Las Grutas Weather in December
December in Las Grutas brings high temperatures, with highs of 28°C (82°F) and nights dropping to 16°C (61°F). It's also the driest month of the year, ideal for those who want to avoid rain.
Rainfall in Las Grutas in December
Conditions tend to be dry and settled, making it a good month for outdoor plans. Typically around 4 days of rainfall are expected, averaging 17 mm (0.7 in) for the month. The occasional light shower is possible, but rain is rarely an issue this month.
Temperature in Las Grutas in December
Las Grutas has perfect weather in December, with days reaching 28°C (82°F) and nights cooling to 16°C (61°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. At 16°C (61°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Wind Speed in Las Grutas in December
December has wind speeds averaging 5 m/s (10 knots). You can expect gentle to moderate winds that move small trees and make flags wave steadily on typical days. Conditions typically range from light breezes to moderate winds.
Average water temperature in December
At 16°C (61°F), the water is cool but manageable for those who don't mind a bit of a shock getting in. Most people adjust after a few minutes.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Argentina, check out our Las Grutas's climate page.
Las Grutas Temperature in December
Min Temperature
16°C (61°F)
Max Temperature
28°C (82°F)
Water Temperature
16°C (61°F) *
Chance of Rain
13%
Precipitation
17 mm (0.7 in)
Rainy days
4 days
Humidity
49% *
Windspeed
5 m/s (10 knots) *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Las Grutas typically stay consistent throughout December, with daily highs averaging around 28°C (82°F). Nights are pleasant, with lows typically ranging from 15°C (59°F) to 19°C (66°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Las Grutas in December
Browse day-by-day weather records for Las Grutas spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Las Grutas historical weather extremes in December
The extremes listed below come from historical weather data collected in Las Grutas from 1984 through 2025.
- The warmest day in December was on December 25, 1995, with a maximum of 40°C (104°F).
- The coldest December day was on December 12, 1984, with a maximum of 14°C (57°F).
- Nighttime temperatures dropped to 5°C (41°F) on December 1, 2019, marking the coldest December night on record.
Best Places in Argentina in December
Find out more about the weather in Argentina and which places have the best travel conditions in this month. See all of Argentina in December →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Las Grutas in December
Warm temperatures in December make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. With minimal rainfall expected, you can leave the rain gear at home. With water temperatures around 16°C (61°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough.What To Do in Las Grutas in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Argentina, check out our Las Grutas's climate page.
Temperature Rainfall Humidity Wind Speed Water Temp
See the full Las Grutas climate overview or explore weather in Argentina.
