Mustique weather by month & the best time to visit
St. Vincent & Grenadines · beach resort · semi-arid climate
The best time to visit Mustique is February — its sunniest month (Sunshine Score 94/100), with March and April close behind. Mustique averages about 3,004 hours of sunshine a year. Daytime highs around 27°C / 81°F and roughly 15 mm of rain in February.
When is the best time to visit Mustique?
For sunshine, the best time to visit Mustique is February, then March and April. The dullest month is October (77/100, 107 mm of rain). The full month-by-month picture is in the table below.
How sunny is Mustique?
Mustique is one of the sunniest places on Earth: about 3,004 hours of sunshine a year. February (94/100) is noticeably better than October (77). It ranks #4 of 5 destinations in St. Vincent & Grenadines for annual sunshine, right at the national median of 3,004 hours. Rain has a clear season: the wettest stretch, around October, carries about 42% of the annual 681 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 92 | 27° / 81°F | 26° / 79°F | 27 mm | 9 | 28° / 82°F |
| February | 94 | 27° / 81°F | 26° / 79°F | 15 mm | 11 | 28° / 82°F |
| March | 93 | 27° / 81°F | 26° / 79°F | 20 mm | 12 | 28° / 82°F |
| April | 93 | 28° / 82°F | 26° / 79°F | 21 mm | 12 | 29° / 84°F |
| May | 89 | 28° / 82°F | 27° / 81°F | 41 mm | 11 | 29° / 84°F |
| June | 84 | 29° / 84°F | 27° / 81°F | 68 mm | 10 | 29° / 84°F |
| July | 83 | 29° / 84°F | 27° / 81°F | 74 mm | 10 | 29° / 84°F |
| August | 81 | 29° / 84°F | 28° / 82°F | 88 mm | 11 | 30° / 86°F |
| September | 81 | 29° / 84°F | 28° / 82°F | 88 mm | 11 | 31° / 88°F |
| October | 77 | 29° / 84°F | 28° / 82°F | 107 mm | 10 | 30° / 86°F |
| November | 80 | 29° / 84°F | 27° / 81°F | 89 mm | 9 | 30° / 86°F |
| December | 89 | 28° / 82°F | 27° / 81°F | 43 mm | 9 | 29° / 84°F |
Sea temperature in Mustique by month
The sea off Mustique is warmest in September at around 31°C / 88°F, and coolest in January at 28°C / 82°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.
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Mustique: questions and answers
What kind of destination is Mustique?
Mustique is a beach resort in St. Vincent & Grenadines with a semi-arid climate — the sea reaches 31°C at its warmest and is swimmable (21°C+) year-round.
How many hours of sunshine does Mustique get a year?
Mustique gets about 3,004 hours of sunshine a year, at its best around February.
When is the best time to visit Mustique?
The sunniest time to visit Mustique is February, when the Sunshine Score peaks at 94/100 (with March and April close behind). Expect daytime highs around 27°C / 81°F.
What is the least sunny month in Mustique?
October is the least sunny month in Mustique, scoring 77/100 with about 107 mm of rain.
What is the sea temperature in Mustique?
The sea in Mustique ranges from about 28°C (January) to 31°C (September). Month-by-month sea temperatures are on this page.
How strong is the sun in Mustique?
The typical midday UV index in Mustique peaks around 12 (extreme) in March, easing to about 9 (very high) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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