December weather forecastSienna, Philippines
December
Weather in December
December, the first month of the winter in Sienna, is also a moderately hot month, with temperature in the range of an average high of 29.5°C (85.1°F) and an average low of 24.3°C (75.7°F).Temperature
The average high-temperature during December is a warm 29.5°C (85.1°F), almost matching the conditions of the preceding month. In Sienna, December nights cool down to an average of 24.3°C (75.7°F).Heat index
During December, the heat index is appraised at a fiery hot 35°C (95°F). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.Heat index readings emphasize conditions of light breezes and shaded spots. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', combines both the air temperature and the humidity level to give a perceived human temperature. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.
Humidity
In Sienna, the average relative humidity in December is 77%.Rainfall
In December, the rain falls for 11.5 days. Throughout December, 45mm (1.77") of precipitation is accumulated. In Sienna, during the entire year, the rain falls for 185 days and collects up to 830mm (32.68") 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 December, sunrise is at 6:05 am and sunset at 5:24 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 5:37 pm PST.
Sunshine
In Sienna, the average sunshine in December is 6.6h.UV index
The months with the highest UV index are February through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 7 translates into these guidelines:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sienna, Philippines
- Average high temperature in December: 29.5°C
The warmest month (with the highest average high temperature) is May (33.4°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
Sienna, 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
Sienna, Philippines
- Average wind speed in December: 11.1km/h
The windiest month (with the highest average wind speed) is January (11.4km/h).
The calmest month (with the lowest average wind speed) is May (7.5km/h).
Average humidity in December
Sienna, Philippines
- Average humidity in December: 77%
The months with the highest relative humidity are August and September (81%).
The month with the lowest relative humidity is April (70%).
Average rainfall in December
Sienna, Philippines
- Average rainfall in December: 45mm
The wettest month (with the highest rainfall) is July (163mm).
The driest month (with the least rainfall) is February (11mm).
Average rainfall days in December
Sienna, Philippines
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is July (23.4 days).
The month with the least rainy days is February (7 days).
Average daylight in December /
Average sunshine in December
Sienna, 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
Sienna, Philippines
- Average sunshine days in December: 14.4 days
The month with the most sunshine days is March (16.9 days).
The month with the least sunshine days is July (7 days).
Average UV index in December
Sienna, 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
Sienna, 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 25).
Average visibility in December
Sienna, Philippines
- Average visibility in December: 10km
The months with the highest visibility are February, March, April, May, June and December (10km).
The months with the lowest visibility are January, July, August, September, October and November (9km).
