December weather forecast
San Carlos City, Philippines

December, the first month of the winter in San Carlos City, is still a tropical month, with an average temperature ranging between max 31.5°C (88.7°F) and min 22.7°C (72.9°F).

Temperature

With the advent of December, San Carlos City experiences an average high-temperature of a still hot 31.5°C (88.7°F), mirroring a close resemblance to the previous month. San Carlos City observes an average nighttime low-temperature of 22.7°C (72.9°F) during the month of December.

Heat index

December's average heat index is evaluated at a blistering 40°C (104°F). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', melds the effects of warmth and moisture to generate a feeling of heat. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

The average relative humidity in December in San Carlos City is 73%.

Rainfall

In December, the rain falls for 8.9 days. Throughout December, 20mm (0.79") of precipitation is accumulated. In San Carlos City, during the entire year, the rain falls for 215.1 days and collects up to 1115mm (43.9") of precipitation.

Daylight

December has the shortest days of the year, 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 6:25 am and sunset at 5:37 pm PST.

Sunshine

January and December, with an average of 7.3h of sunshine, are months with the least sunshine in San Carlos City, Philippines.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index in San Carlos City are January through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: In December, a regular UV index of 7 translates into these guidelines:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.