San Martín Weather in December

San Martín in December sees very high temperatures, with highs around 33°C (91°F) and overnight lows of 18°C (64°F). Around 56 mm (2.2 in) of rainfall is typical, so a light rain jacket is a sensible addition to your bag.

Rainfall in San Martín in December

You can typically expect 5 days of rain this month, averaging around 56 mm (2.2 in). When rain does fall this month, it tends to come down hard. The low number of rain days makes each shower more significant.

Temperature in San Martín in December

Daytime highs in San Martín in December reach 33°C (91°F), with nights around 18°C (64°F). If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. At 18°C (64°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.

Sunshine in San Martín in December

Expect sunny days throughout the month, with an estimated 302 hours of sunshine. This makes it a pleasant time to visit San Martín.

For San Martín itself, March, April, May, August, September and October generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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

San Martín Temperature in December

Min Temperature 18°C (64°F)  

Max Temperature 33°C (91°F)  

Chance of Rain 17%  

Precipitation 56 mm (2.2 in)  

Rainy days 5 days  

Humidity 47% *  

Sunshine 302 hours *  

Percentage Sunshine 64% *  

* Data from: Mendoza, Argentina (40 KM, 24 Miles).

What to Wear in San Martín in December

Hot weather in December means keeping cool is the priority. Loose-fitting clothes in natural fabrics work best. Pack plenty of shorts, tank tops, and breathable shirts. Don't forget a hat, swimwear, and comfortable sandals. Rain gear is recommended, you can expect wet weather on multiple days. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in San Martín in December

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

Swimming

10/10

Cycling

8/10

Walking

8/10

Barbeque

10/10

Camping

8/10

Outdoor sports

8/10

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 San Martín's climate page.

More climate data for San Martín

Temperature Rainfall Sunshine Humidity

See the full San Martín climate overview or explore weather in Argentina.