December weather forecastDiliman, Philippines
December
Weather in December
December, the first month of the winter in Diliman, is still a warm month, with an average temperature ranging between max 29.5°C (85.1°F) and min 24.3°C (75.7°F).Temperature
December's onset records a minor alteration in the average high-temperature to a warm 29.5°C (85.1°F) from November's 30.5°C (86.9°F). Nighttime temperatures hover around an average low of 24.3°C (75.7°F) in December.Heat index
For December, the heat index is computed to be a torrid 35°C (95°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.Note that heat index values are valued for light wind and location in the shade. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', evaluates the perceived heat by adding the effect of moisture in the air. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. An increase in relative humidity disrupts body cooling by slowing the evaporation rate, thereby reducing the rate at which the body cools and amplifying the sense of heat. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.
Humidity
The average relative humidity in December in Diliman is 77%.Rainfall
In December, in Diliman, the rain falls for 7.2 days. Throughout December, 14mm (0.55") of precipitation is accumulated. In Diliman, during the entire year, the rain falls for 154.9 days and collects up to 349mm (13.74") of precipitation.Daylight
December has the shortest days of the year, with an average of 11h and 18min of daylight.On the first day of the month, sunrise is at 6:05 am and sunset at 5:24 pm. On the last day of December, sunrise is at 6:20 am and sunset at 5:37 pm PST.
Sunshine
The average sunshine in December in Diliman is 6.6h.UV index
February through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In December, the maximum UV index of 7 suggests this advice:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight 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
Diliman, Philippines
- Average high temperature in December: 29.5°C
The warmest month (with the highest average high temperature) is May (33.3°C).
The month with the lowest average high temperature is January (28.3°C).
- Average low temperature in December: 24.3°C
The month with the highest average low temperature is May (26.4°C).
The coldest month (with the lowest average low temperature) is January (22.9°C).
Average pressure in December
Diliman, Philippines
- Average pressure in December: 1011.4mbar
The month with the highest atmospheric pressure is February (1013.4mbar).
The month with the lowest atmospheric pressure is August (1007.6mbar).
Average wind speed in December
Diliman, Philippines
- Average wind speed in December: 11.2km/h
The windiest month (with the highest average wind speed) is January (11.5km/h).
The calmest month (with the lowest average wind speed) is May (7.4km/h).
Average humidity in December
Diliman, Philippines
- Average humidity in December: 77%
The month with the highest relative humidity is August (81%).
The month with the lowest relative humidity is April (70%).
Average rainfall in December
Diliman, Philippines
- Average rainfall in December: 14mm
The wettest month (with the highest rainfall) is August (70mm).
The driest month (with the least rainfall) is February (3mm).
Average rainfall days in December
Diliman, Philippines
- Average rainfall days in December: 7.2 days
The month with the highest number of rainy days is July (21 days).
The month with the least rainy days is February (3.9 days).
Average daylight in December /
Average sunshine in December
Diliman, 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 36min
The month with the most sunshine is April (Average sunshine: 11h and 18min).
The month with the least sunshine is January (Average sunshine: 6h and 12min).
Average sunshine days in December
Diliman, Philippines
- Average sunshine days in December: 15.3 days
The month with the most sunshine days is March (18 days).
The month with the least sunshine days is June (6.4 days).
Average UV index in December
Diliman, Philippines
- Average UV index in December: 7
The months with the highest UV index are February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The month with the lowest UV index is January (UV index 6).
Average cloud cover in December
Diliman, Philippines
- Average cloud cover in December: 35
The month with the most cloud cover is August (Cloud cover 51).
The month with the least cloud cover is April (Cloud cover 26).
Average visibility in December
Diliman, Philippines
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, November and December (10km).
The months with the lowest visibility are July, August, September and October (9km).








