December weather forecast
San Jose City, Philippines

December, the first month of the winter in San Jose City, is also a moderately hot month, with an average temperature varying between 29.9°C (85.8°F) and 21.3°C (70.3°F).

Temperature

The onset of December marks an average high-temperature of a moderately hot 29.9°C (85.8°F), hardly differing from November's 30.5°C (86.9°F). Throughout the month of December, the average temperature in San Jose City dips to an agreeable 21.3°C (70.3°F) at night.

Heat index

During December, the heat index is evaluated at a sweltering 37°C (98.6°F). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

The average relative humidity in December is 78%.

Rainfall

In San Jose City, in December, during 14.2 rainfall days, 51mm (2.01") of precipitation is typically accumulated. In San Jose City, during the entire year, the rain falls for 242.3 days and collects up to 1503mm (59.17") of precipitation.

Daylight

With an average of 11h and 12min of daylight, December has the shortest days of the year in San Jose City, Philippines.
On the first day of December in San Jose City, sunrise is at 6:07 am and sunset at 5:22 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 5:35 pm PST.

Sunshine

January and December, with an average of 7.2h of sunshine, are months with the least sunshine in San Jose City.

UV index

January, July, August, October 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 unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 6 during December translates into the following directions:
Deter overexposure. Protecting against the sun's effects is essential. 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. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.