Cayman Islands climate by month
8-year averages · when to visit| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grand Cayman | 81° | 82° | 82° | 84° | 86° | 86° | 88° | 88° | 88° | 86° | 84° | 82° |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grand Cayman | 14 | 16 | 19 | 17 | 21 | 21 | 20 | 18 | 22 | 22 | 18 | 16 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grand Cayman | 82° | 81° | 82° | 82° | 84° | 85° | 86° | 87° | 88° | 86° | 84° | 83° |
Figures are averaged over 8 years of ERA5 reanalysis; sea temps come from ocean reanalysis, and UV is derived from solar elevation.
Grand Cayman climate in September
8-year averages · when to visitBest months: January–December · September: Good
| August | September | October | |
|---|---|---|---|
| Average temperature | → 84°F | 84°F | ▼ 82°F |
| Typical high | → 88°F | 88°F | ▼ 86°F |
| Typical low | → 81°F | 81°F | ▼ 79°F |
| Water temperature | ▲ 87°F | 88°F | ▼ 86°F |
| Precipitation | ▲ 4.1 in | 4.6 in | ▲ 5.1 in |
| Wet days | ▲ 18 d | 22 d | → 22 d |
| Sunshine per day | ▼ 11.5 h | 10.9 h | ▼ 10.2 h |
| Cloud cover | ▲ 10% | 11% | ▲ 12% |
| Midday UV | ▼ 12 | 11 | ▼ 9 |
| Daylight | 12:46 | 12:14 | 11:42 |
| Our take | Good | Good | Good |
September temperatures day by day daily mean + smoothed trend · °F
September precipitation day by day in
September UV day by day clear-sky midday value
Figures are averaged over 8 years of ERA5 reanalysis; sea temps come from ocean reanalysis, and UV is derived from solar elevation.
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Updated: 8:53 PM
Cayman Islands · 6 weather points · Climate reference: Grand Cayman (19.29°N, 81.37°W) · America/Cayman