Mar del Plata weather by month
Mar del Plata runs from about 7°C in July to 22°C in January, with February the wettest month at 112 mm.
warmest month
January
22°C
coolest month
July
7°C
wettest month
February
112 mm
worst air month
January
7 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 22°C | 21 mm | 414 h | 7 |
| February | 21°C | 112 mm | 308 h | 5 |
| March | 19°C | 72 mm | 315 h | 5 |
| April | 16°C | 83 mm | 223 h | 4 |
| May | 10°C | 23 mm | 212 h | 6 |
| June | 11°C | 82 mm | 186 h | 4 |
| July | 7°C | 13 mm | 269 h | 7 |
| August | 9°C | 87 mm | 201 h | 5 |
| September | 12°C | 47 mm | 293 h | 6 |
| October | 15°C | 24 mm | 327 h | 5 |
| November | 17°C | 88 mm | 349 h | 6 |
| December | 17°C | 72 mm | 363 h | 7 |
About 3,460 hours of sun a year. Roughly 71 rainy days a year.
These are long-run climate normals, not a forecast. A given year can sit well outside them. PM2.5 is a global model: near the coast it counts sea salt as fine particulate and reads high against ground stations, sometimes by a factor of two. Use the shape of the year, not the absolute number.
where these numbers come from
- · Temperature, rainfall and sunshine: ECMWF ERA5 reanalysis climate normals via Open-Meteo (CC BY 4.0), fetched once and stored.
- · PM2.5: Copernicus CAMS reanalysis, monthly means. Modelled, not station readings; near coasts CAMS counts sea salt as PM2.5 and reads high.
Last reviewed 2026-05-24. Full method, licences and the list of sources we rejected are on the methodology page.