Mar del Plata weather in January
Temperature, sea and sunshine in January: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in January
Excellent
Best time to visit: October – April
What is the weather like in Mar del Plata in January?
In January, Mar del Plata is warm: daytime highs average 25 °C, and nights cool down to about 17 °C. The sea averages 19.9 °C – bracing, so a wetsuit helps for longer swims. Expect around 6 hours of sunshine a day. Rain falls on about 8 days, adding up to 76 mm. All in all, January is an excellent month for a holiday in Mar del Plata.
January compared
How the weather changes from December to February. Tap a month to open it.
| DecemberDec | JanuaryJan | FebruaryFeb | |
|---|---|---|---|
| Score | 80 | 82 | 84 |
| Day | 24° | 25° | 24° |
| Night | 15° | 17° | 17° |
| Sea | 18° | 20° | 21° |
| Sun | 6 h | 6 h | 7 h |
| Rain days | 8 | 8 | 8 |
More details for January
- Daylight
- 14 h 31 min05:43 – 20:14
- UV index
- 10 · very highclear sky, noon (estimate)All months
- Muggy days
- 6 daysdew point 18 °C or moreAll months
- Wind
- 25 km/haverage daily peakAll months
- Cloud cover
- 42 %on averageAll months
- Hot days
- 4 days30 °C or moreAll months
- Time zone
- UTC−3America/Argentina/Buenos_Aires
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %55 %
- Few rainy daysweight 30 %71 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in January
- Wetsuit for longer swims
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Rain jacket or umbrella
Mar del Plata in January: quick answers
Is Mar del Plata hot in January?
Warm rather than hot: in January, daytime highs in Mar del Plata average 25 °C and nights cool to about 17 °C. On about 4 days the thermometer climbs to 30 °C or more.
Can you swim in Mar del Plata in January?
Only if you don't mind cold water: in January the sea averages just 19.9 °C. Comfortable swimming is possible from February to March.
Does it rain much in Mar del Plata in January?
Rain falls on about 8 days, adding up to 76 mm.
Mar del Plata month by month
The whole year in Mar del PlataAll destinations: ArgentinaWhere to go in JanuarySea temperature in January
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences