Koolbaai Weather in June
Thinking of visiting Koolbaai in June? Expect high temperatures reaching 29°C (84°F) during the day, dropping to 26°C (79°F) at night, and note that quite a bit of rainfall is likely.
Rainfall in Koolbaai in June
Rain is expected on roughly 13 days, totalling around 62 mm (2.4 in) for the month. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.
Temperature in Koolbaai in June
Koolbaai in June is worth a visit. The temperature is perfect, with 29°C (84°F) during the day and 26°C (79°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With lows of 26°C (79°F), it stays warm throughout the night. A cold shower before going to sleep is one of the easiest ways to cool down before bed.
Sunshine in Koolbaai in June
The days are predominantly sunny, with an estimated total of around 244 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.
Wind Speed in Koolbaai in June
Wind speeds average 5 m/s (10 knots) during June. At this speed, gentle to moderate breezes make small trees sway and the wind creates whitecaps on water bodies. Daily variations range from moderate winds to stronger breezes, creating excellent conditions for sailing, kite flying and wind sports.
Average water temperature in June
At 27°C (81°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 Koolbaai.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Sint Maarten, check out our Koolbaai's climate page.
Koolbaai Temperature in June
Min Temperature
26°C (79°F)
Max Temperature
29°C (84°F)
Water Temperature
27°C (81°F) *
Chance of Rain
44%
Precipitation
62 mm (2.4 in)
Rainy days
13 days
Humidity
76% *
Windspeed
5 m/s (10 knots) *
Sunshine
244 hours *
Percentage Sunshine
64% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Koolbaai typically stay consistent throughout June, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in June
Historical weather for Koolbaai in June
Browse day-by-day weather records for Koolbaai spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Koolbaai historical weather extremes in June
Based on weather observations in Koolbaai between 1979 and 2025, these are the recorded extremes during June.
- The hottest June day on record in Koolbaai reached 33°C (91°F) (June 15, 2001).
- The coldest June day was on June 18, 1986, with a maximum of 26°C (79°F).
- The lowest overnight temperature recorded in June was 22°C (72°F) (June 17, 1994).
Best Places in Sint Maarten in June
Find out more about the weather in Sint Maarten and which places have the best travel conditions in this month. See all of Sint Maarten in June →
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What to Wear in Koolbaai in June
Warm weather calls for comfortable, breathable clothing in June. 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). Rain is likely on several days, so bring a good rain jacket. With water temperatures around 27°C (81°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Koolbaai in June
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 Sint Maarten, check out our Koolbaai's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Koolbaai climate overview or explore weather in Sint Maarten.
