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The weather in January in San Juan

It's hot in January in San Juan with an average temperature of 33°C. Temperatures this month range from a low of 32°C to a high of 35°C. At night, you can expect temperatures between 22°C and 24°C.

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.

Average temperatures and precipitation

This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in January for San Juan, Paraguay. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.

Temperature records

With 42°C in 2022, San Juan reached the highest temperature in January over the past 10 years. The lowest daytime temperature in this month was 23°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of 15°C to a highest value of 29°C.

Rainfall amount

In January, there is an average of 219 mm of precipitation, spread over 20 days. The wind speed is around 4 Bft, mostly coming from the East.

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.

January weather comparison

  San Juan New York
Average temperature 33°C 5°C
Max. temperature 35°C 11°C
Min. temperature 22°C -5°C
Total precipitation 219 mm 97 mm
Rainy days 20 days 12 days

Start of January

The month of January starts in San Juan with hot temps, averaging around 33°C during the day and nights around 23°C.

Mid January

By mid-January, daytime temps rise to around 34°C, with nights around 24°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.

End of January

By the end of January, the average daytime temperature in San Juan is around 33°C, while nighttime temps are about 24°C. There’s a significant chance of many days with precipitation.

UV index

The UV index is a maximum of 10 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.

Check out the climate of San Juan for all months and discover the best travel time

Temperature charts

These charts show the average temperatures in January in San Juan, Paraguay. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.

Daily Temperature in January in San Juan

Temperature in January in San Juan over the years

Precipitation charts

These charts show the average amount of precipitation in January in San Juan, Paraguay. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.

Daily Precipitation in January in San Juan

Total precipitation in January in San Juan over the years

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.

Weather experiences in January in San Juan

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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.