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

More about Buenos Aires

Buenos Aires by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Argentina

Avalon Waterways: Current offers on 2025 river cruises

  • Save on river cruises in 2025 with Avalon Waterways
  • Book river cruises in Europe, Asia, Africa & Americas
  • Filter deals by promotion, month, destination & more
Go to Avalon Waterways deal >>

Expires at 23:59 on Wednesday 31st Dec 2025 · View all Avalon Waterways offers

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)

Back to top

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

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^