Grand Case Weather in October
With daytime temperatures of 29°C (84°F) and nighttime lows of 26°C (79°F), October in Grand Case brings high temperatures during the day. It is also the wettest month of the year, so pack an umbrella.
Rainfall in Grand Case in October
Since this is the rainiest month of the year, it's a good idea to carry an umbrella just in case. Typically, you can expect about 20 days of rain this month, with 139 mm (5.5 in) on average. This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.
Temperature in Grand Case in October
In October, Grand Case sees high temperatures, with highs of 29°C (84°F). Nights drop to around 26°C (79°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. 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 October
With approximately 244 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.
Wind Speed in Grand Case in October
In October, average wind speeds reach 4 m/s (8 knots), leading to light to moderate breezes. Conditions vary from day to day, with both calm and windier periods.
Average water temperature in October
The water temperature is 28°C (82°F), which most people find very comfortable. A good month for swimming and water sports.For Grand Case itself, January, February, March, April, May, June, July and December generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
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 October
Min Temperature
26°C (79°F)
Max Temperature
29°C (84°F)
Water Temperature
28°C (82°F) *
Chance of Rain
68%
Precipitation
139 mm (5.5 in)
Rainy days
20 days
Humidity
80% *
Windspeed
4 m/s (8 knots) *
Sunshine
244 hours *
Percentage Sunshine
65% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Grand Case typically stay consistent throughout October, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in October
Historical weather for Grand Case in October
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 October
Our historical data for Grand Case spans 1976 to 2025, revealing these weather extremes.
- Grand Case recorded its highest October temperature of 34°C (93°F) on October 29, 1987.
- On October 26, 2007, Grand Case saw its coldest October day with temperatures maxing out at 26°C (79°F).
- Nighttime temperatures dropped to 20°C (68°F) on October 25, 2011, marking the coldest October night on record.
Best Places in Saint Martin in October
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 October →
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What to Wear in Grand Case in October
Warm but pleasant conditions in Grand Case in October. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. 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. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Grand Case in October
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.
