December weather forecast
Calmay, Philippines

December, the first month of the winter in Calmay, is still a hot month, with an average temperature varying between 31.5°C (88.7°F) and 22.7°C (72.9°F).

Temperature

The commencement of December notes an average high-temperature of a still tropical 31.5°C (88.7°F), exhibiting little difference from the previous month. In December, Calmay's temperature tends to fall to an average low of 22.7°C (72.9°F) during the night.

Heat index

The heat index value during December is calculated to be a blisteringly hot 40°C (104°F). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
Data suggests that the heat index is set for environments in shade and with a light wind. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', comes about by integrating the temperature readings with the humidity levels. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In Calmay, Philippines, the average relative humidity in December is 72%.

Rainfall

In Calmay, during December, the rain falls for 5.9 days and regularly aggregates up to 18mm (0.71") of precipitation. In Calmay, Philippines, during the entire year, the rain falls for 187.6 days and collects up to 1079mm (42.48") of precipitation.

Daylight

December has the shortest days of the year in Calmay, with an average of 11h and 12min of daylight.
On the first day of December, sunrise is at 6:10 am and sunset at 5:25 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 5:37 pm PST.

Sunshine

The months with the least sunshine in Calmay are January and December, with an average of 7.4h of sunshine.

UV index

The months with the highest UV index in Calmay are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: In December, the UV index of 7 transforms into the following advice:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.