May weather forecast
Cartagena, Colombia

May further intensifies the wet season in Cartagena. The rainfall increases notably to 135mm (5.31") making it one of the rainiest months in the city. Alongside this, cloud cover also witnesses a noticeable rise. However, the temperatures remain consistently high, and the city continues to be blessed with ample sunshine hours. Despite the higher rainfall, May is still a good time to visit Cartagena owing to the maintained temperatures and daylight hours.

Temperature

May in Cartagena begins with an average high-temperature of a still tropical 30.8°C (87.4°F), reflecting close similarity to the preceding month. Nighttime readings in Cartagena during May register a minimal drop from daytime highs, averaging at a moderately hot 26.8°C (80.2°F).

Heat index

May's mean heat index is calculated to be an extremely hot 40°C (104°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

The average relative humidity in May is 78%.

Rainfall

In Cartagena, Colombia, in May, it is raining for 24.8 days, with typically 135mm (5.31") of accumulated precipitation. Throughout the year, in Cartagena, there are 210.6 rainfall days, and 1115mm (43.9") of precipitation is accumulated.

Sea temperature

In May, the average sea temperature is 28.7°C (83.7°F).
Note: For swimming, diving, and various water activities, the temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as highly enjoyable and comfortable for extended durations without any discomfort.

Daylight

The average length of the day in May in Cartagena is 12h and 37min.
On the first day of the month, sunrise is at 05:43 and sunset at 18:14. On the last day of May, sunrise is at 05:38 and sunset at 18:20 -05.

Sunshine

In Cartagena, the average sunshine in May is 10.7h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Cartagena, Colombia. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 7 in May transforms into the following instructions:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Notice! Sand and water reflections contribute to a stronger UV exposure.