Castries Weather in July
During July, Castries experiences very high daytime temperatures of 31°C (88°F) and cooler nights around 25°C (77°F). Expect quite a bit of rainfall. Around 98 mm (3.9 in) is typical.
Rainfall in Castries in July
Historically, the month has about 21 days of rain, averaging 98 mm (3.9 in) in total. With rain spread across many days but low totals, showers are typically short and light rather than heavy.
Temperature in Castries in July
Temperatures in Castries in July top out at 31°C (88°F) and drop to 25°C (77°F) overnight. If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. Nights stay warm at around 25°C (77°F), so light bedding and good ventilation are worth thinking about.
Sunshine in Castries in July
With approximately 248 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.If your ideal day consists of dry skies and pleasant temperatures, January and February typically offer the best circumstances for Castries.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Saint Lucia, check out our Castries's climate page.
Castries Temperature in July
Min Temperature
25°C (77°F)
Max Temperature
31°C (88°F)
Chance of Rain
69%
Precipitation
98 mm (3.9 in)
Rainy days
21 days
Humidity
80% *
Sunshine
248 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Castries typically stay consistent throughout July, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in July
Historical weather for Castries in July
Browse day-by-day weather records for Castries spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Castries historical weather extremes in July
Based on weather observations in Castries between 1990 and 2025, these are the recorded extremes during July.
- The hottest July day on record in Castries reached 33°C (91°F) (July 16, 2024).
- Castries experienced its chilliest July day on July 24, 1996, reaching only 27°C (81°F).
- The coldest night in July in Castries was on July 22, 2017, with a minimum of 21°C (70°F).
Best Places in Saint Lucia in July
Find out more about the weather in Saint Lucia and which places have the best travel conditions in this month. See all of Saint Lucia in July →
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What to Wear in Castries in July
Warm weather calls for comfortable, breathable clothing in July. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Castries in July
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Saint Lucia, check out our Castries's climate page.
Temperature Rainfall Sunshine Humidity
See the full Castries climate overview or explore weather in Saint Lucia.
