December weather forecast
Isabel, Philippines

December, the first month of the winter in Isabel, is also a moderately hot month, with an average temperature varying between 29.2°C (84.6°F) and 25.2°C (77.4°F).

Temperature

Stepping into December, Isabel records an average high-temperature of a still warm 29.2°C (84.6°F), almost consistent with November. During December, Isabel's nighttime temperatures demonstrate a subtle cooling from daytime highs, stabilizing at a still moderately hot 25.2°C (77.4°F).

Heat index

For December, the heat index is appraised at a torrid 36°C (96.8°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

The average relative humidity in December is 81%.

Rainfall

In December, the rain falls for 18.4 days. Throughout December, 86mm (3.39") of precipitation is accumulated. Throughout the year, in Isabel, there are 250 rainfall days, and 824mm (32.44") of precipitation is accumulated.

Sea temperature

In Isabel, in December, the average water temperature is 28.2°C (82.8°F).
Note: Water activities in surface temperatures between 25°C (77°F) and 29°C (84.2°F) are seen as exceptional and extremely agreeable for lengthened time spans.

Daylight

With an average of 11h and 30min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 5:45 am and sunset at 5:17 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 5:30 pm PST.

Sunshine

In December, the average sunshine is 7.6h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 7 in December transforms into the following instructions:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Take note! The UV strength of the Sun elevates when reflected off water and sand.