Castries, Saint Lucia skyline

Castries Weather in July

Typical July weather in Castries, Saint Lucia, based on 2006–2025 climate averages.

In July, Castries averages a high of 28.9°C (84°F) and a low of 24.7°C (76.5°F), with about 22 rainy days (106 mm of rain) and 11.5 hours of sunshine a day.

Avg high

28.9°C (84°F)

Avg low

24.7°C (76.5°F)

Rainfall

106 mm (4.2 in)

Rainy days

22 days

Sunshine

11.5 h / day

Humidity

79%

July vs the rest of the year

Here is how every month in Castries stacks up against July — the 3rd wettest month for rain.

MonthAvg highvs JulyRainRainy days
January27.1°C (80.8°F)−1.8°C (−3.2°F)47 mm15
February27.4°C (81.3°F)−1.5°C (−2.7°F)37 mm11
March28°C (82.4°F)−0.9°C (−1.6°F)39 mm13
April28.7°C (83.7°F)−0.2°C (−0.4°F)46 mm13
May29.3°C (84.7°F)+0.4°C (+0.7°F)54 mm15
June29.2°C (84.6°F)+0.3°C (+0.5°F)77 mm18
July28.9°C (84°F)—106 mm22
August29.2°C (84.6°F)+0.3°C (+0.5°F)117 mm23
September29.7°C (85.5°F)+0.8°C (+1.4°F)106 mm20
October29.1°C (84.4°F)+0.2°C (+0.4°F)117 mm21
November28.3°C (82.9°F)−0.6°C (−1.1°F)94 mm19
December27.7°C (81.9°F)−1.2°C (−2.2°F)51 mm15

What July feels like in Castries

As a tropical city, Castries is warm all year; July is not part of a clear dry or wet season. The midday hours are hot; shade and water matter on long walks. Little changes after sunset — nights stay warm, only slightly below the daytime level. The air is muggy, so it feels hotter than the thermometer suggests.

Rain in Castries in July

Dry days are the exception, with rain on most days. Each rainy day adds about 4.8 mm (0.2 in), a proper wetting rather than a sprinkle. Across the year Castries averages about 4.3 mm per rainy day, so July is typical. It is among the three wettest months of the year.

How July compares to the rest of the year

Ranked by average high, July comes out as the 6th warmest month in Castries. Against June, the average high is 0.3°C (0.5°F) lower, with 29 mm more rain. Temperatures barely move from one month to the next here. August averages a high of 29.2°C (84.6°F).

Who July suits

  • Sightseeing: less ideal — rain falls on more than half the days.
  • Parks & outdoor: less ideal — afternoons are too warm to linger outside.
  • Museums & indoor: a good choice — with rain on most days, galleries and museums make easy plans.

Tips for visiting Castries in July

Rain Protection

Keep a small umbrella in your bag and wear shoes that cope with puddles.

Sun Protection

Loose, breathable clothing plus sunscreen and a wide-brimmed hat.

Quick questions

How warm is Castries in July?

Expect around 28.9°C (84°F) in the afternoon and 24.7°C (76.5°F) at night, which most visitors would call hot.

Does it rain a lot in Castries in July?

Yes, fairly — rain falls most days and totals about 106 mm, so an umbrella is worth carrying.

What should I wear in Castries in July?

The numbers point to rain protection and sun protection. There is little need to change for the evening.

Is July or August better for visiting Castries?

July scores better on our climate ranking (#11 of 12 vs #12), rated Fair against Fair. August has more rainy days.

Is July a good time to visit Castries?

Fair

Fair — warm to hot days, rain on most days (about 22), plenty of sunshine (11.5 h a day). Within Castries's own year, July ranks #11 of 12 — one of the least comfortable months.

Drier places in July

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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.