Last updated: August 21, 2025
January in Saint John's, Antigua and Barbuda offers a delightful tropical climate, with an average temperature hovering around 25°C (78°F). Visitors can expect maximum daytime temperatures reaching up to 27°C (80°F), providing perfect conditions for beach outings and outdoor activities. Nighttime temperatures cool down to a comfortable 23°C (73°F). While January witnesses 34 mm (1.4 in) of rainfall spread across 12 days, the humidity remains relatively high at 77%, creating a lush, vibrant environment. This month strikes an ideal balance between warmth and occasional refreshing showers, making it a captivating time to explore this Caribbean paradise.
In January, Saint John's, Antigua and Barbuda, welcomes visitors with delightful temperatures that effortlessly blend warmth and comfort. With a minimum temperature of 23°C (73°F), an average of 25°C (78°F), and a maximum reaching 27°C (80°F), this month marks the beginning of the island's inviting climate. As the year progresses into February and March, temperatures remain stable, with averages sticking to 25°C (77°F) and maximums hovering around 26°C (80°F), offering a soothing consistency. By April, the warmth gently climbs, nudging max temperatures up to 27°C (82°F), continuing a gradual increase into the summer months. As the heat settles in through July and August, highs reach 29°C (84°F), yet the overall trend reflects the island's tropical allure, promising sun-kissed days and balmy evenings year-round. Thus, January serves as an ideal gateway to experience the enchanting climate of Antigua and Barbuda.
In January, Saint John's, Antigua and Barbuda experiences a moderate precipitation of 34 mm (1.4 in), falling over 12 days. This sets a trend for the early part of the year, where precipitation levels remain relatively low, with February showing only a slight increase to 36 mm. As we progress into the spring months, rain becomes slightly more frequent, peaking in May and June with accumulations of 49 mm and 52 mm, respectively. However, the real shift occurs during the summer when the rains intensify significantly, especially in September, where 144 mm (5.7 in) of rainfall can be expected over 21 days. This illustrates a clear seasonal pattern, highlighting the transition from drier conditions at the start of the year to a wetter climatic phase by mid-summer, making January a relatively calm month in contrast to the island’s later downpours.
In January, Saint John's, Antigua and Barbuda experiences a humidity level of 77%, setting the tone for a typically moist tropical climate. As the months progress, February and March show minimal changes, maintaining a steady 76% humidity. However, a gradual upward trend begins in April, with levels rising to 78%, and peaking during the summer months of July and August, where the humidity reaches an average of 84% and 83%, respectively. Following the peak, conditions start to ease off slightly in September and October, settling around 80% and 79%. By the end of the year, November and December bring humidity back down to the 80s, showcasing the cyclical nature of the island's weather. Overall, the humidity in Saint John's remains relatively consistent, with a noticeable uptick during the warmer summer months, enveloping visitors in a lush and tropical atmosphere.
In January, Saint John's, Antigua and Barbuda experiences a UV Index of 9, categorized as very high, with a burn time of just 15 minutes. This sets the stage for the year, as the UV levels steadily rise in the following months. By February, the index jumps to 11, indicating an extreme exposure level, and remains at this intense level, escalating to a peak of 14 in July. Notably, the burn time decreases to a swift 10 minutes from February through October, emphasizing the need for sun protection during these months. As the year winds down in November and December, the UV Index drops back to 9, allowing for slightly longer protection times again. For a detailed overview of UV exposure throughout the year, explore more at Saint John's UV Index.
UV Risk Categories
January in Saint John's, Antigua and Barbuda, greets visitors with an inviting 262 hours of sunshine, setting a vibrant tone for the year ahead. As the months progress, this sunshine abundance gradually increases, peaking in July with 361 hours, offering nearly 12 hours of blissful daylight each day. The trend remains strong through May and August, where sunshine hours stay above 350, ensuring plenty of opportunities for outdoor exploration. However, as summer gives way to autumn, a subtle decline begins, with September recording 321 hours and October trailing closely at 318. Despite this slight dip, the warmth and brightness persist, making Saint John's a year-round paradise for sun seekers.
January in Saint John's, Antigua and Barbuda, offers a promising 58% chance of sunny weather, setting the stage for pleasant outdoor activities and exploration. As we move into February, this likelihood increases to 71%, making it the sunniest month of the early year. Following this peak, the chances slightly decline into March at 64%, before dipping to 43% in April. Notably, a trend emerges where the chances of sun experience a significant drop during the summer months, with June hitting the lowest at 26%. However, as the year progresses towards November and December, the likelihood of sunshine bounces back, with 68% and 67%, respectively. Overall, those visiting in January can expect a nice balance of sun and cloud, perfect for enjoying the beautiful Caribbean landscape.
In Saint John's, Antigua and Barbuda, January ushers in a delightful rhythm of 11 hours of daylight, setting the tone for a month bathed in sunny warmth. This consistent daylight continues through February, but as spring approaches in March and April, the sun generously extends its embrace to 12 hours. This trend of increasing daylight peaks in June and July, offering a robust 13 hours of sun-filled revelry, ideal for beach days and outdoor adventures. However, as summer gives way to autumn, the daylight gradually tapers back down to 11 hours by October, maintaining a gentle and predictable cadence throughout the year. This enchanting cycle not only highlights the region's tropical allure but also invites visitors to bask in the beauty of each season's unique offerings.
In January, Saint John's experiences a gentle breeze, with an average wind speed of 7.2 m/s (16 mph), making it a perfect time for outdoor activities. As the month transitions into February, the winds pick up to 9.2 m/s (21 mph), indicating a heightened energy in the atmosphere. However, by March, the briskness slightly tapers off to 7.5 m/s (17 mph), maintaining a comfortable vibe as spring approaches. The winds continue to dance around the 6 to 8 m/s range through the following months, with a notable dip in September where it drops to a calm 5.2 m/s (12 mph). This trend highlights a seasonal fluctuation, with January's breezes serving as a refreshing prelude to the more variable winds that characterize the rest of the year. By the close of the year, the winds typically resurge, emphasizing the dynamic nature of Antigua’s climate.
Weather in Saint John's varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Saint John's, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between January and February, both months offer warm temperatures with only slight differences. January sees a minimum temperature of 23°C (73°F) and an average high of 27°C (80°F), while February has a slightly lower maximum of 26°C (80°F) and a minimum of 22°C (72°F). Precipitation is nearly comparable, with January receiving 34 mm (1.4 in) over approximately 12 days, whereas February brings a bit more rain at 36 mm (1.4 in) across 14 days. Humidity levels are also quite similar, with January at 77% and February just slightly lower at 76%. For a more detailed look at February weather specifically, you can check Saint John's weather in February.
In January, temperatures in Saint John range from a minimum of 23°C (73°F) to a maximum of 27°C (80°F), with an average temperature of 25°C (78°F). The month sees about 34 mm (1.4 in) of precipitation over 12 days, coupled with a humidity level of 77%. In comparison, March maintains similar temperatures, with a minimum of 23°C (73°F) and a maximum of 26°C (80°F), averaging around 25°C (77°F). Precipitation in March is slightly lower at 31 mm (1.2 in) across 11 days, and humidity drops slightly to 76%. For more detailed information, check out Saint John's weather in March.
In comparing the weather of January and April, we see some notable similarities and slight variations. Both months experience a minimum temperature of around 23°C (73°F) and an average of 25°C (78°F), making the overall warmth consistent throughout. However, April tends to have slightly higher maximum temperatures, reaching up to 27°C (82°F), compared to January's maximum of 27°C (80°F).
Precipitation also increases in April, with 38 mm (1.5 in) falling over 14 days, while January sees less rainfall at 34 mm (1.4 in) over 12 days. Additionally, the humidity rises marginally from 77% in January to 78% in April. For a more detailed look at April's climate, you can refer to the following link: Saint John's weather in April.
In January, the weather in Saint John's typically features mild temperatures, with a minimum of 23°C (73°F) and an average of 25°C (78°F), peaking at 27°C (80°F). The month experiences approximately 34 mm (1.4 in) of precipitation spread over 12 days, alongside a humidity level of 77%. Conversely, May sees slightly warmer weather, with minimum temperatures at 24°C (75°F) and an average of 26°C (79°F), reaching a maximum of 28°C (82°F). Rainfall increases to about 49 mm (1.9 in) over 15 days, with humidity rising to 79%. Overall, while both months are characterized by warm temperatures and humidity, May tends to be a bit warmer and wetter than January. For more detailed information, you can check Saint John's weather in May.
In January, Saint John experiences warm temperatures with a minimum of 23°C (73°F), an average of 25°C (78°F), and a maximum of 27°C (80°F). The month sees about 34 mm (1.4 in) of precipitation over 12 days, accompanied by a humidity level of 77%. In contrast, June brings slightly higher temperatures, with a minimum of 24°C (76°F), an average of 27°C (80°F), and a maximum of 28°C (83°F). Rainfall increases to 52 mm (2.0 in) across 14 days, and humidity rises to 81%, creating a more humid atmosphere. For more details on June weather, visit Saint John's weather in June.
In January, temperatures in Saint John average around 25°C (78°F), with a comfortable range of 23°C (73°F) to 27°C (80°F). The month sees relatively low precipitation, totaling 34 mm (1.4 inches) over about 12 days, and humidity levels are around 77%. In contrast, July experiences slightly warmer temperatures with an average of 27°C (81°F), ranging from 25°C (78°F) to a high of 29°C (84°F). However, July is also wetter, receiving 81 mm (3.2 inches) of rain over approximately 19 days and higher humidity at 84%. For more detailed information, check out Saint John's weather in July.
In January, the weather is generally mild, with temperatures ranging from a minimum of 23°C (73°F) to a maximum of 27°C (80°F) and an average temperature of 25°C (78°F). The month experiences 34 mm (1.4 in) of precipitation over 12 days, with a humidity level of around 77%. In contrast, August brings warmer temperatures, with a minimum of 25°C (78°F) and a maximum of 29°C (84°F), averaging 27°C (82°F). Precipitation increases significantly to 97 mm (3.8 in) over 18 days, and humidity rises to 83%. For a detailed look at the August weather, you can check Saint John's weather in August.
January and September exhibit notable differences in weather patterns. In January, temperatures are slightly cooler, with a minimum of 23°C (73°F) and an average of 25°C (78°F), while September's temperatures rise, featuring a minimum of 25°C (77°F) and an average of 28°C (82°F). Additionally, September experiences significantly higher precipitation at 144 mm (5.7 in) over 21 days compared to January's 34 mm (1.4 in) across 12 days, resulting in a wetter atmosphere. Humidity levels remain similar, with January at 77% and September slightly higher at 80%. For more detailed insights, check out Saint John's weather in September.
In comparing the weather of January and October, January offers slightly cooler temperatures, with minimums around 23°C (73°F) and an average of 25°C (78°F), while in October, temperatures begin at a minimum of 25°C (77°F), averaging 27°C (81°F) and reaching up to 29°C (85°F). While January experiences moderate precipitation of 34 mm (1.4 in) over approximately 12 days, October sees significantly higher rainfall, totaling 109 mm (4.3 in) across about 18 days. Humidity remains relatively consistent, with January at 77% and October slightly higher at 79%. For a detailed look at October weather, visit Saint John's weather in October.
In January, the weather is generally warm with temperatures ranging from a low of 23°C (73°F) to a high of 27°C (80°F), accompanied by an average humidity of 77%. The month sees moderate rainfall, with a total of 34 mm (1.4 in) and about 12 days of precipitation.
In contrast, November experiences slightly warmer temperatures, starting at a minimum of 24°C (76°F) and peaking at 28°C (83°F), with an average of 27°C (80°F). However, it is also wetter, receiving 94 mm (3.7 in) of rainfall over approximately 17 days, coupled with a slightly higher humidity level of 80%. For more detailed information, you can check Saint John's weather in November.
When comparing the weather in January to that in December, January tends to be slightly cooler with average temperatures ranging from a minimum of 23°C (73°F) to a maximum of 27°C (80°F). In contrast, December experiences slightly warmer conditions, with temperatures ranging from a minimum of 24°C (75°F) to a maximum of 28°C (82°F). Additionally, December sees more rainfall, with a total precipitation of 52 mm (2.1 in) over 18 days, compared to January's 34 mm (1.4 in) over just 12 days. Both months have high humidity levels, but January’s average humidity remains at 77%, while December is marginally higher at 78%. For more detailed insights, you can check Saint John's weather in December.
In January, Saint John's weather offers a delightful respite from the heat of the preceding months, featuring pleasantly warm temperatures that encourage outdoor activities. With an average temperature around 25°C (78°F) and relatively high humidity at 77%, the warmth feels comfortable. While the month sees an increase in rainfall—averaging approximately 34 mm (1.4 in) over 12 days—these showers typically provide a refreshing break rather than hindrance to your plans. This combination of warmth and moisture sets January apart from the dryer and hotter months ahead, making it an ideal time for visitors to explore the vibrant culture and stunning landscapes of Saint John. For a deeper dive into what to expect throughout the year, check out Saint John's Climate.