Arroyo Seco Weather in December

December in Arroyo Seco averages 30°C (86°F) during the day and 18°C (64°F) at night. Quite a bit of rainfall is typical this month, with around 109 mm (4.3 in) on average. An umbrella is a good idea.

Rainfall in Arroyo Seco in December

Typically, you can expect about 9 days of rain this month, with 109 mm (4.3 in) on average. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Arroyo Seco in December

Daytime highs in Arroyo Seco in December reach 30°C (86°F), with nights around 18°C (64°F). Sunshine and humidity can make it feel even warmer than the raw temperature suggests. Nights drop to around 18°C (64°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 Arroyo Seco in December

The month enjoys around 279 hours of sunshine, creating mostly sunny days with good weather conditions.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Arroyo Seco. Our weather planner can help you explore destinations with more pleasant weather conditions.

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• January
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For a detailed overview over the year and the best time to visit Argentina, check out our Arroyo Seco's climate page.

Arroyo Seco Temperature in December

Min Temperature 18°C (64°F)  

Max Temperature 30°C (86°F)  

Chance of Rain 28%  

Precipitation 109 mm (4.3 in)  

Rainy days 9 days  

Humidity 68% *  

Sunshine 279 hours *  

Percentage Sunshine 64% *  

* Data from: Rosario, Argentina (36 KM, 22 Miles).

What to Wear in Arroyo Seco 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. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Arroyo Seco in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Argentina, check out our Arroyo Seco's climate page.

More climate data for Arroyo Seco

Temperature Rainfall Sunshine Humidity

See the full Arroyo Seco climate overview or explore weather in Argentina.