Last updated: January 18, 2025
The climate of George Town, Cayman Islands, is classified under the Köppen-Geiger system as Aw, indicating a tropical savanna climate characterized by distinct wet and dry seasons. Throughout the year, temperatures exhibit a moderate range, with a minimum of 21°C (70°F) recorded in January and an average temperature of 27°C (81°F). The warmest month, August, sees temperatures peaking at a maximum of 30°C (87°F), reflecting the region's overall warm climate. These climatic conditions not only contribute to the lush biodiversity of the islands but also influence local weather patterns and tourism.
In George Town, Cayman Islands, temperature patterns exhibit a warm tropical climate with minor fluctuations throughout the year. The cooler months of January and February feature minimum temperatures around 21°C (70°F), gradually increasing as spring approaches. March marks a slight rise in nighttime temperatures, reaching 23°C (74°F) by April, and by May, the average temperature consistently hovers around 27°C (81°F). As summer takes hold, temperatures peak in August and September, with average daily highs of 29°C (84°F) and maximums soaring to 30°C (87°F). Notably, the transition into autumn sees a gradual cooling, yet temperatures remain pleasantly warm, ranging between 24°C (76°F) and 26°C (80°F) in November and December. This stability in warmth, combined with a stronger heat during the summer months, defines the climatic character of this vibrant Caribbean locale.
George Town experiences a mild climate, with January temperatures hovering around a minimum of 21°C (70°F) and reaching a maximum of 30°C (87°F) in August. For more detailed information on monthly temperatures in George Town, you can visit the link provided: monthly temperatures in George Town.
The precipitation patterns in George Town, Cayman Islands, reveal a clear distinction between the drier and wetter months. From January to April, rainfall is relatively minimal, with January receiving 41 mm (1.6 in) and gradually declining to 19 mm (0.8 in) in March. February stands out as the driest month, bringing only 25 mm (1.0 in) of rain. As spring transitions to summer, there is a marked increase in rainfall, with May experiencing a significant spike to 130 mm (5.1 in), indicative of the onset of the rainy season. This trend continues into June and July, with precipitation levels of 96 mm (3.8 in) and 58 mm (2.3 in), respectively.
The peak of rainfall occurs in the latter half of the year, particularly in October, which sees an impressive 249 mm (9.8 in) over approximately 22 days, making it the wettest month. This is closely followed by November, which records 174 mm (6.8 in). Meanwhile, August and September maintain high rainfall levels at 105 mm (4.1 in) and 104 mm (4.1 in), respectively. Throughout the year, the average number of rainy days varies, peaking in October with 22 days, while drier months like March and February feature only 6 to 9 days of rain. This seasonal variability significantly impacts the region's lush vegetation and aquatic ecosystems.
In George Town, Cayman Islands, sunshine duration exhibits a notable seasonal trend, with hours of sunlight steadily increasing from winter into summer. Starting with 246 hours of sunshine in January, the region experiences a gradual uplift throughout the early months, reaching 299 hours in February and peaking at 338 hours in March. This upward trajectory continues, culminating in April with an impressive 342 hours—the beginning of a bright and sun-soaked phase that sets the tone for the upcoming warmer months.
The summer months truly shine, with July emerging as the highlight, recording 349 hours of glorious sunshine. Even though August and September maintain substantial sunshine totals at 335 hours and 322 hours, a subtle decrease marks the transition toward autumn. Notably, the latter part of the year sees a gradual decline, with hours dropping to 295 hours in October and 289 hours in November, before rebounding to 302 hours in December. This seasonal pattern underscores George Town's appeal as a warm, sunlit destination, particularly during the summer months when daylight hours are at their peak.
The UV Index in George Town, Cayman Islands, serves as a critical indicator of sun exposure risk throughout the year, highlighting significant variations between different months. The year begins with a UV Index of 9 in January, categorized as very high, which already necessitates caution for sun exposure with a recommended burn time of just 15 minutes. As the months progress into February, the UV Index surges to 11, entering the extreme category for the first time and reducing the burn time to 10 minutes. This pattern of increasing UV intensity is consistent, peaking in April and May at 13, emphasizing the necessity for protective measures during the brightest months of the year.
During the summer months, the UV Index remains exceptionally high, ranging from 12 to 13 across June, July, and August, reinforcing the importance of sun safety as the sun's rays are at their most potent. As the year transitions into autumn, October sees a slight drop to 11, followed by a further decline to 9 in November and 8 in December, both classified as very high but with longer burn times of 15 minutes. This seasonal fluctuation underscores the need for vigilance against UV radiation, particularly in the peak months, while also providing a reminder that sun protection remains important even during cooler months in this tropical paradise.
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In George Town, Cayman Islands, daylight duration reflects a consistent tropical pattern with slight variations throughout the year. During the winter months of January and February, residents and visitors can expect about 11 hours of daylight each day, providing ample light for various activities and exploration. As spring approaches in March and April, the daylight extends to 12 hours, allowing for longer afternoons and vibrant sunsets, which coincide with the island's bustling tourism season.
As summer arrives in May, daylight reaches its peak at 13 hours, sustaining this duration throughout June and July. This abundance of sunlight supports outdoor leisure, beautiful beaches, and vibrant nightlife. In August and September, daylight slightly decreases to 12 hours, maintaining a comfortable balance for both day and night activities. As the year draws to a close, daylight gradually diminishes to 11 hours in October and November, finally tapering to 10 hours in December, signaling the arrival of winter. Despite these changes, the overall daylight experience in George Town remains pleasantly consistent, characteristic of its tropical climate.
George Town, Cayman Islands, enjoys a tropical climate characterized by warm temperatures and varying precipitation throughout the year. The average monthly temperatures range from 26°C (78°F) in January to 29°C (84°F) in August, with peaks reaching up to 30°C (86°F) in July and October. Rainfall is most pronounced in October, accumulating 249 mm (9.8 in), while the month of February typically sees the least precipitation at 25 mm (1.0 in). Sunshine is abundant, particularly in the summer months, with July experiencing around 349 hours of sunlight. For more details, visit George Town climate.
In summary, George Town, Cayman Islands, offers a distinctive tropical climate characterized by warm temperatures, varied precipitation patterns, abundant sunshine, high UV Index levels, and consistent daylight duration throughout the year. The region's Aw climate classification reveals a clear seasonal rhythm, with peaks in temperature and rainfall that align with the distinct wet and dry seasons. Coupled with extended hours of sunlight and an extreme UV Index in the summer months, this paradise not only attracts tourists but also necessitates careful consideration for sun protection. Ultimately, George Town's climatic and environmental features create a captivating tropical destination that enhances the vibrant lifestyle and rich biodiversity of the islands.