December weather forecast
Biñan, Philippines

In December, temperatures in Biñan moderate down to a more comfortable range. While the dry spell continues, sporadic bursts of slight rainfall of 58mm (2.28") across approximately 13.4 days, add a refreshing change. Unlike November, wind speed increases slightly, enhancing the time outdoors. Wrapping up the year, December forms the bridge to the cooler part of the year, setting the tone for the year ahead.

Temperature

The transition into December reveals an average high-temperature of a still moderately hot 29.1°C (84.4°F), mirroring a close resemblance to November. In December, Biñan records an average nighttime temperature of 23.8°C (74.8°F).

Heat index

The heat index value during December is estimated at a fiery hot 35°C (95°F). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', melds the effects of warmth and moisture to generate a feeling of heat. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

The average relative humidity in December is 80%.

Rainfall

In December, in Biñan, the rain falls for 13.4 days. Throughout December, 58mm (2.28") of precipitation is accumulated. Throughout the year, there are 206.9 rainfall days, and 944mm (37.17") of precipitation is accumulated.

Daylight

With an average of 11h and 18min of daylight, December has the shortest days of the year in Biñan.
On the first day of December, sunrise is at 6:04 am and sunset at 5:25 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 5:37 pm PST.

Sunshine

The average sunshine in December is 6h.

UV index

January, July and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: In December, the maximum UV index of 6 translates into these guidelines:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.