Antigua and Barbuda weather
Our guide to the weather in Antigua and Barbuda during September
Located at the boundary between the Atlantic and Caribbean, Antigua and Barbuda are known for aquamarine reef-lined beaches, lush rainforests, and beautiful resorts. We've looked at the most up-to-date weather data for Antigua and Barbuda, covering the last 12 years up to 2026, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Antigua and Barbuda weather in September.
How warm is it in Antigua and Barbuda during September?
September is typically the hottest month in Antigua and Barbuda. The temperature hits about 29℃ during the day, falling away to a balmy 28℃ at night. Of course, the high humidity will make it feel even hotter. The UV index will be high at this time of year, so protection against skin and eye damage is needed. Try to limit exposure between 10am and 4pm. Apply broad spectrum SPF 30+ sunscreen every few hours, even if it's cloudy, or more frequently after sweating or swimming, and wear UV-blocking sunglasses too, and bear in mind that bright surfaces, such as sand and water increase UV exposure.
Does it rain in Antigua and Barbuda during September?
On average, there will be 8 rainy days during the month, amounting to 197.9mm in total. That's a significant amount of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. Due to the high temperature and humidity, you might expect lots of thunderstorms, however they're actually fairly infrequent at this time of year. On average, September will see just 4 days that produce a storm.
Is it windy in Antigua and Barbuda during September?
Expect moderate breeze becoming stronger at times during September, with occasional gusts up to 18mph. The high humidity and warm temperature will make the breeze feel warm, so any cooling effect will be limted.
How warm is the sea in Antigua and Barbuda during September?
The water around Antigua and Barbuda reaches a very pleasant 29℃ during September. This is very warm, and will feel bath-like. People who normally feel the cold will find this temperature perfectly acceptable. The hot air temperature and relatively high humidity will mean that you will feel comfortably warm when coming out of the water.
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Antigua and Barbuda Blog posts
From the UK's most popular travel bloggers
The 5 Best Boat Tours in Antigua & Barbuda
10th February 2025 by Mini Adventures
If you're dreaming of exploring the stunning waters of Antigua and Barbuda, you're in the right place. This guide highlights five fantastic boat tours that cater to a variety of tastes, interests, and budgets. One of the standout experiences from my time in Antigua was a day spent on a private charter yacht, sailing through the breathtaking Caribbean seas. Whether you're after relaxation, adventure, or a bit of both, there's a perfect boat tour waiting for you....
The Best Things to Do in St John’s, Antigua
1st August 2024 by Mini Adventures
Looking to delve deeper into the vibrant culture of Antigua and Barbuda, away from the usual beach resorts? A day trip to St. John's might just be the answer. As the capital city and commercial hub of Antigua and Barbuda, St. John's offers a bustling atmosphere, key attractions to explore, and a chance to indulge in some local shopping. Unlike the quaint towns scattered across the islands, St. John's boasts a more developed local scene, with around 22,000 residents calling it home....
The Ultimate Antigua and Barbuda Travel Guide
29th May 2024 by Mini Adventures
Planning a trip to Antigua and Barbuda? This guide is here to help you uncover the top activities, accommodation options, transportation tips, and more! Milly recently embarked on a two-week escape to Antigua, her first Caribbean adventure. Opting for a family break, they chose a charming local resort as their base but were eager to venture out and discover the island's treasures. While the idea of endless cocktails is appealing, Milly is not one to spend a fortnight lounging around......
Zip Lining in Antigua: A Rainforest Treetop Adventure
21st May 2024 by Mini Adventures
Looking to add a bit of excitement to your Antigua holiday? Look no further than Antigua's sole zip lining adventure! Prepare for an adrenaline-pumping experience as you glide through the lush rainforest canopy. While Antigua is famous for its tranquil, all-inclusive resorts, thrill-seekers can still find their fix here....
Driving in Antigua: Everything You Need To Know
21st May 2024 by Mini Adventures
Thinking of exploring beyond your resort and embarking on a road trip in Antigua and Barbuda? Discover all you need to know about renting a vehicle and driving on the island....
Devil’s Bridge National Park, Antigua: History & Visitor Guide
14th May 2024 by Mini Adventures
Antigua and Barbuda is known for its stunning beaches, boasting a total of 365 picturesque stretches of sand. However, a trip to Devil's Bridge National Park reveals a different side to the island's waters. With a chilling backstory and a powerful display of nature's force, Devil's Bridge is a must-see during your Antiguan escape....
Nelson’s Dockyard National Park, Antigua: History & Visitor’s Guide
9th May 2024 by Mini Adventures
Nestled in the scenic bay of English Harbour lies a must-visit destination for those exploring Antigua. Nelson's Dockyard, a charming complex steeped in cultural heritage, is a hub for visitors drawn to the island's top attractions. From its historic marina filled with impressive vessels to its connection to Nelson's Dockyard National Park, which includes Shirley Heights, Dow's Hill Interpretation Center, and Clarence House, this spot offers a blend of history and beauty....
Weather in Antigua and Barbuda
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