San Juan weather in January (San Juan Province, Argentina)

Planning a trip to San Juan in January? Check out this comprehensive weather guide.

In January, San Juan generally has very high temperatures and moderate rainfall. January falls within the summer season. Throughout the daytime, temperatures often hover around 33°C. However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 19°C. Often, it stands out as the year's warmest month. With this in mind, cool breathable fabrics will make navigating the heat much more bearable. Always be ready to embrace the warmth while staying cool and protected.

San Juan in January usually receives moderate rainfall, averaging around 37 mm for the month. Rain is expected on roughly 5 days.

With around 338 hours of sunshine, the days are mostly sunny. It gives a pleasant and vibrant feel to the area.

If you're looking for dry conditions and comfortable temperatures, January may not be the ideal month to visit San Juan. March, April, May, June, July, August, September and October generally stand out with the best circumstances. While January, February, November and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized San Juan climate page with graphs.

 

San Juan, monthly averages in January

Min TemperatureMin Temperature 19°C  
Max TemperatureMax Temperature 33°C  
Chance of RainChance of Rain 16%  
PrecipitationPrecipitation 37 mm  
Rainy daysRainy days 5 days  
HumidityHumidity 44%  
SunshineSunshine 338 hours  
Percentage SunshinePercentage Sunshine 78%  

Where to go in Argentina in January

Find out more about the weather in Argentina in January and which places have the best weather conditions in this month.

Map not visible? Whoops sorry! Please refresh the page.
Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in San Juan in January?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool.

What To Do

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

Swimming
10/10
Cycling
8/10
Walking
8/10
Barbeque
10/10
Camping
10/10
Outdoor sports
8/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in San Juan.

Our site offers climate and forecast data for every country in the world. Are you going to Argentina? On this website you can find historical weather averages for many cities in Argentina. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.