La Rioja Weather in December
La Rioja in December sees very high daytime temperatures of 31°C (88°F) and nighttime lows of 19°C (66°F). Rainfall is fairly high this month at around 122 mm (4.8 in), so pack a rain jacket to stay dry.
Rainfall in La Rioja in December
Historically, approximately 7 days this month are expected to have rain, averaging 122 mm (4.8 in). The rain this month typically falls in concentrated bursts rather than all-day showers. Expect a few heavier spells rather than constant grey skies.
Temperature in La Rioja in December
Daytime highs in La Rioja in December reach 31°C (88°F), with nights around 19°C (66°F). If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. Nights drop to around 19°C (66°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.
Sunshine in La Rioja in December
Expect sunny days throughout the month, with an estimated 270 hours of sunshine. This makes it a pleasant time to visit La Rioja.If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit La Rioja. Our weather planner can help you explore destinations with more pleasant weather conditions.
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 La Rioja's climate page.
La Rioja Temperature in December
Min Temperature
19°C (66°F)
Max Temperature
31°C (88°F)
Chance of Rain
23%
Precipitation
122 mm (4.8 in)
Rainy days
7 days
Humidity
56%
Sunshine
270 hours
Percentage Sunshine
62%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in La Rioja typically stay consistent throughout December, with daily highs averaging around 31°C (88°F). Nights are warm, with lows typically ranging from 20°C (68°F) to 23°C (73°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 La Rioja in December
Browse day-by-day weather records for La Rioja spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
La Rioja historical weather extremes in December
According to our 49 years of weather records for La Rioja, the following extremes were recorded between 1976 and 2025.
- The warmest day in December was on December 20, 1995, with a maximum of 46°C (115°F).
- On December 1, 2005, La Rioja saw its coldest December day with temperatures maxing out at 19°C (66°F).
- Nighttime temperatures dropped to 9°C (48°F) on December 19, 1980, 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 La Rioja 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. Prepare for significant rainfall with proper waterproof clothing and shoes. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in La Rioja 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 La Rioja's climate page.
Temperature Rainfall Sunshine Humidity
See the full La Rioja climate overview or explore weather in Argentina.
