December weather forecastSan Mateo, Philippines
December
Weather in December
The first month of the winter, December, is also a moderately hot month in San Mateo, Philippines, with an average temperature ranging between max 28.2°C (82.8°F) and min 23.2°C (73.8°F).Temperature
A minor adjustment in San Mateo's average high-temperature is noted with the start of December, touching a still warm 28.2°C (82.8°F) from November's 29.2°C (84.6°F). December's average low temperature is a still moderately hot 23.2°C (73.8°F), displaying a subtle drop from its daily peak.Heat index
The heat index value during December is appraised at a tropical 33°C (91.4°F). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.For clarity, heat index numbers account for light winds and areas under shade. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', takes into account both air temperature and humidity to illustrate what people actually feel. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
Humidity
The average relative humidity in December is 81%.Rainfall
In December, the rain falls for 19.4 days. Throughout December, 82mm (3.23") of precipitation is accumulated. Throughout the year, there are 250.5 rainfall days, and 1347mm (53.03") of precipitation is accumulated.Daylight
December has the shortest days of the year, with an average of 11h and 18min of daylight.On the first day of December, sunrise is at 6:04 am and sunset at 5:24 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 5:36 pm PST.
Sunshine
In December, the average sunshine in San Mateo is 6h.UV index
January, November and December, with an average maximum UV index of 6, are months with the lowest UV index in San Mateo. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In December, a regular UV index of 6 translates into these guidelines:
Fend off overexposure. Sun protection is vital. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
San Mateo, Philippines
- Average high temperature in December: 28.2°C
The warmest month (with the highest average high temperature) is May (32.2°C).
The month with the lowest average high temperature is January (26.9°C).
- Average low temperature in December: 23.2°C
The month with the highest average low temperature is May (25°C).
The coldest month (with the lowest average low temperature) is February (21.8°C).
Average pressure in December
San Mateo, Philippines
- Average pressure in December: 1011.5mbar
The month with the highest atmospheric pressure is February (1013.5mbar).
The month with the lowest atmospheric pressure is August (1007.6mbar).
Average wind speed in December
San Mateo, Philippines
- Average wind speed in December: 10.7km/h
The windiest month (with the highest average wind speed) is January (11.1km/h).
The calmest month (with the lowest average wind speed) is May (6.2km/h).
Average humidity in December
San Mateo, Philippines
- Average humidity in December: 81%
The months with the highest relative humidity are July, August and September (83%).
The month with the lowest relative humidity is April (75%).
Average rainfall in December
San Mateo, Philippines
- Average rainfall in December: 82mm
The wettest month (with the highest rainfall) is July (217mm).
The driest month (with the least rainfall) is February (22mm).
Average rainfall days in December
San Mateo, Philippines
- Average rainfall days in December: 19.4 days
The month with the highest number of rainy days is July (27.7 days).
The month with the least rainy days is February (13.4 days).
Average daylight in December /
Average sunshine in December
San Mateo, Philippines
- Average daylight in December: 11h and 18min
The month with the longest days is June (Average daylight: 13h and 0min).
The month with the shortest days is December (Average daylight: 11h and 18min).
- Average sunshine in December: 6h and 0min
The month with the most sunshine is April (Average sunshine: 11h and 12min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days in December
San Mateo, Philippines
- Average sunshine days in December: 5.5 days
The month with the most sunshine days is April (10.4 days).
The month with the least sunshine days is July (2.8 days).
Average UV index in December
San Mateo, Philippines
- Average UV index in December: 6
The months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, November and December (UV index 6).
Average cloud cover in December
San Mateo, Philippines
- Average cloud cover in December: 42
The month with the most cloud cover is August (Cloud cover 50).
The month with the least cloud cover is April (Cloud cover 27).
Average visibility in December
San Mateo, Philippines
- Average visibility in December: 10km
The months with the highest visibility are March and December (10km).
The months with the lowest visibility are January, February, April, May, June, July, August, September, October and November (9km).
