Nassau experiences a consistent, warm maritime climate defined by minimal thermal variation and distinct rainfall patterns. WeatherBox data shows that the average daily temperature in summer settles around 27.9°C (82.2°F), while the winter months remain mild with an average of 22.9°C (73.2°F). Extreme heat is uncommon, as temperatures rarely exceed 29.5°C (85.1°F), yet the air retains tropical heat year-round. Even during the coolest periods, the thermometer seldom drops below 18.9°C (66.0°F), ensuring frost-free conditions. The sun is a dominant factor, and the average peak UV Index is 9.8, indicating intense solar exposure.
Precipitation levels drive the primary seasonal differences rather than temperature. The region accumulates 1,000 mm (39 in) of rain annually, but the distribution varies significantly between the wet and dry seasons. During the rainiest month, precipitation averages 147 mm (6 in), creating periods of heavy cloud cover that peaks at 77.8. In contrast, the driest month sees only 34 mm (1 in) of rain. This moisture contributes to sticky humidity, with relative humidity levels reaching a high of 80.9, making the air feel denser during the wetter intervals.
Breezes from the Atlantic play a crucial role in moderating the humidity. The prevailing winds blow from the E, with the highest average wind speeds reaching 23.7 km/h (14.7 mph). These winds are generally steady, as speeds rarely exceed 41.5 km/h (25.8 mph). When the rain clears, the area enjoys abundant light, recording up to 323.6 of sunshine during the brightest month. For detailed visualisations and specific planning data, explore the advanced weather charts on the WeatherBox website.
