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Argentina weather in January 2026
Expect daytime maximum temperatures of 29°C in Argentina in January based on long-term weather averages. There are 9 hours of sunshine per day on average with typically 107 mm of rainfall in the month.
- 29°C max day temperature
29 - 9 hours of sunshine per day
- 8 days with some rainfall
8 - 20°C min night temperature
20 - 14 hours of daylight per day
14 - Moderate heat & humidity
M - 107 mm of monthly rainfall
107 - 11+ (Extreme) UV index
11 - 24°C sea temperature
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Recommended for Argentina
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.
Top Argentina destinations
Below are average maximum temperatures at popular countries, regions and places in Argentina in January. Select a holiday destination to see more weather parameters.
All Argentina destinations
- Bahia Blanca
- Buenos Aires
- Comodoro Rivadavia
- Cordoba
- El Calafate
- Iguazu Falls
- Mar del Plata
- Mendoza
- Rosario
- Salta
- San Carlos de Bariloche
- San Miguel de Tucuman
- Ushuaia
Metric (°C / mm) | Imperial (°F / inches)
More about Argentina
How hot is it in Argentina in January?
Daytime temperatures usually reach 29°C in Buenos Aires, Argentina in January with moderate heat and humidity, falling to 20°C at night.
How sunny is it in Argentina in January?
There are normally 9 hours of bright sunshine each day in Buenos Aires, Argentina in January - that's 60% of daylight hours.
How warm is the sea around Argentina in January?
The average sea temperature around Buenos Aires, Argentina in January is 24°C.
Does it rain in Argentina in January?
There are usually 8 days with some rain in Buenos Aires, Argentina in January and the average monthly rainfall is 107mm.
Argentina January sunrise & sunset times
Browse the sunrise and sunset times for Argentina in January 2026. Select a month to view Argentina sunrise and sunset times for the next 12 months. The Argentina sunrise and sunset times shown below are for Buenos Aires.
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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