December weather forecastSan Rafael, Philippines
December
Weather in December
The first month of the winter, December, is still a warm month in San Rafael, Philippines, with an average temperature ranging between max 29.7°C (85.5°F) and min 24.5°C (76.1°F).Temperature
With December's arrival, San Rafael, Philippines, notes an average high-temperature of a moderately hot 29.7°C (85.5°F), closely following the trend of the preceding month. Throughout December, San Rafael encounters an average temperature drop to 24.5°C (76.1°F).Heat index
December's mean heat index is estimated at a torrid 36°C (96.8°F). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.Data suggests that the heat index is set for environments in shade and with a light wind. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.
Humidity
In December, the average relative humidity is 76%.Rainfall
In San Rafael, in December, during 10.9 rainfall days, 51mm (2.01") of precipitation is typically accumulated. Throughout the year, there are 210.3 rainfall days, and 1382mm (54.41") 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 the month, sunrise is at 6:06 am and sunset at 5:24 pm. On the last day of December, in San Rafael, sunrise is at 6:21 am and sunset at 5:36 pm PST.
Sunshine
In San Rafael, the average sunshine in December is 6.5h.UV index
The months with the highest UV index in San Rafael are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.Note: In December, the maximum UV index of 7 suggests these recommendations:
Shun overexposure. Protection from sun ravages is indispensable. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
San Rafael, Philippines
- Average high temperature in December: 29.7°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 (28.4°C).
- Average low temperature in December: 24.5°C
The month with the highest average low temperature is May (26.6°C).
The coldest months (with the lowest average low temperature) are January and February (23.4°C).
Average pressure in December
San Rafael, Philippines
- Average pressure in December: 1011.3mbar
The month with the highest atmospheric pressure is February (1013.3mbar).
The month with the lowest atmospheric pressure is August (1007.6mbar).
Average wind speed in December
San Rafael, Philippines
- Average wind speed in December: 12.1km/h
The windiest month (with the highest average wind speed) is January (12.4km/h).
The calmest month (with the lowest average wind speed) is May (8.2km/h).
Average humidity in December
San Rafael, Philippines
- Average humidity in December: 76%
The month with the highest relative humidity is August (80%).
The month with the lowest relative humidity is April (70%).
Average rainfall in December
San Rafael, Philippines
- Average rainfall in December: 51mm
The wettest month (with the highest rainfall) is July (295mm).
The driest month (with the least rainfall) is February (12mm).
Average rainfall days in December
San Rafael, Philippines
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is July (28.9 days).
The month with the least rainy days is February (6.9 days).
Average daylight in December /
Average sunshine in December
San Rafael, 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 30min
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
San Rafael, Philippines
- Average sunshine days in December: 16.3 days
The month with the most sunshine days is March (18.8 days).
The month with the least sunshine days is July (1.5 days).
Average UV index in December
San Rafael, Philippines
- Average UV index in December: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in December
San Rafael, Philippines
- Average cloud cover in December: 36
The month with the most cloud cover is August (Cloud cover 52).
The month with the least cloud cover is April (Cloud cover 25).
Average visibility in December
San Rafael, Philippines
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, October, November and December (10km).
The months with the lowest visibility are July, August and September (9km).
