Saint Lucia

St. Lucia in January: weather, sea & travel advice

This month's data profile

Rain shapes the decision

St. Lucia in January is climatically well suited to beach holidays, family holidays and city breaks. The average daily high is around 27 °C, and the sea is about 27 °C. With about 15 rainy days it is wet.

Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.

Rank among 12 monthly averages

72/100 · #4

Warmth

#11

Dryness

Sun

#10

Sea warmth

#10

Published best categories: Overall, Beach, City break, Family

St. Lucia · JanuaryPhoto: DavidMPyle · CC BY 4.0

Average high: 27 °C
Average low: 26 °C
Sea: 27 °C
Rainy days (est.): 15 rainy days (est.)
Sun (est.): 6 h/day
Humidity: 75 %

Climate evidence with direct month comparison

The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.

Climate averages for St. Lucia: selected and adjacent months
Month	Avg high °C	Avg low °C	Rainy days (est.)	Precipitation mm	Sun h/day (est.)	Humidity %	Wind m/s	Sea °C	Score
December	28	27	16	86	6.0	76	6.3	28	69
January (selected)	27	26	15	68	6.3	75	6.7	27	72
February	27	25	11	53	7.1	74	6.7	27	81

How do the previous and next months compare?

Baseline: January (72/100)

Positive and negative values show the change from the selected month.

	Score Δ	Average high Δ	Average low Δ	Rainy days Δ	Rain Δ	Sun Δ	Humidity Δ	Wind Δ	Sea Δ
December	-3	+0.6 °C	+0.7 °C	+0.9	+17.9 mm	-0.3 h	+1 %	-0.4 m/s	+0.7 °C
February	+9	-0.1 °C	-0.3 °C	-4.1	-15.4 mm	+0.8 h	-1 %	±0 m/s	-0.3 °C

All twelve months in context

JanGood72 FebExcellent81 MarExcellent81 AprGood75 MayGood69 JunLimited63 JulLimited61 AugLimited58 SepLimited58 OctLimited58 NovLimited60 DecGood69

Rainy days (estimated)

Sunshine hours (estimated)h/day

Average daily high°C

Sea temperature°C

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Where to stay in St. Lucia

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Useful next decisions

St. Lucia · Month by month

Aruba · January Grenada · January Barbados · January San Andrés · January

Frequently asked questions

How warm is St. Lucia in January?

The average daily high is around 27 °C, with an average daily low of about 26 °C.

Can you swim in St. Lucia in January?

The sea is about 27 °C (very warm).

Does it rain a lot in St. Lucia in January?

The curated estimate is about 15 rainy days per month, not a directly measured long-term average. Total precipitation averages around 68 mm for the month. A rainy day does not mean all-day rain.

When is the best time to visit St. Lucia?

By the climate score, January, February, March and April are the strongest months for St. Lucia. For a beach trip: January, February, March and April. January is one of them.