Weather in St. John's

Preparing for a trip to St. John's? In this section, you will find up-to-date information about the weather in the capital of Antigua and Barbuda. We provide current conditions, forecasts, and useful charts to help you plan your day.

St. John's, the capital of Antigua and Barbuda, boasts a delightful tropical climate that makes it an attractive destination year-round. The temperature here is surprisingly stable, with averages fluctuating within a comfortable range of 25°C to 28°C. This means you can expect warm, sunny weather at almost any time of the year, perfect for a beach holiday and exploring the island.

Instead of the classic four seasons, the climate in St. John's is generally divided into drier and slightly wetter periods, although the difference is not very significant. From December to June, the lowest amount of rainfall and rainy days is usually observed. From July to November, precipitation increases slightly, reaching a maximum in September (about 5 mm), and rainy days become more frequent. However, even during this period, rains are most often short-lived and do not interfere with enjoying your holiday, while the overall weather pattern remains very pleasant.

In St. John's, a surprisingly even and warm climate awaits you throughout the year. The average annual temperature fluctuates within a very narrow range, ensuring comfortable conditions for relaxation. The hottest months are usually August and September, when the average temperature reaches 27.7-27.8°C, and daytime highs confidently hold at the 28.8°C mark. The "coolest" month, if one can call it that for a tropical climate, is considered to be February, with an average temperature of about 25.0°C and minimum nighttime values dropping to 24.1°C.

The summer period, which in St. John's lasts approximately from June to October, is characterized by consistently hot and sunny weather. Daytime temperatures during this time fluctuate between 28.4°C - 28.8°C, and nights remain very warm, with temperatures around 26.3°C - 26.7°C. The so-called "winter" months, from December to March, bring a very mild and pleasant warmth. Average daytime temperatures during this period range from 26.0°C to 26.9°C, and nighttime temperatures rarely drop below 24.1°C - 25.1°C. Thus, even during the "coolest" months in St. John's, very comfortable warm weather persists, ideal for a beach holiday.

One of the remarkable features of the temperature regime in St. John's is the insignificant fluctuation in temperature between day and night. The difference between the daily maximum and minimum temperatures throughout the year is only about 1.7°C - 2.1°C. This means that evenings and nights here are almost as warm as the days, allowing you to enjoy walks and outdoor relaxation at any time of day without the need for extra warm clothing.

In St. John's, precipitation is distributed unevenly throughout the year, allowing for a distinction between wetter and drier periods, although it is worth noting that absolute rainfall values are low. Snow, characteristic of temperate latitudes, is completely absent here; all precipitation falls in the form of rain.

The wetter season in St. John's is usually observed from July to November. The maximum amount of rainfall occurs in September, when an average of about 5 mm falls. This same month, along with October, is distinguished by the highest number of rainy days – approximately 20 days. In July and August, an increase in rainfall to 3 mm and about 19 rainy days is also noted. Likely, rains during this period take the form of short-lived but occasionally intense tropical downpours, which are quickly replaced by sunny weather.

The dry season covers the months from January to May, as well as December. The least amount of rainfall – just 1 mm – is recorded in January, March, April, and May. February, June, and December bring about 2 mm of rainfall. Remarkably, even in the driest months, such as March and April, there are about 13 rainy days, and in January and February – up to 15 days. This indicates that rains during this period, although they may be frequent, are typically very light and brief, possibly in the form of a short drizzle or isolated refreshing drops.

When planning a trip to St. John's, remember that a warm tropical climate awaits you all year round. The foundation of your wardrobe should consist of light, breathable clothing made from natural fabrics such as cotton or linen: shorts, T-shirts, sundresses, and light trousers will be the ideal choice. Don't forget swimwear to enjoy the beautiful beaches of Antigua and Barbuda. Essential companions will be high SPF sunscreen, headwear (a hat or cap), and quality sunglasses for protection against the bright Caribbean sun. Comfortable footwear, such as sandals, flip-flops, and light sneakers for walking, is also extremely important.

Although the overall temperature in St. John's remains consistently high, it is worth considering that short-term rains are possible throughout the year – the number of "wet days" is quite significant, even if the total amount of precipitation is small. Therefore, a light folding umbrella or a compact raincoat may prove very useful, especially if you are planning a trip between July and November, when rainfall and rainy days increase slightly. Evenings in St. John's are also warm, however, a light wrap or a long-sleeved shirt might come in handy for protection against the evening cool by the shore or in air-conditioned rooms. The principle of layering here lies more in the ability to quickly adapt to the sun or light rain rather than keeping warm.