Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
In San Rafael, the average high-temperature in December slightly increases from a moderately hot 25.7°C (78.3°F) in November to a still warm 29.1°C (84.4°F). In San Rafael, following the steep rise of daytime temperatures, an average nighttime low of 11°C (51.8°F) is anticipated during December.Heat index
For most parts of December, the heat index is evaluated at a hot 30°C (86°F). Long-standing exposure and activity could induce a feeling of tiredness and lead to heat cramps.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', represents the fusion of temperature and moisture in the air to suggest how warm it feels. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Humidity
In San Rafael, the average relative humidity in December is 53%.Rainfall
In December, in San Rafael, the rain falls for 1.6 days. Throughout December, 6mm (0.24") of precipitation is accumulated. In San Rafael, during the entire year, the rain falls for 66 days and collects up to 445mm (17.52") of precipitation.Daylight
December has the longest days of the year, with an average of 14h and 30min of daylight.On the first day of the month, sunrise is at 06:24 and sunset at 20:46. On the last day of December, in San Rafael, sunrise is at 06:34 and sunset at 21:04 -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 Rafael. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A typical high UV index of 6 in December suggests the following recommendations:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Frequently asked questions
How hot is it in San Rafael in December?
What is the average humidity in December in San Rafael?
How many days does it rain in December in San Rafael?
When are the longest days in San Rafael?
What is the average length of the day in December in San Rafael?
When is the sunrise / sunset in December in San Rafael?
How many hours of sunshine does San Rafael have in December?
What is the month with the highest UV index in San Rafael?
What is the UV index intensity in December in San Rafael?
Average temperature in December
San Rafael, 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 Rafael, 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 Rafael, 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 Rafael, 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 Rafael, 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 Rafael, 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 Rafael, Chile
- Average daylight in December: 14h and 3min
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 4min
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 Rafael, 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 Rafael, 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 Rafael, 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 Rafael, 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).
San Rafael, Chile
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