Climate averages 1991–2020
Mar del Plata weather
in January.
A warm, moderately wet month: the warmest and the joint 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a warm month in Mar del Plata: daytime highs average 25.1°C and nights cool to about 16.7°C. By daytime temperature it is the warmest month of the year.
Expect about 77 mm of rain on roughly 8 days, which makes January a moderately wet month (the joint 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 28 min on an average January day.
The nearest other city in this atlas is Necochea (120 km away). In January its highs average 24.7°C, about as warm as Mar del Plata, with 75 mm of rain.
Among the 67 cities listed in Argentina, Mar del Plata ranks 62nd of 67 for the warmest January highs and 16th of 67 for the driest January (rainfall, lowest first). The mean January high of those 67 cities is 29.0°C; Mar del Plata is 3.9°C cooler than that mean.
From January to February, average highs fall by 0.8°C to 24.3°C, and monthly rainfall stays at 77 mm.
The annual picture
January in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Mar del Plata climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 25.1°C16.7°C | 16.7°C | 77 | 8.3 | 14.514 h |
| February | 24.3°C16.8°C | 16.8°C | 77 | 7.5 | 13.514 h |
| March | 22.5°C15.5°C | 15.5°C | 72 | 8.1 | 12.412 h |
| April | 19.0°C12.5°C | 12.5°C | 77 | 8.6 | 11.111 h |
| May | 15.7°C9.9°C | 9.9°C | 49 | 6.8 | 10.110 h |
| June | 12.9°C7.1°C | 7.1°C | 60 | 6.9 | 9.610 h |
| July | 11.8°C5.8°C | 5.8°C | 54 | 7.0 | 9.810 h |
| August | 13.5°C6.6°C | 6.6°C | 60 | 7.0 | 10.711 h |
| September | 14.7°C7.5°C | 7.5°C | 60 | 7.4 | 11.812 h |
| October | 17.3°C9.8°C | 9.8°C | 80 | 9.0 | 13.013 h |
| November | 20.5°C12.3°C | 12.3°C | 77 | 9.3 | 14.114 h |
| December | 23.7°C14.9°C | 14.9°C | 69 | 8.0 | 14.715 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- Necochea in JanuaryArgentina · 120 kmHigh 24.7°C · Low 16.8°C · 75 mm rain
- Tandil in JanuaryArgentina · 158 kmHigh 27.1°C · Low 15.3°C · 81 mm rain
- Mar del Tuyú in JanuaryArgentina · 176 kmHigh 23.5°C · Low 19.3°C · 75 mm rain
- Olavarría in JanuaryArgentina · 273 kmHigh 27.9°C · Low 16.4°C · 92 mm rain
- San Vicente in JanuaryArgentina · 340 kmHigh 28.7°C · Low 18.6°C · 89 mm rain
- La Plata in JanuaryArgentina · 344 kmHigh 27.4°C · Low 19.9°C · 92 mm rain
- Berisso in JanuaryArgentina · 349 kmHigh 27.4°C · Low 20.2°C · 79 mm rain
- Ezeiza in JanuaryArgentina · 360 kmHigh 28.8°C · Low 19.0°C · 87 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Mar del Plata) is explained once on the Mar del Plata year overview and on the Sources, method and limits page.