December
Weather in December
December in Santa Rosa signals the commencement of the summer season. The winter chills are left behind as temperatures start to soar, warming up the city with summer's radiance. Rainfall levels retain a high record, identical to November, amounting to 94mm (3.7") spread over 9 days. Abundant sunshine, lasting 9.8 hours per day, combined with the longest daylight duration of the year, spanning 14.6 hours, makes December one of the most favorable months for outdoor excursions.
Heat index values are typically calculated for conditions of shade and a light breeze. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', takes into account both air temperature and humidity to illustrate what people actually feel. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
On the first day of the month, sunrise is at 05:51 and sunset at 20:20. On the last day of December, sunrise is at 06:01 and sunset at 20:38 -03.
Temperature
December's arrival in Santa Rosa brings a slight change in high-temperatures, adjusting from a moderately hot 26.6°C (79.9°F) in November to a still warm 29.9°C (85.8°F). Santa Rosa sees a consistent average low-temperature of 14.5°C (58.1°F) in December, indicating a substantial decrease from the day's temperature.Heat index
For most parts of December, the heat index is calculated to be a tropical 32°C (89.6°F). Extended exposure and activity might lead to tiredness, potentially resulting in heat cramps.Heat index values are typically calculated for conditions of shade and a light breeze. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', takes into account both air temperature and humidity to illustrate what people actually feel. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humidity
The months with the lowest humidity in Santa Rosa are January and December, with an average relative humidity of 58%.Rainfall
In Santa Rosa, in December, during 9 rainfall days, 94mm (3.7") of precipitation is typically accumulated. In Santa Rosa, during the entire year, the rain falls for 75 days and collects up to 686mm (27.01") of precipitation.Daylight
The month with the longest days in Santa Rosa is December, with an average of 14h and 36min of daylight.On the first day of the month, sunrise is at 05:51 and sunset at 20:20. On the last day of December, sunrise is at 06:01 and sunset at 20:38 -03.
Sunshine
The average sunshine in December in Santa Rosa is 9.8h.Updated: Jan 25, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Santa Rosa in December?
An average high-temperature, in December, in Santa Rosa, is 29.9°C (85.8°F) and the average low-temperature is 14.5°C (58.1°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, in December is calculated to be 32°C (89.6°F).
What is the least humid month in Santa Rosa?
The months with the lowest humidity are January and December, with an average relative humidity of 58%.
What is the average humidity in December in Santa Rosa?
In Santa Rosa, the average relative humidity in December is 58%.
How much does it rain in Santa Rosa in December?
In Santa Rosa, Argentina, in December, it is raining for 9 days, with typically 94mm (3.7") of accumulated precipitation.
When are the longest days in Santa Rosa?
With an average of 14h and 36min of daylight, December has the longest days of the year.
What is the average length of the day in December in Santa Rosa?
The average day length in December in Santa Rosa is 14h and 37min.
When are sunrise and sunset in December in Santa Rosa?
In December, on the first day of the month, sunrise is at 05:51 and sunset at 20:20. On the last day of the month, sunrise is at 06:01 and sunset at 20:38 -03.
How many hours of sunshine does Santa Rosa have in December?
In December, the average sunshine duration is 9.8h.
Average temperature in December
Santa Rosa, Argentina
- Average high temperature in December: 29.9°C
The warmest month (with the highest average high temperature) is January (31.4°C).
The months with the lowest average high temperature are June and July (14.7°C).
- Average low temperature in December: 14.5°C
The month with the highest average low temperature is January (15.5°C).
The coldest month (with the lowest average low temperature) is July (1.9°C).
Average humidity in December
Santa Rosa, Argentina
- Average humidity in December: 58%
The month with the highest relative humidity is June (79%).
The months with the lowest relative humidity are January and December (58%).
Average rainfall in December
Santa Rosa, Argentina
- Average rainfall in December: 93.5mm
The wettest month (with the highest rainfall) is November (101mm).
The driest month (with the least rainfall) is June (16.3mm).
Average rainfall days in December
Santa Rosa, Argentina
- Average rainfall days in December: 9 days
The months with the highest number of rainy days are October and December (9 days).
The month with the least rainy days is August (3 days).
Average daylight in December /
Average sunshine in December
Santa Rosa, Argentina
- Average daylight in December: 14h and 4min
The month with the longest days is December (Average daylight: 14h and 36min).
The month with the shortest days is June (Average daylight: 9h and 42min).
- Average sunshine in December: 9h and 5min
The month with the most sunshine is January (Average sunshine: 10h and 18min).
The month with the least sunshine is June (Average sunshine: 4h and 24min).
