ArgentinaAverage weather for San Juan in January
It's hot in January in San Juan with an average temperature of 35°C. Temperatures this month range from a low of 33°C to a high of 37°C. At night, you can expect temperatures between 21°C and 25°C.
Start of January
The month of January starts in San Juan with hot temps, averaging around 35°C during the day and nights around 23°C. You can expect regular precipitation, but there will also be some sunny days in the early part of the month. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
Mid January
By mid-January, daytime temps stay steady at around 35°C, with nights around 23°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
End of January
By the end of January, the average daytime temperature in San Juan is around 35°C, while nighttime temps are about 23°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days. Light clothing like shorts or a dress, and a hat and sunglasses are perfect.
In January, there is an average of 117 mm of precipitation, spread over 11 days. The wind speed is around 4 Bft, mostly coming from the East.
San Juan in January |
New York | ||
|---|---|---|---|
 Average temperature |
35°C | 5°C | |
 Max. temperature |
37°C | 11°C | |
| Min. temperature |
33°C | -5°C | |
 Total precipitation |
117 mm | 97 mm | |
| Rainy days |
11 days | 12 days | |
December
UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is January a good time to visit San Juan?
Looking for sun? January isn’t a good month to be in San Juan. The temperature is nice, but there’s too much chance of rain.
Temperature records
With 44°C in 2014, San Juan reached the highest temperature in January over the past 10 years. The lowest daytime temperature in this month was 22°C in 2019. The extreme nighttime temperatures ranged from a lowest recorded value of 13°C to a highest value of 31°C.
Check out the climate of San Juan for all months and discover the best travel time
Curious about the weather in other parts of Argentina? Check out the climate and weather for spots like Buenos Aires, Patagonia, Ushuaia, or explore other destinations in Argentina.
Daily Temperature in January in San Juan
This chart shows the average daily high and low temperatures in January for San Juan, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in January in San Juan
The chart below shows the average daily precipitation in January for San Juan, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for January, you can expect about 11 days of precipitation in San Juan.
Daily UV index in January in San Juan
This chart shows the average daily UV index in January in San Juan, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in January in San Juan over the years
This chart shows the average temperature in January in San Juan, measured in degrees Celsius, over the past few years.
Total precipitation in January in San Juan over the years
This chart shows the average precipitation in January in San Juan, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in January for San Juan
Click on any day in January to get detailed info about the usual weather on that day in San Juan. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in January in San Juan
Have you been to San Juan in January?
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Average weather in San Juan by month
Click on a month below to see detailed weather info for San Juan. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
