Mar del Plata, on Argentina’s Atlantic coast, features a temperate oceanic climate with warm, sunny summers and cool, humid winters. The city experiences moderate rainfall year-round, frequent breezes, and significant seasonal contrasts. With long summer days and lively beach culture, Mar del Plata is a favourite destination for both relaxation and vibrant city life.
The best times to travel section shows how the months compare for a visit, so you can find the time of year that fits what you want to do.
Background colours of the months:
The colour shows the typical temperature: yellow (hot), green (mild) and blue (cold). How strong the colour is shows the travel season: full colour means high season, soft colour means shoulder season and soft-striped means off season.
Weather symbols:
Each month has one symbol showing what the weather is typically like, such as hot and sunny, freezing or a rainy or snowy season. Use them to quickly spot months that match the weather you want, or to avoid the ones that don't.
Crowdedness:
The people icon shows how busy the place usually is. The more people, the more crowded it gets.
Additional notes:
The grey info boxes point out special things worth knowing, like recurring weather issues or seasonal events.
Mar del Plata’s climate is shaped by its coastal location, resulting in four distinct seasons and moderate temperature swings. Summers (December–February) are warm and sunny, with average highs of 24–26°C and lows of 13–15°C. While heatwaves can occasionally push temperatures above 30°C, refreshing sea breezes and cool nights are common. The sea temperature reaches 20°C in February, making swimming possible, though the water remains cool. Rainfall is moderate, with January and December each receiving around 70–90 mm, and summer storms can bring brief heavy showers. Sunshine is abundant, with 9 hours per day and up to 15 hours of daylight at the solstice. Humidity is generally comfortable, but can rise during rainy spells.
Winters (June–August) are cool and damp, with highs of 13–14°C and lows of 3–4°C. Nights can drop below freezing, and fog is common, especially in late autumn and early winter. Snow is rare but possible, and the city can experience cold spells from polar air masses. Rainfall is steady, with June and July being among the driest months (about 56–63 mm), while winds from the southeast, known as 'sudestadas,' can bring rough seas and wet, stormy weather. Spring (September–November) and autumn (March–May) are transitional, with mild to warm temperatures (16–22°C), frequent humidity, and rapidly changing weather. Annual precipitation is about 850 mm, and Mar del Plata enjoys over 3,300 hours of sunshine per year, supporting its vibrant outdoor and beach scene.
| Average climate data for Mar del Plata, Argentina | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Average maximum temperature (°C) | 25 | 25 | 22 | 19 | 16 | 13 | 11 | 13 | 14 | 16 | 19 | 23 | 25 |
| Average minimum temperature (°C) | 17 | 18 | 16 | 13 | 11 | 8 | 7 | 7 | 8 | 10 | 12 | 15 | 7 |
| Average precipitation (mm) | 36 | 49 | 31 | 34 | 32 | 33 | 29 | 25 | 30 | 41 | 43 | 35 | 418 |
| Average rainfall days (days) | 10 | 9 | 10 | 10 | 8 | 7 | 9 | 8 | 9 | 11 | 11 | 10 | 114 |
| Average snowfall days (days) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Average relative humidity (%) | 66 | 69 | 71 | 73 | 75 | 73 | 78 | 77 | 76 | 76 | 74 | 68 | 73 |
| Average wind speed (km/h) | 21 | 20 | 20 | 20 | 19 | 21 | 20 | 20 | 20 | 19 | 20 | 21 | 20 |
| Average water temperature (°C) | 21 | 20 | 20 | 17 | 15 | 13 | 11 | 11 | 10 | 12 | 15 | 17 | 15 |
| Average daily daylight hours (h) | 14 | 13 | 12 | 11 | 10 | 9 | 9 | 10 | 11 | 13 | 14 | 14 | 12 |
| Average daily sunshine hours (h) | 11 | 8 | 8 | 8 | 5 | 5 | 5 | 7 | 7 | 8 | 10 | 11 | 8 |
| Average cloud coverage (%) | 20 | 24 | 29 | 32 | 37 | 35 | 40 | 35 | 36 | 36 | 28 | 22 | 31 |
| Average UV index | 6 | 5 | 5 | 4 | 4 | 3 | 3 | 4 | 3 | 4 | 4 | 5 | 4 |
The best time to visit Mar del Plata is from December to March, when temperatures are warmest (24–26°C), days are longest, and the city is vibrant with beach life, festivals, and outdoor events. These months offer ideal conditions for swimming, sunbathing, and enjoying the lively summer atmosphere, though booking ahead is advised due to popularity.
The least favourable time to visit is from June to August, when temperatures are lowest, days are shortest, and frequent fog, rain, and cold winds can limit outdoor activities. While winter offers peaceful beaches and cultural events, the cool, damp, and sometimes stormy weather may not appeal to all travellers.
Mar del Plata has a temperate oceanic climate with warm, sunny summers and cool, humid winters. Rain falls year-round, with the wettest months in spring and early summer. Sea breezes and humidity are common.
The best time to visit Mar del Plata is from December to March, when the weather is warm, days are long, and the city is lively with festivals and beach activities. Early autumn is also pleasant for sightseeing.
Snow is rare in Mar del Plata, but possible during cold winter nights. Most winter precipitation falls as rain or drizzle, and fog is common in late autumn and winter.
Summer highs in Mar del Plata typically reach 24–26°C, with January and February being the warmest months. Heatwaves can push temperatures above 30°C, but sea breezes and cool nights are common.
The Atlantic near Mar del Plata reaches 20°C in February, making swimming possible for most visitors. The water is cooler in spring and autumn, and coldest in winter.
Mar del Plata receives about 850 mm of rain annually, with rainfall spread throughout the year. The wettest months are March and October, while June and July are drier.
Pack layers for cool mornings and evenings, a rain jacket for showers, and sun protection for summer. Even in summer, bring a jumper for breezy nights. In winter, bring warm, waterproof clothing.
The warmest month, with the highest average maximum temperature, is January (25.3 °C). The month with the lowest average maximum temperature is July (11.4 °C). Overall, the average maximum temperature over the whole year is 18.1 °C.
The month with the highest average minimum temperature is February (17.5 °C). The coldest month, with the lowest average minimum temperature, is July (6.9 °C). Overall, the average minimum temperature over the whole year is 11.8 °C.
The month with the highest average water temperature is January (20.8 °C). The month with the lowest average water temperature is September (10.4 °C). Overall, the average water temperature over the whole year is 15.2 °C.
The wettest month, with the highest amount of precipitation, is February (49.1 mm). The driest month, with the least amount of precipitation, is August (25 mm). Over the whole year there are 418.3 mm of rainfall on average.
The month with the most days of rain is November (11 days). The month with the fewest days of rain is June (7.2 days). Over the whole year there are 113.6 days of rain on average.
The month with the most days of snowfall is December (0.1 days). The months with the fewest days of snowfall are January, February, April, May, July, September, October and November (0 days). Over the whole year there are 0.3 days of snowfall on average.
The month with the highest average relative humidity is July (77.7 %). The month with the lowest average relative humidity is January (65.6 %). The overall average relative humidity over the whole year is 72.9 %.
The windiest month, with the highest average wind speed, is June (21.2 km/h). The calmest month, with the lowest average wind speed, is May (19 km/h). The overall average wind speed over the whole year is 20 km/h.
The month with the cloudiest skies, so the highest cloud coverage, is July (40.3 %). The month with the clearest skies, so the lowest cloud coverage, is January (20.5 %). Over the whole year there is an average cloud coverage of 31.2 %.
The month with the longest days, so the most daylight, is December (Average daylight: 14.1 h). The month with the shortest days, so the least daylight, is June (Average daylight: 9.1 h). Over the whole year there are 11.7 h of daylight per day on average.
The month with the most sunshine per day is December (Average sunshine: 11 h). The month with the least sunshine per day is June (Average sunshine: 5 h). Over the whole year there are 7.8 h of sunlight per day on average.
The month with the highest average UV index is January (UV index: 6). The months with the lowest average UV index are June, July and September (UV index: 3). Over the whole year the average UV index is 4.2.
