The Caribbean's southernmost islands including Anguilla, Antigua, Barbados, St Lucia, Grenada, Tobago are generally considered to be outside the hurricane zone. If you don't mind the rain, September can still be a good time to visit the Caribbean.
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Caribbean weather SeptemberThe more easterly islands including St Lucia and Trinidad are quite rainy at this time of year, while the western islands such as the Dominican Republic and Jamaica are relatively dry.
August through October are considered the peak months during hurricane season. Around 78% of tropical storm days, 87% of minor hurricane days, and 96% of the major hurricane days occur during those months, with early to mid-September being the most active time for tropical storms, according to the NOAA.
From July through September, Aruba experiences its highest temperatures. July highs average 89? (31.6?), with August and September highs averaging one degree more at 90? (32.2 ?). The reliable tradewinds mitigate the heat. Keep cool with snorkeling, scuba diving, and swimming from some of Aruba's best beaches.
The average high in St Lucia is 31ºC in September so you can look forward to plenty of time on the beach. Temperatures only fall to 24ºC at night, meaning you won't need anything more than shorts and t-shirt for the evenings. The sea temperature's 29ºC, which is perfect for swimming, while humidity's high.
September is the cheapest time to book a Caribbean holiday as it falls in the middle of hurricane season. However, don't let that put you off, as this usually just means there's a greater chance of showers at that time. Hurricane season in the Caribbean runs from June 1 to November 30.
The best time to visit Barbados is between July and November. Though these months fall within the Caribbean's hurricane season, hurricanes rarely hit the island, and you could attend one of the lively Crop Over Festival activities if you vacation during this time of year.
Aruba. Lying just off the coast of South America, desert-like Aruba is one of the best Caribbean islands to visit in September as it's a considerable distance from the seasonal storm belt and generally basks in sunshine year-round.