December weather forecast
San Pedro, Belize

December witnesses the second-lowest average temperatures of the year, marking the arrival of winter in San Pedro, Belize. The sea temperature descends along with that of the land, though it retains sufficient warmth for any water activities. A further decrease in rainfall to an average of 82mm (3.23"), along with shorter daylight hours, cements the winter-like feel during this period. Despite the overall drop in temperature, the weather remains balmy, true to the tropical climate of the region. December concludes the climatic cycle on a cooler note, offering a stark contrast to the warm and wet midway months of the year.

Temperature

San Pedro experiences an average high-temperature of a still warm 27.2°C (81°F) in December, marking an insignificant shift from 27.9°C (82.2°F) in November. An average low-temperature of 21.7°C (71.1°F) is expected in San Pedro, Belize, during December.

Heat index

The average heat index in December is computed to be a tropical 31°C (87.8°F). Persisting in activity during exposure could lead to weariness and subsequently to heat cramps.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', ties air temperature with relative humidity to produce the perceived temperature sensation. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. 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.

Humidity

The most humid month is December, with an average relative humidity of 83%.

Rainfall

In San Pedro, during December, the rain falls for 21.4 days and regularly aggregates up to 82mm (3.23") of precipitation. Throughout the year, in San Pedro, there are 262.3 rainfall days, and 1335mm (52.56") of precipitation is accumulated.

Sea temperature

In San Pedro, in December, the average water temperature is 27.2°C (81°F).
Note: Water activities including swimming and diving at temperatures from 25°C (77°F) to 29°C (84.2°F) are deemed very pleasurable and enjoyable for extended periods, devoid of discomfort.

Daylight

With an average of 11h and 6min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 06:07 and sunset at 17:15. On the last day of December, sunrise is at 06:22 and sunset at 17:27 CST.

Sunshine

The average sunshine in December in San Pedro is 6.1h.

UV index

January, February, August, October through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 6 in December interprets into the following advice:
Guard oneself from overexposure. Defence against sun injury is vital. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Opt for tightly woven and loose clothing to enhance protection from the Sun. Note! The Sun's UV radiation gets intensified with the reflection from sand and water.