Grand Case Weather in July
Grand Case in July sees high temperatures, with highs around 29°C (84°F) and overnight lows of 26°C (79°F). Rainfall is fairly high at around 84 mm (3.3 in) on average, so pack waterproofs just in case.
Rainfall in Grand Case in July
Climate statistics over the past 30 years suggest around 17 days of rain, with 84 mm (3.3 in) average for the month. Expect plenty of grey, overcast days rather than intense storms. The rain rarely amounts to much on any given day.
Temperature in Grand Case in July
July is one of the better months to visit Grand Case. Expect 29°C (84°F) during the day and 26°C (79°F) at night. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 26°C (79°F), nights stay very warm. Air conditioning makes a real difference if you're sensitive to heat. A cold shower before bed can also help you get to sleep more comfortably.
Sunshine in Grand Case in July
The city usually sees around 258 hours of sunlight, indicating many sunny days — a great month for sightseeing.
Wind Speed in Grand Case in July
Average wind conditions reach 5 m/s (10 knots) in July. This creates lively weather with fresh winds that make small trees sway noticeably. Remember this is an average: some days are less windy while others have particularly active windy conditions.
Average water temperature in July
At 28°C (82°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Saint Martin, check out our Grand Case's climate page.
Grand Case Temperature in July
Min Temperature
26°C (79°F)
Max Temperature
29°C (84°F)
Water Temperature
28°C (82°F) *
Chance of Rain
56%
Precipitation
84 mm (3.3 in)
Rainy days
17 days
Humidity
75% *
Windspeed
5 m/s (10 knots) *
Sunshine
258 hours *
Percentage Sunshine
68% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Grand Case typically stay consistent throughout July, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 27°C (81°F).
Average temperatures in July
Historical weather for Grand Case in July
Browse day-by-day weather records for Grand Case spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Grand Case historical weather extremes in July
Based on 49 years of weather observations in Grand Case between 1976 and 2025, these are the recorded extremes.
- The warmest day in July was on July 21, 1993, with a maximum of 35°C (95°F).
- The coldest July day was on July 18, 1979, with a maximum of 27°C (81°F).
- The coldest night in July in Grand Case was on July 28, 2011, with a minimum of 17°C (63°F).
Best Places in Saint Martin in July
Find out more about the weather in Saint Martin and which places have the best travel conditions in this month. See all of Saint Martin in July →
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What to Wear in Grand Case 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. Expect water temperatures of around 28°C (82°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Grand Case 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 Martin, check out our Grand Case's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Grand Case climate overview or explore weather in Saint Martin.
