Bahía Blanca weather by month & the best time to visit
Argentina · beach resort · humid subtropical climate
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The best time to visit Bahía Blanca is April — its sunniest month (Sunshine Score 86/100), with December and January close behind. Bahía Blanca averages about 3,009 hours of sunshine a year. Daytime highs around 21°C / 70°F and roughly 61 mm of rain in April.
When is the best time to visit Bahía Blanca?
For sunshine, the best time to visit Bahía Blanca is April, then December and January. The dullest month is July (30/100, 37 mm of rain). The full month-by-month picture is in the table below.
How sunny is Bahía Blanca?
Bahía Blanca is one of the sunniest places on Earth: about 3,009 hours of sunshine a year. 56 Sunshine Score points separate April (86) from July (30), so the month you pick matters. It ranks #12 of 41 destinations in Argentina for annual sunshine, above the national median of 2,741 hours. The year's 669 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 | 85 | 32° / 90°F | 16° / 61°F | 64 mm | 11 | 25° / 77°F |
| February | 84 | 30° / 86°F | 16° / 61°F | 69 mm | 9 | 25° / 77°F |
| March | 84 | 26° / 79°F | 13° / 55°F | 69 mm | 7 | 23° / 73°F |
| April | 86 | 21° / 70°F | 9° / 48°F | 61 mm | 4 | 18° / 64°F |
| May | 60 | 16° / 61°F | 6° / 43°F | 40 mm | 2 | 13° / 55°F |
| June | 31 | 12° / 54°F | 3° / 37°F | 23 mm | 1 | 11° / 52°F |
| July | 30 | 12° / 54°F | 2° / 36°F | 37 mm | 2 | 8° / 46°F |
| August | 45 | 14° / 57°F | 3° / 37°F | 34 mm | 3 | 8° / 46°F |
| September | 73 | 18° / 64°F | 5° / 41°F | 51 mm | 4 | 12° / 54°F |
| October | 81 | 21° / 70°F | 8° / 46°F | 88 mm | 6 | 17° / 63°F |
| November | 83 | 26° / 79°F | 12° / 54°F | 74 mm | 9 | 21° / 70°F |
| December | 86 | 30° / 86°F | 14° / 57°F | 59 mm | 10 | 22° / 72°F |
Sea temperature in Bahía Blanca by month
The sea off Bahía Blanca is warmest in January at around 25°C / 77°F, and coolest in July at 8°C / 46°F. The water sits at a comfortable 21°C or warmer roughly 5 months a year. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Bahía Blanca: questions and answers
What kind of destination is Bahía Blanca?
Bahía Blanca is a beach resort in Argentina with a humid subtropical climate — the sea reaches 25°C at its warmest and is swimmable (21°C+) about 5 months a year.
How many hours of sunshine does Bahía Blanca get a year?
Bahía Blanca gets about 3,009 hours of sunshine a year, at its best around April.
When is the best time to visit Bahía Blanca?
The sunniest time to visit Bahía Blanca is April, when the Sunshine Score peaks at 86/100 (with December and January close behind). Expect daytime highs around 21°C / 70°F.
What is the least sunny month in Bahía Blanca?
July is the least sunny month in Bahía Blanca, scoring 30/100 with about 37 mm of rain.
What is the sea temperature in Bahía Blanca?
The sea in Bahía Blanca ranges from about 8°C (July) to 25°C (January). Month-by-month sea temperatures are on this page.
How strong is the sun in Bahía Blanca?
The typical midday UV index in Bahía Blanca peaks around 11 (extreme) 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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