Castries, Saint Lucia skyline

Castries Weather in March

What March is usually like in Castries, Saint Lucia — from 2006–2025 averages.

Expect Castries to reach about 28°C (82.4°F) by day and 23.2°C (73.8°F) at night in March, with 13 rainy days bringing 39 mm and around 11.6 hours of sunshine each day.

Avg high

28°C (82.4°F)

Avg low

23.2°C (73.8°F)

Rainfall

39 mm (1.5 in)

Rainy days

13 days

Sunshine

11.6 h / day

Humidity

72%

March vs the rest of the year

March is warmer than 3 of the other 11 months, and the 2nd driest month in Castries.

MonthAvg highvs MarchRainRainy days
January27.1°C (80.8°F)−0.9°C (−1.6°F)47 mm15
February27.4°C (81.3°F)−0.6°C (−1.1°F)37 mm11
March28°C (82.4°F)—39 mm13
April28.7°C (83.7°F)+0.7°C (+1.3°F)46 mm13
May29.3°C (84.7°F)+1.3°C (+2.3°F)54 mm15
June29.2°C (84.6°F)+1.2°C (+2.2°F)77 mm18
July28.9°C (84°F)+0.9°C (+1.6°F)106 mm22
August29.2°C (84.6°F)+1.2°C (+2.2°F)117 mm23
September29.7°C (85.5°F)+1.7°C (+3.1°F)106 mm20
October29.1°C (84.4°F)+1.1°C (+2°F)117 mm21
November28.3°C (82.9°F)+0.3°C (+0.5°F)94 mm19
December27.7°C (81.9°F)−0.3°C (−0.5°F)51 mm15

What March feels like in Castries

As a tropical city, Castries is warm all year; March is not part of a clear dry or wet season. The midday hours are hot; shade and water matter on long walks. The gap between afternoon and night is small, so nights stay warm and the temperature hardly changes after dark. Some humidity hangs in the air, noticeable when the sun is strong.

Rain in Castries in March

March is persistently wet here: some rain falls on about one day in 2. Most wet days bring only light rain — about 3 mm (0.1 in) on a typical rainy day — the kind of drizzle or short shower that rarely stops plans for long. That is lighter than the city's yearly norm of about 4.3 mm per rainy day. It is among the three driest months of the year.

How March compares to the rest of the year

In Castries's temperature order, March sits as the 4th coolest month. Afternoons run 0.6°C (1.1°F) warmer than in February, with 2 mm more rain. Temperatures barely move from one month to the next here. April averages a high of 28.7°C (83.7°F).

Who March suits

  • Sightseeing: a good fit — daytime temperatures are fine for walking around.
  • Parks & outdoor: less ideal — afternoons are too warm to linger outside.

Tips for visiting Castries in March

Rain Protection

A packable rain jacket saves the day on showery afternoons.

Sunglasses

Bright days make sunglasses worth packing.

Quick questions

How warm is Castries in March?

It feels hot: typical highs are 28°C (82.4°F), with lows near 23.2°C (73.8°F).

Does it rain a lot in Castries in March?

Yes, fairly — rain falls about one day in 2 and totals about 39 mm, so an umbrella is worth carrying.

What should I wear in Castries in March?

Pack rain protection and sunglasses. Evenings feel similar to the day, so the same clothes work from morning to night.

Is March or April better for visiting Castries?

April scores better on our climate ranking (#2 of 12 vs #3), rated Good against Good.

Is March a good time to visit Castries?

Good

Good — warm to hot days, frequent rain (about 13 rainy days), plenty of sunshine (11.6 h a day). Within Castries's own year, March ranks #3 of 12 — one of the 3 best months to visit.

Drier places in March

Plan a trip to Castries

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Monthly averages from 20 years of Open-Meteo history (2006–2025), not a forecast — see all 12 months in Castries weather by month.