Great Guana Cay (Exuma) Weather by Month
Great Guana Cay in the Exumas enjoys a tropical monsoon climate with warm temperatures year-round. Highs range from 77°F in winter to 90°F in summer, with water temperatures between 76-86°F making swimming comfortable in every season. The dry season runs December through April with minimal rainfall (2-3 days per month), while the wet season from May through October brings increased precipitation (6-8 rainy days monthly). Trade winds blow predominantly from the east at 10-15 knots, with stronger northeast winds in winter and lighter southeast breezes in summer. Hurricane season spans June 1 through November 30, with peak risk in September. The protected waters west of the cay offer calmer sailing conditions, while the eastern Exuma Sound provides more challenging open-water sailing.
Best months to visit: December, January, February, March, April.
| Month | High / Low | Water | Wind | Rain days | Hurricane |
|---|---|---|---|---|---|
| January | 77° / 66°F | 77°F | 14 kn | 3 | none |
| February | 77° / 66°F | 77°F | 14 kn | 3 | none |
| March | 80° / 68°F | 77°F | 15 kn | 3 | none |
| April | 82° / 70°F | 79°F | 13 kn | 3 | none |
| May | 85° / 73°F | 81°F | 11 kn | 7 | low |
| June | 87° / 76°F | 83°F | 10 kn | 7 | low |
| July | 89° / 77°F | 85°F | 10 kn | 5 | moderate |
| August | 90° / 78°F | 86°F | 9 kn | 6 | high |
| September | 88° / 77°F | 86°F | 9 kn | 7 | high |
| October | 85° / 75°F | 84°F | 10 kn | 8 | moderate |
| November | 82° / 72°F | 81°F | 13 kn | 5 | low |
| December | 79° / 68°F | 79°F | 14 kn | 3 | none |