December weather forecastSanto Tomas, Philippines

December

Weather in December

The first month of the winter, December, is still a warm month in Santo Tomas, Philippines, with an average temperature varying between 22.8°C (73°F) and 27.2°C (81°F).

Temperature

Santo Tomas marks the arrival of December with an average high-temperature of a still warm 27.2°C (81°F), hardly different from November's 28.4°C (83.1°F). Santo Tomas experiences a minimal drop from daytime high temperatures, recording an average low-temperature of 22.8°C (73°F) throughout December.

Heat index

The heat index for December is appraised at a tropical 31°C (87.8°F). Enduring exposure and ongoing activity could cause a sense of fatigue and subsequent heat cramps.
In terms of the heat index, values are set with light wind and shade conditions in mind. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.

Humidity

The months with the highest humidity are July, September, October and December, with an average relative humidity of 87%.

Rainfall

In Santo Tomas, in December, during 27.1 rainfall days, 153mm (6.02") of precipitation is typically accumulated. Throughout the year, in Santo Tomas, there are 300.8 rainfall days, and 1601mm (63.03") of precipitation is accumulated.

Daylight

With an average of 11h and 18min of daylight, December has the shortest days of the year in Santo Tomas.
On the first day of December, sunrise is at 6:03 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

In Santo Tomas, the average sunshine in December is 3.7h.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum UV index of 5 in December translates into the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.

Updated: Feb 6, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In December, the average high-temperature and low-temperature in Santo Tomas, Philippines, are 27.2°C (81°F) and 22.8°C (73°F) respectively. In December, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, is appraised at 31°C (87.8°F).

The months with the highest humidity in Santo Tomas are July, September, October and December, with an average relative humidity of 87%.

In December, the average relative humidity is 87%.

In Santo Tomas, Philippines, in December, it is raining for 27.1 days, with typically 153mm (6.02") of accumulated precipitation.

The month with the shortest days in Santo Tomas, Philippines, is December, with an average of 11h and 18min of daylight.

The average day length in December in Santo Tomas, Philippines, is 11h and 19min.

On the first day of December, sunrise is at 6:03 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.

The average sunshine duration in December in Santo Tomas, Philippines, is 3.7h.

December is the month with the lowest UV index in Santo Tomas, Philippines, with an average maximum UV index of 5.

In Santo Tomas, the average daily maximum UV index in December is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

28.4°C

27.2°C

26.2°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

11.4km/h

12.8km/h

13.3km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

1.9

2.2

1.6

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Santo Tomas, Philippines

Average high temperature in December: 27.2°C

The warmest month (with the highest average high temperature) is May (31.1°C).
The month with the lowest average high temperature is January (26.2°C).

Average low temperature in December: 22.8°C

The months with the highest average low temperature are May and June (23.8°C).
The coldest month (with the lowest average low temperature) is February (21.8°C).

Average pressure in December
Santo Tomas, Philippines

Average pressure in December: 1011.1mbar

The month with the highest atmospheric pressure is February (1013.2mbar).
The month with the lowest atmospheric pressure is August (1007.7mbar).

Average wind speed in December
Santo Tomas, Philippines

Average wind speed in December: 12.1km/h

The windiest month (with the highest average wind speed) is January (12.7km/h).
The calmest month (with the lowest average wind speed) is June (6.3km/h).

Average humidity in December
Santo Tomas, Philippines

Average humidity in December: 87%

The months with the highest relative humidity are July, September, October and December (87%).
The month with the lowest relative humidity is April (79%).

Average rainfall in December
Santo Tomas, Philippines

Average rainfall in December: 153mm

The wettest month (with the highest rainfall) is July (237mm).
The driest months (with the least rainfall) are February and March (44mm).

Average rainfall days in December
Santo Tomas, Philippines

Average rainfall days in December: 27.1 days

The month with the highest number of rainy days is July (29.2 days).
The month with the least rainy days is April (20.3 days).

Average daylight in December /
Average sunshine in December
Santo Tomas, Philippines

Average daylight in December: 11h and 18min

The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 18min).

Average sunshine in December: 3h and 42min

The month with the most sunshine is May (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

Average sunshine days in December
Santo Tomas, Philippines

Average sunshine days in December: 2.2 days

The month with the most sunshine days is April (6.8 days).
The months with the least sunshine days are January and July (1.6 days).

Average UV index in December
Santo Tomas, Philippines

Average UV index in December: 5

The months with the highest UV index are March, April, May, June, August and September (UV index 7).
The month with the lowest UV index is December (UV index 5).

Average cloud cover in December
Santo Tomas, Philippines

Average cloud cover in December: 69

The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is May (Cloud cover 41).

Average visibility in December
Santo Tomas, Philippines

Average visibility in December: 9km

The months with the highest visibility are January, February, March, April, November and December (9km).
The months with the lowest visibility are July and September (7km).