Island, Cayman Islands
Grand Cayman weather by month and the best time to visit
When to go to Grand Cayman
Dec–Apr is dry and sunny and busiest. May–Nov is hotter and wetter with hurricane risk Aug–Oct; Pirates Week is in November.
Grand Cayman weather by month
Average daily high, rainfall and conditions.
- Jan26°26 mm
- Feb26°15 mm
- Mar26°13 mm
- Apr27°14 mm
- May28°66 mm
- Jun29°94 mm
- Jul29°62 mm
- Aug30°81 mm
- Sep30°105 mm
- Oct29°154 mm
- Nov28°88 mm
- Dec27°39 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | 26°C79°F | 25°C77°F | 26 mm | 77% | Pleasant |
| February | 26°C79°F | 25°C77°F | 15 mm | 77% | Pleasant |
| March | 26°C80°F | 25°C78°F | 13 mm | 76% | Pleasant |
| April | 27°C81°F | 26°C79°F | 14 mm | 77% | Pleasant |
| May | 28°C83°F | 27°C81°F | 66 mm | 79% | Pleasant |
| June | 29°C84°F | 28°C82°F | 94 mm | 81% | Pleasant |
| July | 29°C85°F | 29°C83°F | 62 mm | 79% | Pleasant |
| August | 30°C85°F | 29°C84°F | 81 mm | 78% | Pleasant |
| September | 30°C85°F | 29°C84°F | 105 mm | 78% | Pleasant |
| October | 29°C84°F | 28°C83°F | 154 mm | 79% | Pleasant |
| November | 28°C82°F | 27°C81°F | 88 mm | 77% | Pleasant |
| December | 27°C81°F | 26°C79°F | 39 mm | 78% | Pleasant |
Quick answers
What is the best month to visit Grand Cayman?
Dec–Apr. Dec–Apr is dry and sunny and busiest. May–Nov is hotter and wetter with hurricane risk Aug–Oct; Pirates Week is in November.
When is the rainy season in Grand Cayman?
Rain peaks in October with about 154 mm. Months with 150 mm or more: Oct.
What is the hottest month in Grand Cayman?
August, with average highs of 30°C (85°F).
How cold does Grand Cayman get?
The coolest nights are in January, averaging 25°C (77°F).
More about Grand Cayman
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Sources
- NASA POWER climatology (2001–2020)
- Cayman Islands Department of Tourism
- Cayman Islands Airports Authority
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.