January weather forecast
Buenos Aires, Argentina

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The Congress Square monument in Buenos Aires, Argentina
The Congress Square monument in Buenos Aires, Argentina

Weather in January

January offers the peak of Buenos Aires' summer, inviting visitors with sunny days and blue skies. The city contends with the year's highest temperature, hoisting average high and low temperatures to 30.9°C and 20°C respectively. Abundance of sunshine totals 10.4 hours per day, making the city desirable for outdoor explorations. The average sea temperature is warm and suitable for swimming and other water activities. Winds are light to moderate, providing some relief from the summer heat.

Temperature

With an average high-temperature of 30.9°C and an average low-temperature of 20°C, January is the warmest month.

Heat index

The heat index value during January is computed to be a tropical 34°C. Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is the outcome of merging air's temperature and its humidity metrics. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.

Humidity

With an average relative humidity of 56%, January is the least humid month in Buenos Aires.

Rainfall

In Buenos Aires, in January, it is raining for 7.5 days, with typically 42mm of accumulated precipitation. In Buenos Aires, during the entire year, the rain falls for 108.2 days and collects up to 629mm of precipitation.

Sea temperature

With an average sea temperature of 25°C, January is the month with the warmest seawater in Buenos Aires, Argentina.
Note: For any water activity, temperatures between 25°C and 29°C are deemed excellent and extremely satisfying for enduring periods.

Daylight

In Buenos Aires, the average length of the day in January is 14h and 10min.
On the first day of the month, sunrise is at 05:44 and sunset at 20:09. On the last day of January, in Buenos Aires, Argentina, sunrise is at 06:12 and sunset at 20:01 -03.

Sunshine

In Buenos Aires, the average sunshine in January is 10.4h.

UV index

With an average maximum UV index of 7, January is the month with the highest UV index in Buenos Aires. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: An average maximum UV index of 7 in January leads to these recommendations:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the warmest month in Buenos Aires?

January is Buenos Aires's warmest month, registering average high temperatures of 30.9°C and lows of 20°C.

How hot is January in Buenos Aires?

The average high-temperature and low-temperature in Buenos Aires, Argentina, during January are 30.9°C and 20°C respectively. The average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in January is computed to be 34°C.

What is the least humid month in Buenos Aires?

With an average relative humidity of 56%, January is the least humid month in Buenos Aires, Argentina.

What is the average humidity in January in Buenos Aires?

In Buenos Aires, the average relative humidity in January is 56%.

How many days does it rain in January in Buenos Aires?

In Buenos Aires, Argentina, in January, during 7.5 rainfall days, 42mm of precipitation is typically accumulated.

What month is the sea warmest in Buenos Aires?

With an average sea temperature of 25°C, January is the month with the warmest seawater in Buenos Aires, Argentina.

What is the water temperature in January in Buenos Aires?

In Buenos Aires, Argentina, the average seawater temperature in January is 25°C. Water temperature between 25°C and 29°C is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Buenos Aires have in January?

In Buenos Aires, the average day length in January is 14h and 10min.

When are sunrise and sunset in January in Buenos Aires?

In January, on the first day of the month, sunrise is at 05:44 and sunset at 20:09. On the last day of the month, in Buenos Aires, sunrise is at 06:12 and sunset at 20:01 -03.

How long on average sun shines in January in Buenos Aires?

The average sunshine duration in January in Buenos Aires is 10.4h.

When is the highest UV index in Buenos Aires?

The month with the highest UV index is January, with an average maximum UV index of 7.

What is the UV index intensity in January in Buenos Aires?

In Buenos Aires, the average daily maximum UV index in January is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sea temperature
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Buenos Aires, Argentina

Average temperature in January - Buenos Aires, Argentina
  • Average high temperature in January: 30.9°C

The warmest month (with the highest average high temperature) is January (30.9°C).
The month with the lowest average high temperature is July (14°C).

  • Average low temperature in January: 20°C

The month with the highest average low temperature is January (20°C).
The coldest month (with the lowest average low temperature) is July (8.1°C).

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Average pressure in January
Buenos Aires, Argentina

Average pressure in January - Buenos Aires, Argentina
  • Average pressure in January: 1011.8mbar

The month with the highest atmospheric pressure is July (1019.2mbar).
The month with the lowest atmospheric pressure is December (1011mbar).

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Average wind speed in January
Buenos Aires, Argentina

Average wind speed in January - Buenos Aires, Argentina
  • Average wind speed in January: 13.9km/h

The windiest month (with the highest average wind speed) is September (15.8km/h).
The calmest month (with the lowest average wind speed) is March (13.2km/h).

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Average humidity in January
Buenos Aires, Argentina

Average humidity in January - Buenos Aires, Argentina
  • Average humidity in January: 56%

The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is January (56%).

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Average rainfall in January
Buenos Aires, Argentina

Average rainfall in January - Buenos Aires, Argentina
  • Average rainfall in January: 42mm

The wettest month (with the highest rainfall) is November (78mm).
The driest month (with the least rainfall) is June (38mm).

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Average rainfall days in January
Buenos Aires, Argentina

Average rainfall days in January - Buenos Aires, Argentina
  • Average rainfall days in January: 7.5 days

The month with the highest number of rainy days is October (10.8 days).
The month with the least rainy days is August (7 days).

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Average sea temperature in January
Buenos Aires, Argentina

Average sea temperature in January - Buenos Aires, Argentina
  • Average sea temperature in January: 25°C

The best month for swimming (with the highest average sea temperature) is January (25°C).
The coldest month (with the lowest average sea temperature) is July (11.9°C).

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Average daylight in January /
Average sunshine in January
Buenos Aires, Argentina

Average daylight in January / Average sunshine in January - Buenos Aires, Argentina
  • Average daylight in January: 14h and 1min

The month with the longest days is December (Average daylight: 14h and 24min).
The month with the shortest days is June (Average daylight: 9h and 54min).

  • Average sunshine in January: 10h and 2min

The month with the most sunshine is December (Average sunshine: 11h and 12min).
The month with the least sunshine is June (Average sunshine: 5h and 48min).

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Average sunshine days in January
Buenos Aires, Argentina

Average sunshine days in January - Buenos Aires, Argentina
  • Average sunshine days in January: 21.6 days

The month with the most sunshine days is January (21.6 days).
The month with the least sunshine days is October (17.4 days).

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Average UV index in January
Buenos Aires, Argentina

Average UV index in January - Buenos Aires, Argentina
  • Average UV index in January: 7

The month with the highest UV index is January (UV index 7).
The months with the lowest UV index are June and July (UV index 3).

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Average cloud cover in January
Buenos Aires, Argentina

Average cloud cover in January - Buenos Aires, Argentina
  • Average cloud cover in January: 17

The month with the most cloud cover is July (Cloud cover 37).
The month with the least cloud cover is January (Cloud cover 17).

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Average visibility in January
Buenos Aires, Argentina

Average visibility in January - Buenos Aires, Argentina
  • Average visibility in January: 10km

The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).

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Buenos Aires, Argentina

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