Travel time: Year-round
San Pedro, located on the island of Ambergris Caye in Belize, features a tropical monsoon climate characterized by consistent warmth and distinct wet and dry seasons. Unlike temperate regions, the destination does not experience traditional "winter" or "summer" based on temperature; instead, the seasons are defined by shifts in precipitation and cloud cover. The air is typically humid and oppressive year-round, but the island's geography allows for steady trade winds that moderate the feel of the heat.
A typical day in San Pedro begins with high humidity and clear skies. As the sun rises, temperatures climb quickly, peaking in the early afternoon. On the coast, a maritime influence is dominant—mornings are often the calmest time for the sea. By mid-afternoon, "Easterly Trade Winds" usually pick up, providing a natural cooling effect that makes the 85°F (29°C) to 90°F (32°C) highs feel more manageable. In the rainy season, clouds often build during the afternoon, leading to torrential but brief downpours that clear out by evening, leaving the nights balmy and humid.
This is often referred to as the peak season for travel.
While San Pedro is relatively small, the northern part of Ambergris Caye can experience slightly different conditions than the town center. The breeze is often stronger on the windward (eastern) side of the island facing the Belize Barrier Reef, whereas the leeward (western) side, facing the mainland, can feel several degrees hotter due to less air circulation and stagnant lagoon waters.
Between November and February, San Pedro is occasionally affected by Tehuantepecers or "Northers." These are cold fronts that push down from the United States and Mexico. They bring a sudden shift in wind direction (from East to North), choppy seas, and a noticeable drop in humidity. For locals, a "Norher" is a welcome break from the tropical heat, often prompting the use of light sweaters.
Historically, San Pedro was a fishing village where life was dictated by the sea and sky. Locals have adapted to the heat by designing buildings with high ceilings and large windows to maximize cross-ventilation. During the hurricane season, the community maintains a high level of weather awareness, as the island's low elevation makes it vulnerable to storm surges.
In San Pedro, the "feels like" temperature is almost always higher than the actual thermometer reading due to the high relative humidity, which rarely drops below 70%. In the height of May and August, the heat index can easily reach 100°F (38°C). However, the salt air and the constant presence of the reef-front breeze create a sensory experience that feels refreshing rather than stifling, provided you are near the shoreline.