Buenos Aires weather in January 2026

Expect daytime maximum temperatures of 84°F in Buenos Aires, Argentina in January based on long-term weather averages. There are 9 hours of sunshine per day on average with typically 4.2 inches of rainfall in the month.

  • 84°F maximum daytime temperature in January in Buenos Aires84
    84°F max day temperature
  • 9 hours of sunshine per day
  • 8 days with some rainfall in January in Buenos Aires8
    8 days with some rainfall
  • 68°F minimum night-time temperature in January in Buenos Aires68
    68°F min night temperature
  • 14 hours of daylight per day in January in Buenos Aires14
    14 hours of daylight per day
  • Moderate heat & humidity in January in Buenos AiresM
    Moderate heat & humidity
  • 4.2 inches monthly rainfall in January in Buenos Aires4.2
    4.2 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in January in Buenos Aires11
    11+ (Extreme) UV index
  • 75°F sea temperature in January in Buenos Aires75
    75°F sea temperature

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The January weather guide for Argentina (Buenos Aires) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

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More about Buenos Aires

How hot is it in Buenos Aires in January?

Daytime temperatures usually reach 84°F in Buenos Aires in January with moderate heat and humidity, falling to 68°F at night.

How sunny is it in Buenos Aires in January?

There are normally 9 hours of bright sunshine each day in Buenos Aires in January - that's 60% of daylight hours.

How warm is the sea around Buenos Aires in January?

The average sea temperature around Buenos Aires in January is 75°F.

Does it rain in Buenos Aires in January?

There are usually 8 days with some rain in Buenos Aires in January and the average monthly rainfall is 4.2 inches.

Buenos Aires January sunrise & sunset times

Browse the sunrise and sunset times for Buenos Aires in January 2026. Select a month to view Buenos Aires sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 05:44 20:10
Friday, 16th January 2026 05:58 20:09
Saturday, 31st January 2026 06:13 20:01

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