Grand Case Weather in January

January in Grand Case typically sees daytime highs of 27°C (81°F) and nighttime lows of 24°C (75°F). Expect some rainfall during the month.

Rainfall in Grand Case in January

This month experiences about 17 days of rain according to historical data, averaging 40 mm (1.6 in). Rain falls on many days this month, but usually in relatively small amounts. A light waterproof is more useful than a heavy umbrella.

Temperature in Grand Case in January

Grand Case in January is worth a visit. The temperature is perfect, with 27°C (81°F) during the day and 24°C (75°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. At 24°C (75°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.

Sunshine in Grand Case in January

Expect sunny days throughout the month, with an estimated 255 hours of sunshine. This makes it a pleasant time to visit Grand Case.

Wind Speed in Grand Case in January

January has wind speeds averaging 5 m/s (10 knots). You can expect gentle to moderate winds that move small trees and make flags wave steadily on typical days. Conditions typically range from light breezes to moderate winds.

Average water temperature in January

At 26°C (79°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.

If your ideal day consists of dry skies and pleasant temperatures, January, February, March, April, May, June, July and December typically offer the best circumstances for Grand Case.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
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• July
• August

• September
• October
• November
• December

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 January

Min Temperature 24°C (75°F)  

Max Temperature 27°C (81°F)  

Water Temperature 26°C (79°F) *  

Chance of Rain 58%  

Precipitation 40 mm (1.6 in)  

Rainy days 17 days  

Humidity 76% *  

Windspeed 5 m/s (10 knots) *  

Sunshine 255 hours *  

Percentage Sunshine 75% *  

* Data from: Sint Maarten, Sint Maarten (8 KM, 5 Miles).

Daily Historical Temperatures

51-year average (1976-2026)

Based on our historical records, temperatures in Grand Case typically stay consistent throughout January, with daily highs averaging around 27°C (81°F). Nights are warm, with lows around 24°C (75°F).

Average temperatures in January

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Historical weather for Grand Case in January

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.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Grand Case historical weather extremes in January

Based on 49 years of weather observations in Grand Case between 1976 and 2025, these are the recorded extremes.

• The hottest January day on record in Grand Case reached 32°C (90°F) (January 8, 1992).
• The coldest January day was on January 30, 2005, with a maximum of 24°C (75°F).
• The lowest overnight temperature recorded in January was 16°C (61°F) (January 27, 2020).

What to Wear in Grand Case in January

Warm weather calls for comfortable, breathable clothing in January. 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). Some rain is possible, so pack something to handle light showers. The water temperature sits at about 26°C (79°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Grand Case in January

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

10/10

Cycling

8/10

Walking

8/10

Barbeque

10/10

Camping

10/10

Outdoor sports

8/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Saint Martin, check out our Grand Case's climate page.

More climate data for Grand Case

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Grand Case climate overview or explore weather in Saint Martin.