May weather forecast
Cayman Islands

May marks the beginning of the wet season in the Cayman Islands, with noticeable increases in both temperature and rainfall. Average temperatures during May range from 26°C (78.8°F) to 30°C (86°F), marking a continued warming trend from April. These warmer conditions serve as an introduction to the hot, humid conditions characteristic of the forthcoming summer months.

Rainfall in May shows a significant uptick compared to April, with an average of about 130mm (5.12"). This increase in rainfall is substantial, signalling the onset of the wet season, yet remains relatively moderate compared to the peak rainfall months such as August and September.

As in previous months, the climate in May is similar across the three islands: Grand Cayman, Cayman Brac, and Little Cayman. The capital city, George Town, located on Grand Cayman, mirrors the general climate trends of the country in May, with similar temperature ranges and an increase in rainfall.

Wind speeds in May continue to average around 20km/h (12.4mph), offering a respite from the rising temperatures and humidity. Daylight hours continue to extend, averaging about 13 hours per day as the islands move closer to the summer solstice.

Even with the onset of the wet season, May still provides ample opportunity for visitors to enjoy a variety of outdoor activities. The warmer temperatures are particularly suited to water activities such as swimming, snorkeling, and diving. Additionally, the beginning of the turtle nesting season in May presents a unique opportunity for wildlife enthusiasts to witness this incredible natural phenomenon. However, visitors are advised to prepare for the possibility of rainfall, especially in the latter part of the month.

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• George Town - May »
  In George Town in May, during 7 rainfall days, 150mm (5.91") of precipitation is typically accumulated. Temperatures continue to climb in May, with 29°C (84.2°F) marking the high point, which marks it as one of the warmest months in George Town.
• West Bay - May »
  Water temperature ranging from 25°C (77°F) to 29°C (84.2°F) is recognized as warm and pleasant by all, making water activities comfortable and delightful for long durations. May rings in the onset of peak summer in West Bay, a transition from the balmy April weather.
• East End - May »
  The months with the most sunshine in East End, Cayman Islands, are May and July, with an average of 10.6h of sunshine. In East End the average seawater temperature in May is 28.3°C (82.9°F).
• North Side - May »
  In North Side in May, the average water temperature is 28.3°C (82.9°F). In North Side, during May, the rain falls for 21.3 days and regularly aggregates up to 108mm (4.25") of precipitation.
• Old Man Bay - May »
  In Old Man Bay in May, during 21.3 rainfall days, 108mm (4.25") of precipitation is typically accumulated. The months with the most sunshine in Old Man Bay are May and July, with an average of 10.6h of sunshine.
• Half Way Pond - May »
  In Half Way Pond in May, it is raining for 21.3 days, with typically 108mm (4.25") of accumulated precipitation. The months with the highest UV index in Half Way Pond are February through December, with an average maximum UV index of 7.
• Gun Bay - May »
  The heat index, also known as 'real feel' or 'apparent temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. The average heat index, which takes the relative humidity and factors it into the air temperature reading, in May is estimated at 32°C (89.6°F).
• Brinkleys - May »
  On the last day of the month, in Brinkleys sunrise is at 05:46 and sunset at 18:59 EST. In Brinkleys during May, the rain falls for 21.3 days and regularly aggregates up to 108mm (4.25") of precipitation.
• Sand Bluff - May »
  In Sand Bluff during May, the rain falls for 21.3 days and regularly aggregates up to 108mm (4.25") of precipitation. In Sand Bluff during the entire year, the rain falls for 241.1 days and collects up to 854mm (33.62") of precipitation.
• Spot Bay - May »
  On the last day of the month, in Spot Bay sunrise is at 05:39 and sunset at 18:54 EST. In Spot Bay in May, it is raining for 21.3 days, with typically 108mm (4.25") of accumulated precipitation.
• Breakers - May »
  On the first day of May in Breakers sunrise is at 05:55 and sunset at 18:47. Breakers, Cayman Islands, experiences a transition to a still warm 28°C (82.4°F) in average high-temperatures with the arrival of May, not greatly differing from April's 27.1°C (80.8°F).