Temperature
Hot by day, warm at night.
86°Ftypical Aug high
Grand Cayman
Cayman Islands · Caribbean
Grand Cayman is most comfortable in the drier months around December to April. Typical daytime highs run about 79-86°F year-round. The climate is warm and humid. The wetter months are roughly May to November.
Best time to go
12 mo · Typical year
Temperature range
76°F to 86°F
Rain
8 days/mo
Sunshine
11.1 h/day
Humidity feel
Humid year-round
When to visit
Month-by-month fit
Precipitation
Moderate rain risk across the month.
32%wet-day frequency
AmountWet-day chance
Sunshine
Plenty of sun this month.
11.8 hAug sunshine
Heat & humidity by month
Warm days, with some hot afternoons and occasional humid spells.
Very humidAug heat feel
Air-feel chart data is unavailable for this destination. Use the selected-month dew point, temperature, rain, and sunshine context together rather than treating any one metric as total comfort.
Sea temperature
85°Aug sea temp
More detailIncludes sky and daypart comfort
Cloud cover
Partly cloudy across the month.
46%Aug clear sky
ClearCloud cover
Similar
Similar things to doGrand TurkTurks and Caicos IslandsSimilar things to doBiminiBahamasSimilar things to doCozumelMexicoSimilar things to doWhitsundaysAustralia
Want a side-by-side climate view? Compare Grand Cayman with Grand Turk.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology