December weather forecastOsiao, Philippines
December
Weather in December
The first month of the winter, December, is also a moderately hot month in Osiao, Philippines, with an average temperature varying between 25.2°C (77.4°F) and 27.6°C (81.7°F).Temperature
December reports an average high-temperature of a still moderately hot 27.6°C (81.7°F), slightly varied from November's 28.4°C (83.1°F). During December, the nighttime temperatures align closely with the daytime averages, measuring a still warm 25.2°C (77.4°F).Heat index
The heat index for December is estimated at a tropical 32°C (89.6°F). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.Heat index specifics point out values are for conditions of shade and a slight breeze. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Humidity
The average relative humidity in December in Osiao is 84%.Rainfall
December is the month with the most rainfall. Rain falls for 27.8 days and accumulates 370mm (14.57") of precipitation.Sea temperature
In Osiao, the average seawater temperature in December is 27.9°C (82.2°F).Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are regarded as very warm, ensuring all water activities are pleasurable for extended periods without feeling uneasy.
Daylight
With an average of 11h and 24min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 5:50 am and sunset at 5:15 pm. On the last day of December, in Osiao, sunrise is at 6:06 am and sunset at 5:28 pm PST.
Sunshine
In December, the average sunshine is 4.9h.UV index
January, February, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Osiao. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: In December, the UV index of 6 transforms into the following advice:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Alert! UV radiation becomes sharper due to reflections from sand and water.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Osiao, Philippines
- Average high temperature in December: 27.6°C
The warmest months (with the highest average high temperature) are May and June (30.3°C).
The month with the lowest average high temperature is January (26.4°C).
- Average low temperature in December: 25.2°C
The month with the highest average low temperature is June (26.3°C).
The coldest month (with the lowest average low temperature) is February (23.9°C).
Average pressure in December
Osiao, Philippines
- Average pressure in December: 1010.4mbar
The month with the highest atmospheric pressure is February (1012.8mbar).
The month with the lowest atmospheric pressure is August (1007.7mbar).
Average wind speed in December
Osiao, Philippines
- Average wind speed in December: 18.3km/h
The windiest month (with the highest average wind speed) is January (19.9km/h).
The calmest month (with the lowest average wind speed) is May (10.6km/h).
Average humidity in December
Osiao, Philippines
- Average humidity in December: 84%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are May, June and August (79%).
Average rainfall in December
Osiao, Philippines
- Average rainfall in December: 370mm
The wettest month (with the highest rainfall) is December (370mm).
The driest month (with the least rainfall) is April (61mm).
Average rainfall days in December
Osiao, Philippines
- Average rainfall days in December: 27.8 days
The month with the highest number of rainy days is January (28.4 days).
The month with the least rainy days is August (15 days).
Average sea temperature in December
Osiao, Philippines
- Average sea temperature in December: 27.9°C
The best month for swimming (with the highest average sea temperature) is June (29.8°C).
The coldest month (with the lowest average sea temperature) is February (26.8°C).
Average daylight in December /
Average sunshine in December
Osiao, Philippines
- Average daylight in December: 11h and 24min
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 24min).
- Average sunshine in December: 4h and 54min
The month with the most sunshine is May (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in December
Osiao, Philippines
- Average sunshine days in December: 1.5 days
The month with the most sunshine days is August (15.3 days).
The month with the least sunshine days is November (1 days).
Average UV index in December
Osiao, Philippines
- Average UV index in December: 6
The months with the highest UV index are March, April, May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, February, October, November and December (UV index 6).
Average cloud cover in December
Osiao, Philippines
- Average cloud cover in December: 63
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is May (Cloud cover 36).
Average visibility in December
Osiao, Philippines
- Average visibility in December: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, November and December (9km).





