Mar del Plata weather by month & the best time to visit
Argentina · coastal city break · oceanic / maritime climate
The best time to visit Mar del Plata is December — its sunniest month (Sunshine Score 74/100), with March and January close behind. Mar del Plata averages about 2,683 hours of sunshine a year. Daytime highs around 23°C / 73°F and roughly 115 mm of rain in December.
When is the best time to visit Mar del Plata?
For sunshine, the best time to visit Mar del Plata is December, then March and January. The dullest month is July (20/100, 70 mm of rain). The full month-by-month picture is in the table below.
How sunny is Mar del Plata?
Mar del Plata gets a lot of sun: around 2,683 hours a year. 54 Sunshine Score points separate December (74) from July (20), so the month you pick matters. It ranks #24 of 41 destinations in Argentina for annual sunshine, below the national median of 2,741 hours. The year's 1,157 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 72 | 24° / 75°F | 16° / 61°F | 125 mm | 10 | 22° / 72°F |
| February | 72 | 24° / 75°F | 17° / 63°F | 125 mm | 9 | 22° / 72°F |
| March | 73 | 22° / 72°F | 15° / 59°F | 118 mm | 7 | 21° / 70°F |
| April | 69 | 19° / 66°F | 13° / 55°F | 105 mm | 4 | 19° / 66°F |
| May | 47 | 15° / 59°F | 10° / 50°F | 75 mm | 2 | 14° / 57°F |
| June | 28 | 12° / 54°F | 7° / 45°F | 62 mm | 1 | 12° / 54°F |
| July | 20 | 11° / 52°F | 6° / 43°F | 70 mm | 2 | 10° / 50°F |
| August | 27 | 12° / 54°F | 6° / 43°F | 78 mm | 3 | 10° / 50°F |
| September | 34 | 13° / 55°F | 7° / 45°F | 77 mm | 4 | 12° / 54°F |
| October | 51 | 16° / 61°F | 9° / 48°F | 101 mm | 6 | 15° / 59°F |
| November | 69 | 19° / 66°F | 12° / 54°F | 106 mm | 8 | 17° / 63°F |
| December | 74 | 23° / 73°F | 15° / 59°F | 115 mm | 10 | 18° / 64°F |
Sea temperature in Mar del Plata by month
The sea off Mar del Plata is warmest in January at around 22°C / 72°F, and coolest in July at 10°C / 50°F. The water sits at a comfortable 21°C or warmer roughly 3 months a year. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
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Mar del Plata: questions and answers
What kind of destination is Mar del Plata?
Mar del Plata is a coastal city break in Argentina with a oceanic / maritime climate — the sea reaches 22°C at its warmest and is swimmable (21°C+) about 3 months a year.
How many hours of sunshine does Mar del Plata get a year?
Mar del Plata gets about 2,683 hours of sunshine a year, at its best around December.
When is the best time to visit Mar del Plata?
The sunniest time to visit Mar del Plata is December, when the Sunshine Score peaks at 74/100 (with March and January close behind). Expect daytime highs around 23°C / 73°F.
What is the least sunny month in Mar del Plata?
July is the least sunny month in Mar del Plata, scoring 20/100 with about 70 mm of rain.
What is the sea temperature in Mar del Plata?
The sea in Mar del Plata ranges from about 10°C (July) to 22°C (January). Month-by-month sea temperatures are on this page.
How strong is the sun in Mar del Plata?
The typical midday UV index in Mar del Plata peaks around 10 (very high) in January, easing to about 1 (low) in June. Month-by-month midday UV values are in the UV column of the table on this page.
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