The climate of Saint John's
Saint John's, the capital city of
Antigua and Barbuda, is nestled in the warmth of the Eastern Caribbean Sea. The climatic conditions of this island city are primarily dictated by the Köppen climate grouping - Af, also known as a Tropical Rainforest Climate. Geographically, Saint John's is positioned advantageously to enjoy a balmy, warm atmosphere almost all year round backed by plentiful rainfall throughout the year.
Analyzing the climate data, it is evident that the temperature and rainfall are relatively steady. The monthly average high temperature ranges from 28.3°C (82.9°F) to a peak of 31.2°C (88.2°F), depicting warmth and humidity. Low temperatures too oscillate in a narrow range between 22.2°C (72°F) to 25.5°C (77.9°F), ensuring mildly warm nights. Rainfall patterns are consistent throughout the year with monthly averages between 45mm (1.77") to 142mm (5.59"). With evenly distributed rainfall, the city does not experience any dry season, a characteristic signature of the Tropical Rainforest climate.
Fluctuations in daylight hours can also be observed, with a climb from 11.2 hours in
January to a maximum of 13.1 hours by
June, before a decline back to 11.1 hours in
December. A distinctive highlight of Saint John's climate is the absence of any extreme weather changes. Instead, it carries the gift of a uniform, tropical climate, featuring warm temperatures, high humidity, and significant rainfall throughout the year.
The best time to visit Saint John's
While
Saint John's presents a welcoming climate year-round, certain months offer a more pleasing setting for visitors and tourists.
February and
March surface as favourable periods carrying the least amount of rainfall, averaging 45mm (1.77") and 46mm (1.81") respectively. Accompanied by an average high temperature that gracefully hovers around the 28°C (82.4°F) mark, these months deliver prime conditions for engaging outdoor and water activities while soaking in the tropical sunshine.
The worst time to visit Saint John's
Though
Saint John's maintains a reasonably stable climate through the year, the months between
September and
November witness a considerable surge in the rainfall, with averages exceeding 130mm (5.12"). Coupled with high temperatures peaking around 30°C (86°F), humidity levels during these months can make sightseeing and outdoor activities challenging. Tourists seeking to avoid the wettest months should consider planning their visit outside this period.
Spring weather in Saint John's
Spring in
Saint John's unfolds from
March to
May. Temperatures progressively rise from 28.8°C (83.8°F) to 30.2°C (86.4°F) whereas nights become warmer, moving from 22.7°C (72.9°F) to 24.5°C (76.1°F). Rainfall charts a rising trend as well, growing from 46mm (1.81") in March to 90mm (3.54") in May. This period combines warmth with mild rainfall, conferring an enjoyable ambiance to indulge in outdoor activities.
Summer weather in Saint John's
June introduces Summer season in
Saint John's and runs till
August. Daytime temperatures continue to rise, peaking at 31.2°C (88.2°F) in August, while nights also remain warm around 25°C (77°F) mark. Rainfall averages also increase, peaking at 99mm (3.9") in August. Despite the onset of heavier showers, the months retain long daylight hours, providing ample sunshine for beach activities and sightseeing.
Autumn weather in Saint John's
Autumn, occurring from
September to
November, sees the heaviest rainfall with monthly averages going beyond 130mm (5.12"). Daytime temperatures exhibit a slight drop from 31.1°C (88°F) to 29.8°C (85.6°F), and nights also cool off to a range from 25°C (77°F) to 23.9°C (75°F). Despite the downpour, the ambiance remains warm and humid.
Winter weather in Saint John's
December marks Winter in
Saint John's, with temperatures moderating to an agreeable range of 28.3°C (82.9°F) to 28.8°C (83.8°F), and nights growing slightly cooler hovering around 23°C (73.4°F). Rainfall reduces considerably to an average of 83mm (3.27") in December. Although the daylight hours are at their shortest at 11.1 hours, the winter months promise warmth, moderate rainfall and ample of sunlit hours for various outdoor activities.
Weather in January
Initiating the year in
Saint John's,
Antigua and Barbuda with
January shows a myriad of climatic alterations. Daylight hours slightly begin to increase, marking the end of the shortest days of the year. Moreover, the climate transitions from a wet to a slightly drier season.
Weather in January »Weather in February
February in
Saint John's signifies an ongoing trend of increasing temperatures along with longer daylight hours. The rain precipitation slightly reduces when compared with
January's weather, leading to a drier month. Furthermore, February marks the beginning of a trend with decreasing rainfall days, which extends into the following month.
Weather in February » Weather in March
The weather in
March further signifies the arrival of warmer and longer days in
Saint John's, with temperature highs reaching 28.8°C (83.8°F) on average. The trend of diminishing rainfall continues, leading to the beginnings of a drier month when compared to
February.
Weather in March »
Weather in April
April in
Saint John's brings average high temperatures of 29.4°C (84.9°F), showcasing notably warmer days than the preceding months. There is an increase in rainfall compared to
March, marking a wetter season. There's also a small rise in the volume of rainfall days, opposing the decreasing trend from the preceding months.
Weather in April » Weather in May
May in
Saint John's presents even warmer temperatures and longer daylight hours than its preceding month. Yet, it displays an opposing trend in humidity levels from the mass rainfall. The volume of rain escalated drastically to 90mm (3.54"), revealing an increase from the past month.
Weather in May » Weather in June
June, in
Saint John's, signals the arrival of the warmest period of the year with daylight hours peaking. Although the amount of rainfall decreases from the month of
May, it remains significantly high, following the ongoing wet conditions.
Weather in June »
Weather in July
Despite the weather conditions being typically warm in
July in
Saint John's, the average maximum temperature sees a slight increase from
June. Uniquely, July bears the peak of the rainy season, with a staggering rise in rainfall to 87mm (3.43").
Weather in July »Weather in August
August marks the continuation of the sweltering season in
Saint John's with remarkable high temperatures. The highest temperature in the year, averaging 31.2°C (88.2°F), is recorded in August, accentuating its status as the hottest month.
Weather in August » Weather in September
In
September, while temperatures in
Saint John's start to slightly decrease, they remain high, indicating the continuation of warm conditions. Noticeably, this month accounts for the heaviest rainfall of the year, totaling 132mm (5.2").
Weather in September »
Weather in October
October signifies cooler weather in
Saint John's with noticeable decreases in both daily high and low temperatures. However, the climate remains characterized by high volumes of rain, although these amounts see a subtle decrease from the previous month.
Weather in October » Weather in November
November in
Saint John's records cooler days and nights than the previous months. Simultaneously, the decrease in temperatures is accompanied by a tailor off in rainfall. Despite this decrease, the city records a significant amount of rain, amounting to an average of 135mm (5.31").
Weather in November » Weather in December
December in
Saint John's brings the mildest weather conditions of the year, as both the high and low temperatures decrease from
November. A noticeable decline in rainfall to 83mm (3.27") signifies the end of the rainy season. Correspondingly, there is a decrease in the number of rainy days, implying drier conditions towards the end of the year.
Weather in December » [Resources]