The "coldest" month in St. Kitts is typically February, though in the Caribbean, "cold" is a relative term. In February 2026, you can expect daily high temperatures to reach a very comfortable 28°C (82°F), with night-time lows dipping to around 22°C (71°F). This period marks the height of the "cool, dry season," characterized by lower humidity and consistent "Trade Winds" that make the air feel much fresher than the sweltering heat of August or September. The sea temperature remains a balmy 26°C (79°F), making it perfect for swimming. Because of this ideal "low-80s" weather, February is considered peak tourist season in St. Kitts and Nevis; while the air is technically at its annual minimum, it is arguably the most pleasant time of year to visit, offering bright sunshine for about 8 hours a day with only occasional "liquid sunshine" (brief tropical showers) that rarely last more than a few minutes.