Monthly climate guide
Castries weather in July
July in Castries is typically hot, with average daytime highs around 29°C (84°F) and night-time lows near 28°C (82°F). The month usually brings about 99 mm of rain (wet) and is a mix of sun and cloud. Daytime highs are about the same as June and about the same as August.
What stands out in July
- There's little difference between day and night (around 1°C).
- Humidity near 79% makes 29°C feel stickier than it sounds.
- Nights stay warm, rarely below 28°C — air-conditioning helps.
Avg high
29°C
84°F
Avg low
28°C
82°F
Rainfall
99 mm
wet
Humidity
79%
relative
Sky
51%
cloud · a mix of sun and cloud
Castries weather by month
Show the monthly averages as a table
| 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 July
- 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
Is July a good time to visit Castries?
Compare the months in the chart above to find your ideal window.
Best time to visit Castries →Cite or embed this data
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Castries weather in July. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/saint-lucia/castries/july
<a href="https://weathercompare.eu/weather/saint-lucia/castries/july">Castries weather in July</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/saint-lucia/castries" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Castries weather in July"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/saint-lucia/castries/july">Castries weather in July</a> – WeatherCompare</p>
Castries in July: quick answers
Is July a good time to visit Castries?
July is one of the wetter months in Castries, with about 99 mm of rain. You can still go: pack a rain jacket and keep plans flexible.
How warm is Castries in July?
Average highs are about 29°C (84°F) and average lows about 28°C (82°F), based on 10 years of daily data.
Does it rain a lot in Castries in July?
Castries typically gets around 99 mm of rain in July — wet.
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.