With a population of around 6,000, Koolbaai sits in 00, SX. The city operates in the America/Lower Princes time zone.
In 2025, Koolbaai recorded an average annual temperature of 81°F. The hottest temperatures reached 86°F in October; the coolest were 74°F in April. Total precipitation for the year was 30 inches, with the wettest month being October.
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