Mar del Plata Temperature by Month
Mar del Plata in Buenos Aires Province, Argentina sees significant seasonal temperature differences, with daytime highs between 13°C (55°F) in July and 26°C (79°F) in January, averaging 19°C (66°F) annually. Explore the full monthly breakdown below.
Mar del Plata Monthly Temperatures
Visitors to Mar del Plata will encounter a climate influenced by big temperature differences across the year. Nighttime temperatures range from 16°C (61°F) in January to 6°C (43°F) in July.
The chart below illustrates the average maximum day and minimum night temperatures in Mar del Plata by month:
Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating. January, the warmest month of the year, receives 285 hours of sunshine.
The chart below shows the average temperature throughout the year:
Daily Historical Temperatures
50-year average (1976-2025)
Average high and low temperatures for each day of the month based on long-term records.
Average temperatures in June
Historical Mar del Plata Temperatures: 1976-2026
Browse day-by-day temperature records for Mar del Plata spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: Mar del Plata vs Argentina
The map below shows the annual temperature across Argentina. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Mar del Plata vs World: Temperature Compared
Mar del Plata's average annual maximum temperature is 19°C (66°F). To put that in context, here's how it compares to a few well-known destinations:
Lisbon, Portugal averages 21°C (70°F) annually — warm summers, mild winters, and rain mainly in the cooler months.
Zermatt, Switzerland averages just 4°C (39°F) annually due to its altitude, with very cold winters and cool summers even at its warmest.
Chicago, USA averages 15°C (59°F) annually — known for extreme seasonal swings, from bitterly cold winters to warm summers.
Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.
What Does the Temperature Feel Like in Mar del Plata?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In Mar del Plata, July is the coolest month, with average highs of 13°C (55°F) and humidity around 84% — considered very high. In January, the warmest month, temperatures average 26°C (79°F) with 76% humidity — conditions that feel high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Seasonal temperature shifts influence more than just how warm it feels — they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.
Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Mar del Plata this rarely lasts long on the ground.
For more on Mar del Plata's weather — including monthly rainfall, sunshine hours, and humidity — visit our Mar del Plata climate page.
