects the island most from August to October and occasionally in November.
Temperatures
Monthly means run at roughly 25 degrees Celsius in the coolest months and about 28 in the warmest, a variation of only three degrees. Because the sea holds the temperature in check, daytime highs and overnight lows rarely differ by more than five or six degrees at a time. Humidity is high throughout the year, but the trade winds, which blow from the north-east for much of the time, provide the main relief from it. Sea temperatures are pleasant enough for swimming in every month.
Rainfall
Annual rainfall is around 900 millimetres, with the wettest months usually September and October and the driest stretch from January into April. Showers arrive quickly and can deliver a lot of rain in a single afternoon, so the island can flood as easily as it suffers water shortages. The coral reef drains rainfall off the flat ground very fast.
When to go
The dry months from January to April are the best time to visit, when the trade winds are steady and the humidity slightly lower than elsewhere in the Caribbean. The rest of the year is warmer and wetter, and anyone planning outdoor activity should follow local hurricane warnings from August onwards.