St Lucia
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St Lucia

March beach and weather guide

Based on 5 years of historical ERA5 climate data

Photo by Germine Sealy on Unsplash

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March beach conditions — historical average

Excellent
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📈 Our data shows more favourable conditions in 2024-2025 compared to 2021-2022 for this destination and time of year
27.9°C Temp
27.8°C Sea temp
7.2 Rain days
11.6h Sunshine hrs
73.4% Humidity
100%

Reliable conditions

5 of 5 years were good

Year by year — mid March

2025 Excellent 28.5°C · 7 rainy days · 11.7h sun
2024 Excellent 29.4°C · 4 rainy days · 11.7h sun
2023 Excellent 28.0°C · 7 rainy days · 11.7h sun
2022 Good 26.5°C · 10 rainy days · 11.7h sun
2021 Excellent 27.1°C · 8 rainy days · 11.4h sun

Other months in St Lucia

November December January February March April

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Each trip type is scored on what matters most for it — snow days for skiing, sea temp for beach, sunshine for sightseeing.

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About St Lucia in March

Based on 5 years of ERA5 historical climate data, March in St Lucia has historically been excellent for a beach holiday. Average temperatures of 27.9°C with sea temperatures around 27.8°C and 7.2 rainy days on average.

5 of the last 5 years had good beach conditions during this period. This data uses ERA5 reanalysis records — real historical measurements, not generalised averages.

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