Hot in Jan
30°C average high
avg high · 21° at night
25°C+ on almost every day
Caribbean
St Lucia weather in January
Is it warm? Yes. January in St Lucia is warm: afternoons average 27°C and nights 22°C. Most days (80%) peak between 26°C and 28°C.
Warm · average high
27°C
25°C or more on almost every day.
- Average low22°overnight
- Sea28°average, 2023–2025
- Rainy days945 mm in the month
- SkySome cloud39% cloud · 37% clear days
How warm it really gets
Every January afternoon from 2011–2025: 465 days. Most (80%) peaked between 26° and 28°.
January, year by year
The average January high in each year. The warmest, 2024, averaged 27°C; the coolest, 2012, 26°C.
Compared with home
Average January highs. Expect rain on about 9 days (45 mm in a typical month).
- St Lucia27°
- Cork9°
- Dublin8°
- London8°
- Belfast7°
- Manchester7°
- Glasgow6°
Warmer in January, not much further
Flying times are estimates from Dublin; St Lucia is about 8h 30m.
Warm in Jan
28°C average high
avg high · 24° at night
25°C+ on almost every day
Hot in Jan
28°C average high
avg high · 22° at night
25°C+ on almost every day
Air: ERA5 reanalysis via Open-Meteo, 2011–2025. Sea: Copernicus Marine analysis via Open-Meteo, 2023–2025. Rainy day = 2 mm or more. Clear day = average cloud cover of 30% or less. These are averages of past weather, not a forecast. Methodology