Climate and monthly weather forecast
Bahía Blanca, Argentina

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The climate of Bahía Blanca

Located in Argentina, Bahía Blanca falls under the Köppen climate classification of Cfa, indicative of a humid subtropical climate with no dry season. Wide-reaching climate information reveals a pattern of weather which fluctuates from month to month, although various patterns emerge from the data.

Temperatures display an annual trend, reaching their apex in January with an average high of 29.8°C (85.6°F), while the lows are observed in July with the mercury dropping to an average low of 6.2°C (43.2°F). Variations in humidity are evident across the year, with the most moist conditions surfacing from May to July, when the relative humidity stays in the 60s, with humidity peaking in May at 65%. Notably, rainfall maintains its presence throughout the year with the heaviest downpours occurring in November accumulating 44mm (1.73").

Unique climate aspects are the absence of snowfall with the rare exception seen in July, and the uniform visibility throughout the year at 10 km. Maximum wind speed is relatively stable all year round except for June when it increases to 20.5km/h (12.7mph). The sea temperature plays its part in the climate behavior and sees its maximum at 21°C (69.8°F) from February to March and lowest in August and September at 12°C (53.6°F).

The best time to visit Bahía Blanca

For visitors who prefer a warm climate, January could be the ideal time to visit Bahía Blanca. With an average high temperature of 29.8°C (85.6°F) and low humidity of 44%, visitors can comfortably explore the city. Moreover, January provides the longest daylight hours of 14.5 hours, maximizing the time visitors can spend outdoors.

The worst time to visit Bahía Blanca

If colder temperatures and high humidity levels are not appealing, then July might not be the best time to plan a visit. With average low temperature trailing down to 6.2°C (43.2°F) and relative humidity climbing up to 65%, this month can be less comfortable for outdoor activities.

Spring weather in Bahía Blanca

Spring in Bahía Blanca is ushered in from September to November. Average high temperatures range from 16.8°C (62.2°F) to 23.8°C (74.8°F), with noticeable heating as the season progresses. Rainfall peaks in November at 44mm (1.73"), while humidity hovers around the mid-60 range, dropping slightly in November.

Summer weather in Bahía Blanca

December through February marks the summer period in Bahía Blanca. During this time, the city experiences its warmest months, with average high temperatures climbing up to 28.5°C (83.3°F) in February. The amount of rainfall also decreases during summer with 21mm (0.83") falling in December.

Autumn weather in Bahía Blanca

Autumn runs from March to May in Bahía Blanca. Within this frame, average high and low temperatures gradually decline, moving from 25.6°C (78.1°F) to 16.8°C (62.2°F) and 16.6°C (61.9°F) to 10.6°C (51.1°F) respectively. The maximum recorded rainfall during this season is 31mm (1.22") in March.

Winter weather in Bahía Blanca

In the months of June, July, and August, Bahía Blanca experiences winter, marked by cooler temperatures. It is this time when the temperature drops to the year's low of 6.2°C (43.2°F) in July. The amount of rainfall remains low throughout the season, varying from 12mm (0.47") to 23mm (0.91"). The days are shorter with daylight hours fluctuating from 9.5 to 10.7 hours.

Weather in January

The start of the year in Bahía Blanca, Argentina, is greeted with the warmest spells, guiding the city into its summer zenith. Balmy afternoons with sunlight lasting for approximately 14.5 hrs a day, combined with high UV index, make it the perfect time to hit the beaches. Weather in January »

Weather in February

The weather continues to uphold its warm demeanor in February, although temperatures do witness a slight dip compared to January. From soaking up the sun at the beach to enjoying late-night barbeques, the weather is remarkably conducive to the variety of activities Bahía Blanca has to offer. Weather in February »

Weather in March

Entering into the shoulder season, Bahía Blanca experiences a transition in March, as the hot summer starts to cool down. The decline in temperature is not abrupt, ensuring a smooth transition to the residents and tourists alike. Weather in March »

Weather in April

April brings with it the essence of fall in Bahía Blanca, paving the way for a welcoming respite from the summer's heatwave. With cooler days and even cooler nights becoming a norm, comfort-seeking tourists find this to be an optimal period to revel in the city's charm. Weather in April »

Weather in May

The climate in Bahía Blanca continues to chill in May, with the temperature not venturing beyond 16.8°C (62.2°F). The backdrop of the city takes a dramatic turn, painting a beautiful picture with fall colors shining bright against the city gray. Weather in May »

Weather in June

June marks the advent of winter in Bahía Blanca, and the temperature further drops to a maximum of 13.5°C (56.3°F), presenting a stark contrast to the summer months. The sunlight continues to decrease, with daylight hours not extending more than 9.5 hrs a day, and sunshine hours reaching a yearly low of 6.3 hrs per day. Weather in June »

Weather in July

July is the height of winter in Bahía Blanca, with the city experiencing its coldest month in terms of the average temperature reaching no more than 12.6°C (54.7°F). Despite the cool environs, the city buzzes with life, with several winter festivals and events taking center stage. Weather in July »

Weather in August

August in Bahía Blanca sees the mercury slowly climbing, signaling the departure of winter. The city begins to defrost, albeit slowly, reinstating the spirit of outdoor activities. The temperatures continue to be cool, rarely exceeding 15.2°C (59.4°F), but offer a pleasant contrast to the wintry July weather. Weather in August »

Weather in September

September brings a significant shift in the weather with the onset of Spring in Bahía Blanca. With temperatures rising to a comfortable 16.8°C (62.2°F), the city lights up with blooming flowers and sunny landscapes. The rainfall remains moderate, not exceeding 15mm (0.59"), rendering an ideal environment for the city dwellers and sightseers alike to experience Bahía Blanca in all its glorious color. Weather in September »

Weather in October

In October, Bahía Blanca graces its dwellers with enhanced warmth as the temperatures soar to an agreeable 19.6°C (67.3°F) during the day. The city is awash with hues of fall, turning it into a sight worth capturing at every turn. Weather in October »

Weather in November

As November unravels, Bahía Blanca starts transitioning back to its sun-drenched state from the cooler months. The warm days, with temperatures reaching up to 23.8°C (74.8°F), revive the beach culture, paving the way for a host of water-based activities. Weather in November »

Weather in December

December signals the beginning of summer in Bahía Blanca, and the cityscape transforms to embrace the new season. This time of the year is all about soaking up the sun, with temperatures peaking at 28.5°C (83.3°F). Days are bright and sunny, with daylight stretching up to 14.8 hrs a day, making it an ideal time for outdoor merriment. Weather in December »
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Frequently asked questions

What month is the hottest in Bahía Blanca?

In Bahía Blanca, Argentina, the average temperatures in January are the highest, with a peak at 29.8°C (85.6°F) and a low of 18.9°C (66°F).

What are the least humid months in Bahía Blanca?

The months with the lowest humidity are January and December, with an average relative humidity of 44%.

How many days does it rain in Bahía Blanca?

In Bahía Blanca, during the entire year, the rain falls for 73.5 days and collects up to 280mm (11.02") of precipitation.

When it does not snow in Bahía Blanca?

January through June, August through December are months without snowfall in Bahía Blanca, Argentina.

How many days does it snow in Bahía Blanca?

In Bahía Blanca, Argentina, during the entire year, snow falls for 0.1 days.

When is the highest UV index in Bahía Blanca?

January through March and December, with an average maximum UV index of 6, are months with the highest UV index in Bahía Blanca.

What months are the sea warmest in Bahía Blanca?

February and March, with an average sea temperature of 21°C (69.8°F), are months with the warmest seawater in Bahía Blanca, Argentina.

What are the most humid months in Bahía Blanca?

May and July, with an average relative humidity of 65%, are most humid months in Bahía Blanca.

What is the driest month in Bahía Blanca?

June is the month with the least rainfall. Rain falls for 3.9 days and accumulates 12mm (0.47") of precipitation.

What is the month with the shortest days in Bahía Blanca?

June has the shortest days of the year in Bahía Blanca, with an average of 9h and 30min of daylight.

What is the month with the least sunshine in Bahía Blanca?

The month with the least sunshine in Bahía Blanca is June, with an average of 6.3h of sunshine.

What is the month with the lowest UV index in Bahía Blanca?

The months with the lowest UV index are June, July and September, with an average maximum UV index of 3.

What month is the coldest in Bahía Blanca?

In Bahía Blanca, Argentina, the lowest temperatures are generally noted in July, averaging a high of 12.6°C (54.7°F) and a low of 6.2°C (43.2°F).

When does it snow in Bahía Blanca?

July is the only month when snow falls.

What is the snowiest month in Bahía Blanca?

The month with the most snowfall days in Bahía Blanca is July, when snow falls for 0.1 days.

What months are the sea coldest in Bahía Blanca?

August and September, with an average sea temperature of 12°C (53.6°F), are months with the coldest seawater.

What is the wettest month in Bahía Blanca?

November is the month with the most rainfall in Bahía Blanca, Argentina. Rain falls for 7.9 days and accumulates 44mm (1.73") of precipitation.

When are the longest days in Bahía Blanca?

With an average of 14h and 48min of daylight, December has the longest days of the year.

Is there Daylight Saving Time (DST) in Bahía Blanca?

Bahía Blanca, Argentina, does not utilize Daylight Saving Time (DST). -03 timezone is used over the entire year.

What month has the most sunshine in Bahía Blanca?

With an average of 11.7h of sunshine, December has the most sunshine of the year.

Average temperature
Bahía Blanca, Argentina

Average temperature - Bahía Blanca, Argentina

The warmest month (with the highest average high temperature) is January (29.8°C).
The month with the lowest average high temperature is July (12.6°C).

The month with the highest average low temperature is January (18.9°C).
The coldest month (with the lowest average low temperature) is July (6.2°C).

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Average pressure
Bahía Blanca, Argentina

Average pressure - Bahía Blanca, Argentina

The month with the highest atmospheric pressure is July (1017.9mbar).
The month with the lowest atmospheric pressure is December (1009.7mbar).

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Average wind speed
Bahía Blanca, Argentina

Average wind speed - Bahía Blanca, Argentina

The windiest month (with the highest average wind speed) is June (19.4km/h).
The calmest months (with the lowest average wind speed) are April and May (16.7km/h).

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Average humidity
Bahía Blanca, Argentina

Average humidity - Bahía Blanca, Argentina

The months with the highest relative humidity are May and July (65%).
The months with the lowest relative humidity are January and December (44%).

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Average rainfall
Bahía Blanca, Argentina

Average rainfall - Bahía Blanca, Argentina

The wettest month (with the highest rainfall) is November (44mm).
The driest month (with the least rainfall) is June (12mm).

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Average rainfall days
Bahía Blanca, Argentina

Average rainfall days - Bahía Blanca, Argentina

The month with the highest number of rainy days is November (7.9 days).
The month with the least rainy days is June (3.9 days).

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Average snowfall days
Bahía Blanca, Argentina

Average snowfall days - Bahía Blanca, Argentina

The month with the highest number of snowfall days is July (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, August, September, October, November and December (0 days).

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Average sea temperature
Bahía Blanca, Argentina

Average sea temperature - Bahía Blanca, Argentina

The best months for swimming (with the highest average sea temperature) are February and March (21°C).
The coldest months (with the lowest average sea temperature) are August and September (12°C).

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Average daylight / Average sunshine
Bahía Blanca, Argentina

Average daylight / Average sunshine - Bahía Blanca, Argentina

The month with the longest days is December (Average daylight: 14h and 48min).
The month with the shortest days is June (Average daylight: 9h and 30min).

The month with the most sunshine is December (Average sunshine: 11h and 42min).
The month with the least sunshine is June (Average sunshine: 6h and 18min).

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Average sunshine days
Bahía Blanca, Argentina

Average sunshine days - Bahía Blanca, Argentina

The month with the most sunshine days is August (26.1 days).
The month with the least sunshine days is February (20.5 days).

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Average UV index
Bahía Blanca, Argentina

Average UV index - Bahía Blanca, Argentina

The months with the highest UV index are January, February, March and December (UV index 6).
The months with the lowest UV index are June, July and September (UV index 3).

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Average visibility
Bahía Blanca, Argentina

Average visibility - Bahía Blanca, Argentina

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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Bahía Blanca, Argentina

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