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
The start of December brings a subtle shift in the average high-temperature, edging up from November's warm 25.3°C (77.5°F) to a still moderately hot 29.5°C (85.1°F). Castelar registers a significant reduction from the day's heat, with an average temperature drop to an enjoyable 17.5°C (63.5°F) in December.Heat index
December's mean heat index is calculated to be a hot 32°C (89.6°F). When exposure and activity are sustained, they could induce fatigue, with a chance of heat cramps.Keep in mind the heat index values are meant for areas in shade and with light wind. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', represents the fusion of temperature and moisture in the air to suggest how warm it feels. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Humidity
The average relative humidity in December in Castelar is 58%.Rainfall
In Castelar, in December, during 6.1 rainfall days, 18mm (0.71") of precipitation is typically accumulated. In Castelar, during the entire year, the rain falls for 69.2 days and collects up to 143mm (5.63") of precipitation.Daylight
With an average of 14h and 24min of daylight, December has the longest days of the year.On the first day of December in Castelar, sunrise is at 05:34 and sunset at 19:53. On the last day of the month, sunrise is at 05:44 and sunset at 20:10 -03.
Sunshine
December has the most sunshine of the year in Castelar, with an average of 11.3h of sunshine.UV index
In December, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 6 in December interprets into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Frequently asked questions
How hot is it in Castelar in December?
What is the average humidity in December in Castelar?
How much does it rain in Castelar in December?
When are the longest days in Castelar?
What is the average length of the day in December in Castelar?
What time are sunrise and sunset in December in Castelar?
What month has the most sunshine in Castelar?
How long on average sun shines in December in Castelar?
What is the UV index intensity in December in Castelar?
Average temperature in December
Castelar, Argentina
- Average high temperature in December: 29.5°C
The warmest month (with the highest average high temperature) is January (31.3°C).
The month with the lowest average high temperature is July (13.9°C).
- Average low temperature in December: 17.5°C
The month with the highest average low temperature is January (19.4°C).
The coldest month (with the lowest average low temperature) is July (7.4°C).
Average pressure in December
Castelar, Argentina
- Average pressure in December: 1011mbar
The month with the highest atmospheric pressure is July (1019.1mbar).
The month with the lowest atmospheric pressure is December (1011mbar).
Average wind speed in December
Castelar, Argentina
- Average wind speed in December: 13.1km/h
The windiest month (with the highest average wind speed) is September (15.4km/h).
The calmest month (with the lowest average wind speed) is March (12.7km/h).
Average humidity in December
Castelar, Argentina
- Average humidity in December: 58%
The months with the highest relative humidity are May and July (76%).
The month with the lowest relative humidity is January (55%).
Average rainfall in December
Castelar, Argentina
- Average rainfall in December: 18mm
The wettest month (with the highest rainfall) is October (22mm).
The driest month (with the least rainfall) is September (5mm).
Average rainfall days in December
Castelar, Argentina
- Average rainfall days in December: 6.1 days
The months with the highest number of rainy days are April and October (6.8 days).
The month with the least rainy days is August (4.1 days).
Average daylight in December /
Average sunshine in December
Castelar, Argentina
- Average daylight in December: 14h and 2min
The month with the longest days is December (Average daylight: 14h and 24min).
The month with the shortest days is June (Average daylight: 9h and 54min).
- Average sunshine in December: 11h and 2min
The month with the most sunshine is December (Average sunshine: 11h and 18min).
The month with the least sunshine is June (Average sunshine: 5h and 54min).
Average sunshine days in December
Castelar, Argentina
- Average sunshine days in December: 22.3 days
The month with the most sunshine days is August (25.1 days).
The month with the least sunshine days is February (20.6 days).
Average UV index in December
Castelar, Argentina
- Average UV index in December: 6
The month with the highest UV index is January (UV index 7).
The months with the lowest UV index are June and July (UV index 3).
Average cloud cover in December
Castelar, Argentina
- Average cloud cover in December: 18
The month with the most cloud cover is July (Cloud cover 36).
The month with the least cloud cover is January (Cloud cover 16).
Average visibility in December
Castelar, Argentina
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).
Castelar, Argentina
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