December weather forecastSan Javier, Chile
December
Weather in December
The first month of the summer, December, is also a moderately hot month in San Javier, Chile, with an average temperature ranging between max 29.1°C (84.4°F) and min 11°C (51.8°F).Temperature
The commencement of December sees a minor shift in the average high-temperature, moving from a moderately hot 25.7°C (78.3°F) in November to a still warm 29.1°C (84.4°F). In December, a remarkable difference from daytime highs is noted, as San Javier records an average temperature of 11°C (51.8°F) during the night.Heat index
December's heat index is appraised at a tropical 30°C (86°F). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.When assessing, remember that heat index measurements are for light winds and shaded spots. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for 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 is 53%.Rainfall
In San Javier, in December, it is raining for 1.6 days, with typically 6mm (0.24") of accumulated precipitation. In San Javier, during the entire year, the rain falls for 66 days and collects up to 445mm (17.52") of precipitation.Daylight
With an average of 14h and 30min of daylight, December has the longest days of the year in San Javier.On the first day of December in San Javier, sunrise is at 06:24 and sunset at 20:48. On the last day of the month, sunrise is at 06:34 and sunset at 21:05 -03.
Sunshine
In December, the average sunshine is 10.6h.UV index
January, February and December, with an average maximum UV index of 6, are months with the highest UV index in San Javier. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 6 during December leads to these advisories:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
San Javier, Chile
- Average high temperature in December: 29.1°C
The warmest month (with the highest average high temperature) is January (31.8°C).
The month with the lowest average high temperature is July (13.3°C).
- Average low temperature in December: 11°C
The month with the highest average low temperature is January (13°C).
The coldest month (with the lowest average low temperature) is July (4.8°C).
Average pressure in December
San Javier, Chile
- Average pressure in December: 1014.9mbar
The month with the highest atmospheric pressure is July (1020.1mbar).
The month with the lowest atmospheric pressure is February (1013.9mbar).
Average wind speed in December
San Javier, Chile
- Average wind speed in December: 9.5km/h
The windiest month (with the highest average wind speed) is January (9.6km/h).
The calmest month (with the lowest average wind speed) is May (6.9km/h).
Average humidity in December
San Javier, Chile
- Average humidity in December: 53%
The month with the highest relative humidity is July (79%).
The month with the lowest relative humidity is January (50%).
Average rainfall in December
San Javier, Chile
- Average rainfall in December: 6mm
The wettest month (with the highest rainfall) is June (117mm).
The driest months (with the least rainfall) are January and February (2mm).
Average rainfall days in December
San Javier, Chile
- Average rainfall days in December: 1.6 days
The month with the highest number of rainy days is July (10.6 days).
The month with the least rainy days is February (1.1 days).
Average daylight in December /
Average sunshine in December
San Javier, Chile
- Average daylight in December: 14h and 30min
The month with the longest days is December (Average daylight: 14h and 30min).
The month with the shortest days is June (Average daylight: 9h and 48min).
- Average sunshine in December: 10h and 36min
The month with the most sunshine is January (Average sunshine: 11h and 30min).
The month with the least sunshine is June (Average sunshine: 7h and 30min).
Average sunshine days in December
San Javier, Chile
- Average sunshine days in December: 29.1 days
The month with the most sunshine days is March (29.3 days).
The month with the least sunshine days is June (18.8 days).
Average UV index in December
San Javier, Chile
- Average UV index in December: 6
The months with the highest UV index are January, February and December (UV index 6).
The months with the lowest UV index are June and July (UV index 3).
Average cloud cover in December
San Javier, Chile
- Average cloud cover in December: 10
The months with the most cloud cover are June and August (Cloud cover 36).
The months with the least cloud cover are January and February (Cloud cover 7).
Average visibility in December
San Javier, Chile
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April and December (10km).
The months with the lowest visibility are May, June, July, August, September, October and November (9km).
