Temperature
Warm by day, warm at night.
83°Ftypical December high
Typical range
December climate
December in St. Lucia
Saint Lucia · Caribbean
Warm days and some sun. Humid air is the main drawback.
Good overall
Late
Daytime high
83°F
Lows around 76°F
Rain
Rainy spells
Sun
10.5 h/day
Air feel
Humid
Sea temp
82°F
Great for swimming
When to visit
Month-by-month fit
Best
Precipitation
Rain is frequent, but usually comes in brief, on-and-off spells. About 14 wet days this month.
45%wet-day frequency
AmountWet-day chance
Sunshine
Plenty of sun this month.
10.7 hDecember sunshine
Heat & humidity by month
Warm days, with humid periods.
98%December Heat feel
Easy airWarm airHumid airVery humid air
Hourly temperature pattern
In December, afternoons feel about 82° and nights feel near 78°.
ComfortableWarmHotNight hours
Clear sky
Partly cloudy skies this month.
58%December Clear sky
Clear skyCloud
Wind pattern
December's typical breeze keeps the air from feeling as stagnant.
13 mphDecember Breezy
Sea temperature
82°FDecember sea temp
More detailIncludes daypart comfort
Typical December day
December late afternoons are around 81°F, easing to about 79°F in early evening.
Avg temp Typical range
Morning81°F
Rain32%
Cloud41%
Humid airVery high
Sun intensityModerate
Midday83°F
Rain39%
Cloud47%
Humid airVery high
Sun intensityStrong
Late afternoon81°F
Rain32%
Cloud46%
Humid airVery high
Sun intensityModerate
Early evening79°F
Rain13%
Cloud38%
Humid airVery high
Sun intensityMinimal
Best windowData tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 82 | 75 | 1.4 | 13 | 10.8 | 74 | 81 |
| Feb | 82 | 75 | 0.9 | 10 | 11.1 | 71 | 80 |
| Mar | 83 | 75 | 1.1 | 11 | 11.6 | 71 | 80 |
| Apr | 84 | 76 | 1.5 | 12 | 11.8 | 73 | 81 |
| May | 85 | 78 | 1.7 | 13 | 11.7 | 74 | 82 |
| Jun | 85 | 78 | 2.8 | 16 | 11.5 | 76 | 83 |
| Jul | 85 | 78 | 3.6 | 21 | 11.6 | 78 | 83 |
| Aug | 85 | 78 | 4.1 | 22 | 11.4 | 79 | 84 |
| Sep | 86 | 78 | 4.0 | 19 | 11.1 | 78 | 85 |
| Oct | 85 | 78 | 4.9 | 21 | 10.7 | 79 | 85 |
| Nov | 84 | 77 | 4.0 | 19 | 10.6 | 79 | 84 |
| Dec | 83 | 76 | 1.7 | 14 | 10.7 | 75 | 82 |
Similar climates
Similar
Similar travel styleDominicaDominicaSimilar travel styleSt. JohnUS Virgin IslandsSimilar travel styleBaliIndonesiaSimilar travel styleRaa AtollMaldives
Want a side-by-side climate view? Compare St. Lucia with Dominica.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology