December weather forecast
Guayaquil, Ecuador

Closing the year on a distinctly damp note, December in Guayaquil embraces a notable surge in rainfall that calculates to an average of 69mm (2.72") for the month. This moisture-imbued narrative, proceeding November's gentle steps, contributes a fresh layer of intrigue to the city's climatic prowess. As a nod to this wetter direction, sea temperatures swim up, matching the increasing precipitation. Importantly, a sharp decline in sunny days underpins the ascendant domain of rainclouds. Staying true to its roots, the tropical warmth sees a slight increment, sealing the year with its relentlessly consistent temperature pattern.

Temperature

The average high-temperature in Guayaquil during December is a still tropical 32.5°C (90.5°F), almost matching the conditions of the preceding month. December is noted for a mean low-temperature of 22.4°C (72.3°F).

Heat index

Throughout December, the heat index is appraised at a blistering 42°C (107.6°F). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

In Guayaquil, the average relative humidity in December is 69%.

Rainfall

In Guayaquil, in December, during 20.2 rainfall days, 69mm (2.72") of precipitation is typically accumulated. In Guayaquil, during the entire year, the rain falls for 235.3 days and collects up to 1397mm (55") of precipitation.

Sea temperature

In Guayaquil, in December, the average water temperature is 23.8°C (74.8°F).
Note: Factor in your tolerance to cold, the sunshine, the wind, and the air's warmth, and a swim in 23.8°C (74.8°F) might be tempting. It is interesting to note that Olympians compete in 25°C (77°F) to 28°C (82.4°F) water temperatures.

Daylight

With an average of 12h and 12min of daylight, December has the longest days of the year.
On the first day of December in Guayaquil, sunrise is at 06:01 and sunset at 18:16. On the last day of the month, sunrise is at 06:15 and sunset at 18:30 -05.

Sunshine

The average sunshine in December in Guayaquil is 7.9h.

UV index

The months with the highest UV index in Guayaquil are September 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 rays for average individuals.
Note: During December, 7 as the daily maximum UV index converts into the following advice:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Stay vigilant! UV rays get a boost in intensity due to sand and water reflections.