The warming trend recorded in the Cayman Islands is not an isolated phenomenon but part of a much broader global pattern, with local weather statistics closely reflecting the record-breaking temperatures being observed across much of the world.
Figures released by the Cayman Islands National Weather Service show that the recorded average maximum and minimum temperatures in May and June were above the Islands’ 30-year averages. The data follows an exceptionally warm 2025, when Cayman’s average temperature was approximately 0.8°C above the recent 10-year average.
Perhaps more significant was the increase in daytime heat in 2025. Maximum temperatures averaged 1.4°C above the 10-year average, while overnight minimum temperatures were 2.9°C higher, indicating that nights are no longer cooling as much as they once did. Reduced overnight cooling can increase heat stress, affect sleep, place greater demand on electricity for air conditioning and create additional health risks, particularly for older people and those with underlying medical conditions.
The hotter conditions have also coincided with unusually dry weather. Cayman recorded a rainfall deficit of 19.4 inches during 2025, continuing a trend toward hotter and, at times, drier conditions.
Those local observations closely match findings from the latest global climate reports.
Second-warmest June globally
According to the European Union’s Copernicus Climate Change Service, June 2026 was the second-warmest June ever recorded globally, with an average surface air temperature of 16.54°C (61.7°F), or 1.39°C above pre-industrial levels. Western Europe experienced its hottest June on record as an intense heatwave swept across the continent, contributing to heat-related deaths, drought, wildfires and record-breaking sea temperatures.
The world’s oceans also continued to absorb unprecedented amounts of heat. Copernicus reported that average sea surface temperatures outside the polar regions reached 20.86°C (69.55°F), the highest ever observed in June and marginally warmer than the previous record set in 2024.
“June 2026 underscored how profoundly the climate is changing,” said Samantha Burgess, strategic lead for climate at the European Centre for Medium-Range Weather Forecasts.
“Together, these records reflect a climate system continuing to accumulate heat. The result is increasingly intense heatwaves, a persistently warm ocean, and growing risks for people, ecosystems and infrastructure.”
The warming is not confined to Europe. The US National Oceanic and Atmospheric Administration (NOAA) also ranked June 2026 as the second-warmest June on record globally, noting that all 10 of the warmest Junes since records began in 1850 have occurred since 2015.
NOAA reported that global ocean temperatures reached a new June record while Arctic sea ice fell to its third-lowest June extent on record.
Meanwhile, large parts of the United States are experiencing another period of dangerous summer heat, with forecasters warning that a strengthening “heat dome” could push temperatures above 100°F (38°C) across parts of the Midwest and northern Plains in the coming days.
Scientists say the long-term trend is unmistakable.
NOAA’s National Centers for Environmental Information reports that Earth has warmed by approximately 1.2°C since the late 19th century, with the rate of warming since the early 1980s now more than three times faster than the long-term average. The agency attributes the warming primarily to increasing concentrations of greenhouse gases produced by human activities.
The World Meteorological Organization has also warned that even more records are likely. A report released in May found there is an 86% chance that one year between 2026 and 2030 will become the hottest ever recorded, and a 91% probability that at least one of those years will temporarily exceed 1.5°C above pre-industrial temperatures.
Forecasters also expect developing El Niño conditions later this year to add further warmth to global temperatures during 2027.
For small islands such as the Cayman Islands, rising temperatures extend beyond personal discomfort. Warmer seas provide additional energy for tropical weather systems, contribute to coral bleaching, increase evaporation and place added stress on freshwater resources, ecosystems and human health.
While day-to-day weather will always vary, the long-term picture emerging from both Cayman’s own observations and the world’s leading climate agencies points in the same direction: the planet is continuing to warm.
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