December weather forecastOlavarría, Argentina
December
Weather in December
December, the first month of the summer in Olavarría, is also a moderately hot month, with temperature in the range of an average low of 13.5°C (56.3°F) and an average high of 28.8°C (83.8°F).Temperature
Olavarría's weather in December shows a minor rise in the average high-temperature, moving slightly up from November's 24°C (75.2°F) to a still warm 28.8°C (83.8°F). December nights in Olavarría indicate a noticeable temperature drop from the daytime highs, with an average reading lowering to a moderate 13.5°C (56.3°F).Heat index
In December, the heat index is calculated to be a tropical 30°C (86°F). Continued exposure and engagement in activity might trigger tiredness and subsequently heat cramps.Understanding the heat index involves considering values for shaded locales with light wind. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', combines both the air temperature and the humidity level to give a perceived human temperature. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
Humidity
In December, the average relative humidity in Olavarría is 54%.Rainfall
In December, the rain falls for 8.8 days. Throughout December, 41mm (1.61") of precipitation is accumulated. Throughout the year, in Olavarría, there are 97.5 rainfall days, and 450mm (17.72") of precipitation is accumulated.Snowfall
January through June, September through December are months without snowfall.Daylight
December has the longest days of the year in Olavarría, with an average of 14h and 36min of daylight.On the first day of December in Olavarría, sunrise is at 05:35 and sunset at 20:05. On the last day of the month, sunrise is at 05:45 and sunset at 20:23 -03.
Sunshine
The month with the most sunshine in Olavarría, Argentina, is December, with an average of 11.2h of sunshine.UV index
The months with the highest UV index are January, February and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.Note: In December, a regular UV index of 6 translates into these guidelines:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Olavarría, Argentina
- Average high temperature in December: 28.8°C
The warmest month (with the highest average high temperature) is January (30.8°C).
The month with the lowest average high temperature is July (11.8°C).
- Average low temperature in December: 13.5°C
The month with the highest average low temperature is January (15.2°C).
The coldest month (with the lowest average low temperature) is July (4°C).
Average pressure in December
Olavarría, Argentina
- Average pressure in December: 1010.7mbar
The month with the highest atmospheric pressure is July (1018.8mbar).
The month with the lowest atmospheric pressure is December (1010.7mbar).
Average wind speed in December
Olavarría, Argentina
- Average wind speed in December: 15.5km/h
The windiest month (with the highest average wind speed) is September (15.7km/h).
The calmest month (with the lowest average wind speed) is May (13.6km/h).
Average humidity in December
Olavarría, Argentina
- Average humidity in December: 54%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is January (51%).
Average rainfall in December
Olavarría, Argentina
- Average rainfall in December: 41mm
The wettest month (with the highest rainfall) is November (64mm).
The driest month (with the least rainfall) is August (21mm).
Average rainfall days in December
Olavarría, Argentina
- Average rainfall days in December: 8.8 days
The month with the highest number of rainy days is October (11.5 days).
The month with the least rainy days is August (5.3 days).
Average snowfall days in December
Olavarría, Argentina
- Average snowfall days in December: 0 days
The months with the highest number of snowfall days are July and August (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Olavarría, Argentina
- Average daylight in December: 14h and 36min
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: 11h and 12min
The month with the most sunshine is December (Average sunshine: 11h and 12min).
The month with the least sunshine is June (Average sunshine: 6h and 0min).
Average sunshine days in December
Olavarría, Argentina
- Average sunshine days in December: 20.5 days
The month with the most sunshine days is August (24.2 days).
The month with the least sunshine days is October (16.9 days).
Average UV index in December
Olavarría, Argentina
- Average UV index in December: 6
The months with the highest UV index are January, February and December (UV index 6).
The month with the lowest UV index is July (UV index 2).
Average cloud cover in December
Olavarría, Argentina
- Average cloud cover in December: 18
The months with the most cloud cover are May and July (Cloud cover 37).
The month with the least cloud cover is January (Cloud cover 17).
Average visibility in December
Olavarría, Argentina
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, June and December (10km).
The months with the lowest visibility are May, July, August, September, October and November (9km).





