December weather forecast
Portobelillo, Panama

The first month of the winter, December, is a hot month in Portobelillo, Panama, with temperature in the range of an average high of 30.3°C (86.5°F) and an average low of 21.4°C (70.5°F).

Temperature

Portobelillo experiences a transition to a tropical 30.3°C (86.5°F) in average high-temperatures with the arrival of December, not greatly differing from November's 29.5°C (85.1°F). Nighttime temperatures hover around an average low of 21.4°C (70.5°F) in December.

Heat index

During December, the heat index is computed to be a blisteringly hot 40°C (104°F). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', reflects the blend of air temperature and relative humidity to give a temperature impression. 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 quite important for babies and toddlers. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

The average relative humidity in December is 83%.

Rainfall

In Portobelillo, in December, it is raining for 20.6 days, with typically 121mm (4.76") of accumulated precipitation. Throughout the year, in Portobelillo, there are 269.3 rainfall days, and 2235mm (87.99") of precipitation is accumulated.

Daylight

With an average of 11h and 42min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 06:20 and sunset at 18:02. On the last day of December, sunrise is at 06:35 and sunset at 18:15 EST.

Sunshine

In December, the average sunshine is 8.8h.

UV index

The months with the lowest UV index are July, August, October through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily high UV index of 6 during December translates into the following recommendations:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Employ a wide-brim hat for potent defense against up to 50% of UV rays.