Climate in Saint John’s, Antigua and Barbuda

North America

Saint John’s, the capital city of Antigua and Barbuda, is situated on the island of Antigua in the eastern Caribbean. This picturesque city is known for its stunning beaches, crystal-clear waters, and vibrant culture. The climate in Saint John’s is characterized as tropical maritime, with warm temperatures year-round and distinct wet and dry seasons. To provide a comprehensive description of the climate in Saint John’s, it is important to examine various aspects, including temperature, precipitation, humidity, and seasonal variations.

Geographical Location and Altitude:

According to andyeducation, Saint John’s is located on the northwestern coast of Antigua, one of the main islands of the twin-island nation of Antigua and Barbuda. It is situated at sea level along the shores of the Caribbean Sea. The city’s latitude is approximately 17.12 degrees north of the equator.

Seasonal Overview:

Saint John’s experiences two primary seasons: a wet season and a dry season. These seasons are typical of tropical maritime climates in the Caribbean.

Wet Season (June to November):

The wet season in Saint John’s typically begins in June and extends through November. During this period, the city experiences warm and humid conditions, with the possibility of tropical storms and hurricanes. The prevailing wind direction during the wet season is generally from the southeast.

Dry Season (December to May):

The dry season in Saint John’s usually begins in December and extends through May. This season is characterized by drier and less humid conditions, with cooler temperatures compared to the wet season. The dominant wind direction shifts during the dry season, with winds originating from the northeast, carrying dry air from the Atlantic Ocean.


According to existingcountries, Saint John’s enjoys warm temperatures year-round due to its tropical location. However, there are noticeable temperature variations between the wet and dry seasons.

During the wet season (June to November), Saint John’s experiences warmer temperatures, with average high temperatures ranging from 29°C to 31°C (84°F to 88°F). Nights are milder, with lows generally between 23°C and 25°C (73°F to 77°F). The city’s proximity to the warm waters of the Caribbean Sea contributes to the consistent warmth during this season.

In contrast, the dry season (December to May) brings slightly cooler temperatures, with average high temperatures ranging from 27°C to 29°C (81°F to 84°F). Nights can be cooler, with lows ranging from 20°C to 23°C (68°F to 73°F). These cooler temperatures are due to the influence of the dry air mass from the Atlantic Ocean during this period.


Precipitation patterns in Saint John’s are strongly influenced by the wet and dry seasons. The city experiences a distinct rainfall pattern throughout the year.

During the wet season (June to November), Saint John’s receives the majority of its annual rainfall. Rainfall is heavy and regular, with average monthly precipitation ranging from 100 millimeters (3.9 inches) to 200 millimeters (7.9 inches) or more. The wettest months are typically September and October, when tropical storms and hurricanes are more likely to affect the region. These months can bring torrential downpours and the potential for flooding.

Conversely, the dry season (December to May) is characterized by minimal precipitation. Rainfall during this period is scarce, with some months receiving only trace amounts of rain. The driest months are usually February, March, and April. The dry season contributes to a noticeable decrease in vegetation, and the landscape becomes drier.

Humidity and Wind:

Saint John’s experiences high humidity levels, especially during the wet season when warm and moist air from the Caribbean Sea prevails. Humidity levels often exceed 80% during this period, contributing to the muggy and sticky feeling in the city.

In contrast, the dry season brings lower humidity levels, with values often dropping below 70%. The shift in wind direction during the dry season, bringing dry air from the Atlantic Ocean, contributes to the reduced humidity.

Winds in Saint John’s vary throughout the year due to the changing seasons and prevailing weather patterns. During the wet season, the prevailing winds come from the southeast, while the dry season brings winds from the northeast, carrying drier air from the Atlantic Ocean.

Climate Variability and Extreme Weather Events:

Saint John’s is susceptible to extreme weather events, particularly during the wet season. The city can be affected by tropical storms and hurricanes, which can bring strong winds, heavy rainfall, and the risk of storm surges. These weather events can lead to flooding, damage to infrastructure, and disruptions to daily life.

The hurricane season in the Caribbean typically runs from June to November, with the highest risk of hurricanes occurring in August and September. Residents of Saint John’s and the wider region are advised to prepare and take necessary precautions during this period.


In summary, Saint John’s, Antigua and Barbuda, experiences a tropical maritime climate with distinct wet and dry seasons. The wet season, from June to November, brings warm and humid conditions with heavy rainfall, along with the potential for tropical storms and hurricanes. In contrast, the dry season, from December to May, features drier and less humid conditions, with cooler temperatures. Saint John’s is known for its warm and inviting climate, making it a popular destination for tourists seeking sun, sea, and vibrant Caribbean culture. However, residents and visitors alike must remain vigilant during the hurricane season and be prepared for extreme weather events.