Saint Lucia
Castries · Caribbean Sea

Marigot Bay BeachSea temperature now

Coastal beach near Marigot.

Very warm water with a light chop and a light breeze — great swimming conditions.

Sea temperature now
28.1°Ctropical
Excellent
Updated just now · Source: Open-Meteo Marine
Air
Waves
Wind
UV

Location

Marigot Bay Beach on the map, with nearby beaches and live sea temperatures.

7-day forecast

Water, air, waves, wind and UV outlook for the week ahead.

Monthly sea temperature averages

Typical year-round water temperature, based on regional climatology.

Best time to swim in Marigot Bay Beach

The sea in Marigot Bay Beach peaks in August, when the water averages around 29°C.

The main swimming season runs from January – December, when surface temperatures stay comfortable for extended sessions.

On average, 12 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.

The coldest month is typically January at around 27°C, when cold-water swimmers dominate the coast.

Marigot Bay Beach sea temperature history

Long-term climatology for Marigot Bay Beach shows an annual mean sea temperature of 28°C, ranging from 27°C in winter to 29°C at the summer peak.

The seasonal swing is roughly 2°C between the coldest and warmest month — a useful yardstick when comparing years or checking whether the current sea is running above or below average.

Recent decades have trended slightly warmer at Marigot Bay Beach, in line with regional sea-surface temperature records for the wider basin.

Monthly averages below are drawn from multi-decadal climatology and are updated as new observations arrive.

Jan
27°C
Feb
27°C
Mar
27°C
Apr
27°C
May
28°C
Jun
28°C
Jul
28°C
Aug
29°C
Sep
29°C
Oct
28°C
Nov
28°C
Dec
27°C

Marigot Bay Beach sea temperature: frequently asked questions

What is the warmest month to swim in Marigot Bay Beach?

August is the warmest month in Marigot Bay Beach, when the sea averages about 29°C. Late-season warmth often persists a few weeks after peak.

When is the sea coldest in Marigot Bay Beach?

The coldest month in Marigot Bay Beach is typically January, when the water averages around 27°C. Cold-water swimmers and surfers dominate this period.

When can you swim in Marigot Bay Beach without a wetsuit?

The main swimming season in Marigot Bay Beach runs from January – December — about 12 months a year when the sea sits above 20°C, the level most swimmers describe as pleasant without a wetsuit.

Do I need a wetsuit in Marigot Bay Beach?

Marigot Bay Beach stays warm year-round, so most swimmers never need a wetsuit — a rash guard is usually enough for sun and wildlife protection.

What is the average sea temperature in Marigot Bay Beach?

The long-term annual mean sea temperature in Marigot Bay Beach is about 28°C, based on multi-decadal climatology of the surrounding waters.

How do I check the current sea temperature in Marigot Bay Beach?

The live reading at the top of this page shows the current sea temperature in Marigot Bay Beach, updated hourly from marine buoy and satellite data. The 7-day forecast covers water, air, waves, wind and UV for the week ahead.

Year-round sea temperature

Best swim months: Jan – Feb – Mar – Apr – May – Jun – Jul – Aug – Sep – Oct – Nov – Dec

MonthSeaComfort
Jan27°CHot
Feb27°CHot
Mar27°CHot
Apr27°CHot
May28°CHot
Jun28°CHot
Jul28°CHot
Aug29°CHot
Sep29°CHot
Oct28°CHot
Nov28°CHot
Dec27°CHot

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