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Climate - Antigua And Barbuda


Average weather, temperature, rainfall, sunshine

Flag - Antigua And Barbuda

Map - Antigua And Barbuda

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Antigua and Barbuda - The climate in short



The climate in Antigua and Barbuda is tropical, hot and humid all year round, with a relatively cool, dry season from January to mid-April and a hot, humid, and rainy season from mid-June to mid-November.
In the cool and dry season, the northeast trade winds, constant winds typical of tropical climates, blow steadily and with moderate intensity, while in the hot and rainy season, these winds are more irregular, and may have some breaks, increasing the feeling of sultriness.
Between them, there are two transitional periods: from mid November to early January (when the northeast wind starts to blow, the temperature decreases a bit and the weather gets better) and from mid-April to Mid-June (when both the temperature and the frequency of downpours gradually increase).
The average daily temperature is around 25 °C (77 °F) in January and February, while it goes up to around 28 °C (82.5 °F) from June to September.
The rainfall is not so abundant because the islands are pretty flat; the only elevation of some importance is Mount Obama, 402 meters (1,319 feet) high, in the southwest of Antigua Island.
In Codrington, on the island of Barbuda, rainfall amounts to 1,165 mm (46 in) per year, while in Antigua, it amounts to 1,000 mm (40 in) in the north of the island (see St. John's and the airport), to 1.100 mm (43 in) in the southeastern part, and to 1,300 mm (51 in) in the southwest, near Mount Obama.
In order to simplify, we can divide the year into two periods, a dry one from January to June and a rainy one from July to December. The rainiest period runs from September to November, while the driest months are February and March.

Antigua and Barbuda is a small Caribbean state located at 17 degrees north latitude and belonging to the Commonwealth. In addition to the two main islands, Antigua and Barbuda, we find some smaller islands, such as Green Island, Guiana Island, Long Island, and Redonda, plus some islets.

The climate in detail


  • St. John's
  • Sea temperature
  • Hurricanes
  • When to go
  • What to pack

St. John's



Climate chart - St. John's

Here are the average temperatures of St. John's, the capital, located on the island of Antigua.
St. Johns - Average temperatures (1991-2020)
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January22.428.425.4728377.7
February22.228.525.3728377.6
March22.628.925.7738478.3
April23.229.526.4748579.5
May24.230.227.2768680.9
June25.130.727.9778782.3
July25.23128778882.5
August25.331.328.3778882.9
September24.831.328.1778882.5
October24.430.927.7768881.8
November23.93026.9758680.5
December232926738478.8
Year23.93026.857585.980.5

As mentioned, St. John's is located on the north side of the island and receives about 1,000 mm (40 in) of rain per year. Here is the average precipitation.
St. Johns - Average precipitation
MonthMillimetersInchesDays
January552.211
February451.89
March451.87
April702.87
May903.59
June602.48
July853.312
August1003.913
September1305.112
October1405.513
November1355.312
December853.312
Year105041.3125

The rains occur throughout the year especially in the form of downpours or thunderstorms, which could be intense, but generally do not last long, so they do not reduce too much the sunshine hours; sometimes, however, there may be a more intense wave of bad weather.
In fact, the amount of sunshine is good all year round, as can be seen in the following table.
St. Johns - Sunshine hours
MonthAverageTotal
January8250
February8225
March8.5260
April8.5255
May8250
June8.5250
July8.5270
August8.5265
September8235
October7.5235
November7.5230
December7.5230
Year8.12955

Antigua

Sea temperature



The sea temperature ranges from 26 °C (79 °F) to 29 °C (84 °F), so the sea is warm enough for swimming all year round.
St. Johns - Sea temperature
MonthCelsius (°C)Fahrenheit (°F)
January26.580
February2679
March2679
April26.580
May27.582
June2882
July2883
August28.583
September2984
October28.584
November2883
December27.581
Year27.681.6

Hurricanes



The greatest danger comes from tropical storms and cyclones, called hurricanes in the Caribbean area, which can pass over the islands from June to November, though they are most likely from August to October. In early September 2017, the archipelago was hit hard by Hurricane Irma.

When to go



The best time to visit Antigua and Barbuda is from December to April, since it is the least rainy and the least hot period of the year; in particular, the months of February and March stand out as the driest.
In May, both heat and moisture increase, but the rains are still not abundant (except during certain years), and we are still out of the hurricane season.
In the summer months, August and September are a bit rainier in comparison with June and July, and hurricanes are more likely as well.

What to pack



From December to April: bring light clothing, and possibly a sweatshirt for the evening from December to March. A sun hat, sunscreen.
From May to November: bring lightweight clothing, and possibly a light sweatshirt and a light raincoat for thunderstorms; a sun hat, and sunscreen.
When going to the reef, you can bring snorkeling equipment, including water shoes or rubber-soled shoes.

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