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Charlestown

Weather in Чарлстаун: What to Expect by Month

Photo: Aaron Vos, CC BY-SA 2.5

Weather overview

Чарлстаун enjoys a tropical climate with warm temperatures year-round, making it a welcoming destination for travelers. The weather in Чарлстауне remains consistently pleasant, with only subtle shifts between seasons. The dry periods, particularly in January, February, March, and December, offer slightly cooler and less humid conditions, while the rest of the year brings warmer air and occasional rain.

Visitors to Чарлстаун will find that the sea stays warm throughout the year, ideal for swimming and water activities. The rainiest months, September and October, may bring short but intense showers, though they rarely disrupt plans for long. Even during these months, sunshine is frequent, and the lush landscapes of Чарлстауна thrive under the tropical sun.

Temperature

Temperatures in Чарлстауне hover between +24 °C and +31 °C across the year, with the warmest months falling between June and September. During this period, daytime highs can reach +31 °C, while nights remain balmy at around +26 °C. The cooler months, such as January and February, see slightly milder conditions, with averages around +26 °C and lows near +24 °C.

The sea temperature in Чарлстауне mirrors the air warmth, staying between +26 °C and +30 °C. The peak of the warm season, from July to October, offers the most inviting waters, perfect for snorkeling or simply cooling off. Even in the cooler months, the sea remains comfortable for swimming, rarely dipping below +27 °C.

Average air temperature °C
Average air temperature
Month Minimum Maximum
January 24.3 28.3
February 23.9 28.2
March 24.1 28.3
April 24.6 28.9
May 25.9 30
June 26.4 31.1
July 26.3 31.1
August 26.4 31.2
September 26.7 31.2
October 26.6 30.8
November 25.9 29.9
December 24.8 28.7

Precipitation

Rainfall in Чарлстауне is spread unevenly throughout the year, with a clear distinction between drier and wetter periods. The driest months, January, February, March, and December, see minimal rain, often just a few short showers. In contrast, September and October are the wettest, with rainfall reaching over 100 mm per month, though downpours are usually brief.

From May to November, Чарлстаун experiences more frequent rain, but it rarely lasts all day. The showers are often heavy but pass quickly, leaving behind fresh air and vibrant greenery. Travelers visiting during these months should pack light rain gear but can still expect plenty of sunshine between the showers.

Precipitation amount mm
Precipitation amount
Month Precipitation
January 31.3
February 72.1
March 39.2
April 55.6
May 52.9
June 54.9
July 70.1
August 81.9
September 109
October 117.2
November 85.1
December 30.3

What to pack

For a trip to Чарлстаун, lightweight and breathable clothing is essential year-round. During the warmer months, from June to September, pack light fabrics, swimwear, and sun protection, as temperatures can climb to +31 °C. A wide-brimmed hat and sunglasses will help shield you from the tropical sun, while a reusable water bottle keeps you hydrated.

If visiting Чарлстаун in the wetter months, such as September or October, a compact umbrella or a light rain jacket is useful for sudden showers. Waterproof footwear can also come in handy for exploring after rain. For evenings, a light cover-up or shawl may be needed, as breezes can feel cool after the heat of the day.

Average monthly wind m/s
Average monthly wind
Month Wind speed
January 6.7
February 7.3
March 6.6
April 6.1
May 6.1
June 6.8
July 7.5
August 6.2
September 5.1
October 5.3
November 5.6
December 6.3