Monthly climate guide

Castries weather in April

Expect hot weather in Castries in April: afternoons reach about 28°C (82°F), while nights drop to around 26°C (79°F). Around 81 mm of rain falls over the month (some rain), and skies are a mix of sun and cloud. Daytime highs are about the same as March and about the same as May.

What stands out in April

Even after dark it stays around 26°C, so sleeping can feel warm.
Days and nights are close, only about 2°C apart.
It's humid — around 76% — so the heat feels heavier.

Avg high

28°C

82°F

Avg low

26°C

79°F

Rainfall

81 mm

some rain

Humidity

76%

relative

Sky

54%

cloud · a mix of sun and cloud

Live Castries forecast Where else to go in April

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Castries weather by month

Low → high °C Rain (mm)

Show the monthly averages as a table

Average monthly climate in Castries
Month	Avg high	Avg low	Rain	Humidity	Cloud cover
January	27°C / 81°F	26°C / 79°F	50 mm	76%	39%
February	27°C / 81°F	26°C / 78°F	37 mm	75%	38%
March	27°C / 81°F	26°C / 78°F	40 mm	75%	45%
April	28°C / 82°F	26°C / 79°F	81 mm	76%	54%
May	28°C / 83°F	27°C / 80°F	79 mm	78%	59%
June	29°C / 84°F	27°C / 81°F	82 mm	79%	64%
July	29°C / 84°F	28°C / 82°F	99 mm	79%	51%
August	29°C / 84°F	28°C / 82°F	133 mm	79%	49%
September	29°C / 85°F	28°C / 83°F	110 mm	78%	51%
October	29°C / 84°F	28°C / 82°F	122 mm	78%	56%
November	29°C / 83°F	27°C / 81°F	135 mm	79%	53%
December	28°C / 82°F	27°C / 80°F	67 mm	77%	40%

What to pack for April

Light, breathable clothing (cotton or linen)
A sun hat and high-SPF sunscreen
A refillable water bottle
A compact umbrella or packable rain jacket
Water-resistant shoes
Quick-dry fabrics — it feels stickier than the temperature suggests

Full season-by-season packing guide →

Is April a good time to visit Castries?

Compare the months in the chart above to find your ideal window.

Best time to visit Castries →

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Castries weather in April. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/saint-lucia/castries/april

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Castries in April: quick answers

Is April a good time to visit Castries?

April is a reasonable time for Castries: highs around 28°C and about 81 mm of rain, though not one of the three best months.

How warm is Castries in April?

Average highs are about 28°C (82°F) and average lows about 26°C (79°F), based on 10 years of daily data.

Does it rain a lot in Castries in April?

Castries typically gets around 81 mm of rain in April — some rain.

Figures are long-term averages for the area around Castries (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.