Treasure Cay weather by month & the best time to visit
Bahamas · beach resort · tropical — wet & dry seasons climate
The best time to visit Treasure Cay is January — its sunniest month (Sunshine Score 87/100), with February and December close behind. Treasure Cay averages about 2,663 hours of sunshine a year. Daytime highs around 23°C / 73°F and roughly 41 mm of rain in January.
When is the best time to visit Treasure Cay?
For sunshine, the best time to visit Treasure Cay is January, then February and December. The dullest month is September (67/100, 182 mm of rain). The full month-by-month picture is in the table below.
How sunny is Treasure Cay?
Treasure Cay gets a lot of sun: around 2,663 hours a year. January (87/100) is noticeably better than September (67). It ranks #21 of 21 destinations in Bahamas for annual sunshine, below the national median of 2,883 hours. Rain has a clear season: the wettest stretch, around August, carries about 41% of the annual 1,132 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 87 | 23° / 73°F | 21° / 70°F | 41 mm | 5 | 21° / 70°F |
| February | 87 | 23° / 73°F | 21° / 70°F | 43 mm | 6 | 21° / 70°F |
| March | 85 | 23° / 73°F | 22° / 72°F | 53 mm | 8 | 24° / 75°F |
| April | 82 | 25° / 77°F | 23° / 73°F | 68 mm | 9 | 24° / 75°F |
| May | 74 | 26° / 79°F | 25° / 77°F | 113 mm | 9 | 28° / 82°F |
| June | 68 | 28° / 82°F | 27° / 81°F | 146 mm | 9 | 29° / 84°F |
| July | 69 | 29° / 84°F | 28° / 82°F | 141 mm | 10 | 31° / 88°F |
| August | 68 | 30° / 86°F | 28° / 82°F | 144 mm | 9 | 31° / 88°F |
| September | 67 | 29° / 84°F | 28° / 82°F | 182 mm | 8 | 30° / 86°F |
| October | 76 | 27° / 81°F | 26° / 79°F | 104 mm | 7 | 28° / 82°F |
| November | 85 | 25° / 77°F | 24° / 75°F | 55 mm | 5 | 25° / 77°F |
| December | 87 | 24° / 75°F | 22° / 72°F | 42 mm | 4 | 22° / 72°F |
Sea temperature in Treasure Cay by month
The sea off Treasure Cay is warmest in July at around 31°C / 88°F, and coolest in January at 21°C / 70°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
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Treasure Cay: questions and answers
What kind of destination is Treasure Cay?
Treasure Cay is a beach resort in Bahamas with a tropical — wet & dry seasons climate — the sea reaches 31°C at its warmest and is swimmable (21°C+) year-round.
How many hours of sunshine does Treasure Cay get a year?
Treasure Cay gets about 2,663 hours of sunshine a year, at its best around January.
When is the best time to visit Treasure Cay?
The sunniest time to visit Treasure Cay is January, when the Sunshine Score peaks at 87/100 (with February and December close behind). Expect daytime highs around 23°C / 73°F.
What is the least sunny month in Treasure Cay?
September is the least sunny month in Treasure Cay, scoring 67/100 with about 182 mm of rain.
What is the sea temperature in Treasure Cay?
The sea in Treasure Cay ranges from about 21°C (January) to 31°C (July). Month-by-month sea temperatures are on this page.
How strong is the sun in Treasure Cay?
The typical midday UV index in Treasure Cay peaks around 10 (very high) in July, easing to about 4 (moderate) in December. Month-by-month midday UV values are in the UV column of the table on this page.
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