Best months to visit
JanuaryFebruaryDecember
December through April is peak season — sunny, dry, lowest hurricane risk, sea warmest in the Caribbean. May offers similar weather with shoulder pricing. The June-November window has hurricane risk but most named storms miss; modern forecasting gives 5-7 days warning.
Best for
Beach
December to April (dry, sunny, sea 27°C, outside hurricane peak)
Hiking
January to March (cooler 25-26°C, low humidity, dry trails — Mastic Trail and Bluff lookouts on Cayman Brac)
Sightseeing
December to May — peak season aligns with the dry winter and lowest hurricane risk
Climate notes
- Tropical wet/dry climate (Köppen Aw): warm 26-29°C year-round with a clear wet season May-November and dry winter December-April
- Hurricane season June 1 to November 30, with peak risk August-October — the Cayman Islands sit in the western Caribbean and have been hit by several major hurricanes (Ivan 2004, Paloma 2008)
- Steady northeasterly trade winds blow most of the year, moderating heat and feeding world-class diving conditions on the leeward west coast
- Sea surface temperature among the warmest in the Caribbean — 27°C in winter, 31°C in late summer; visibility on dive sites typically 30-40 m year-round
- Brief cold fronts December-February occasionally drop air temperature to 20°C and stir surf for a few days, then conditions return to typical warmth
Temperature (min / max °C)
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Rainy days per month
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Sunshine hours per month
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Regional notes
- Grand Cayman (George Town and Seven Mile Beach): the climate baseline; the leeward (west) coast is sheltered for diving
- Cayman Brac and Little Cayman (sister islands): drier and slightly more exposed to wind; even more arid in the dry season
- All three islands share the same overall climate — there are no significant microregions, only exposure differences
Frequently asked questions
When is the best time to visit the Cayman Islands?
December through April for the driest, sunniest weather and lowest hurricane risk. Sea temperature stays at 27°C in winter — one of the warmest seas in the Caribbean. May offers similar weather with lower prices.
Is it safe to visit during hurricane season?
Hurricane season runs June 1 to November 30 with peak risk August-October. The Cayman Islands have been hit by major hurricanes historically (Ivan 2004, Paloma 2008) but most named storms miss. Modern forecasting gives 5-7 days warning. Travel insurance with hurricane coverage is essential.
Can you dive in the Cayman Islands year-round?
Yes. Sea temperature stays 27-31°C every month, and visibility is typically 30-40 m. Dive sites on the leeward (west) coast are sheltered from trade winds year-round. Hurricane season may briefly disrupt dive operations during named storms; otherwise diving is consistent.
Why is the diving so good in the Cayman Islands?
Three factors: clear water from minimal river runoff (the islands are flat and arid), the deep Cayman Trench just offshore that brings dramatic walls and big pelagic species, and protected leeward dive sites with consistently calm conditions year-round.
Does it rain in the Cayman Islands?
Yes, mostly May to November (90-150 mm/month). The wettest months are September and October when tropical disturbances bring heavy showers. December-April sees only 30-60 mm/month. Most summer rain falls as brief intense showers rather than all-day drizzle.
Is sea swimming comfortable year-round?
Yes. Sea temperature ranges from 27°C (February-March) to 31°C (August-September) — comfortable for everyone every month. The Caymans have among the warmest sea temperatures in the Caribbean.
Are the Cayman Islands cooler than Jamaica?
Marginally. Cayman is slightly drier overall thanks to its low, flat topography (no mountains to wring rain from clouds), and the trade winds are slightly fresher. Air temperature differences are minor; humidity is similar.
Climate data: Open-Meteo · 2020–2025