Cartagena, Colombia sits along the Caribbean coast, and its weather remains consistently warm throughout the year. Visitors quickly notice that the city experiences minimal temperature variation, with average conditions staying reliably tropical. Understanding these patterns helps travelers pack appropriately and choose the best time for sightseeing.
Annual Average Temperature Overview
Meteorological data for Cartagena reveals an average annual temperature hovering around 27°C or 81°F. This figure represents a balance between daytime highs and nighttime lows across all months. Unlike temperate climates, the thermometer rarely drops significantly, even during the so-called "cooler" season.
Monthly Temperature Breakdown
Looking at the monthly averages provides a clearer picture of what to expect. During the peak dry season from December to April, daily highs typically reach 31°C or 88°F, while lows settle around 21°C or 70°F. In the green season from May to November, temperatures remain similar, with highs of 31°C or 88°F and lows near 22°C or 72°F, though rainfall increases significantly.
Sea Temperature and Humidity
The Caribbean Sea surrounding Cartagena maintains a warm temperature suitable for swimming year-round. Sea temperatures average between 28°C and 29°C or 82°F and 84°F, feeling like bathwater to many visitors. Combined with high humidity levels, which often range from 70% to 90%, the perceived temperature frequently feels warmer than the actual reading.
Microclimates and Urban Heat
Within the walled city and modern neighborhoods, the urban environment can create a heat island effect. Stone buildings and narrow streets in the historic center absorb heat during the day and release it slowly at night. This means that evening walks through Old Town might feel slightly warmer than open coastal areas or shaded hotel pools.
Best Times to Visit Based on Temperature
Travelers seeking the most comfortable conditions often target the dry season from mid-December to late April. During this period, humidity is slightly lower and rain is less frequent, though temperatures remain consistently warm. Those who prefer fewer crowds and don't mind occasional showers might find the green season more appealing, as the landscape is lush and accommodations are often available at better rates.
