(according to the Köppen classification, humid subtropical climate - Cfa), with mild winters and hot summers. Winter is a fairly dry season, while the wettest period is from October to March. The wind blows frequently.
The city is located in central Argentina, at 39 degrees south latitude, in the southern part of the Pampa, in a bay overlooking the Atlantic Ocean, southwest of Mar del Plata.
, in fact, it is exposed both to outbreaks of cold air of Antarctic origin and to invasions of hot air of tropical origin.
, from December to February, it can sometimes get cold at night, while in other circumstances there can be heat waves. The highest recorded temperature was 44 °C (111 °F), on January 21, 1980. In any case, the wind blows frequently even in this season, moreover, the sea is not warm.
, from June to August, fog can sometimes form. Snow is rare, but at night the temperature can drop below freezing. The lowest recorded temperature was -12 °C (11 °F), on July 4, 1988.
To visit Bahía Blanca you can choose spring and autumn, in October and April, although they are not dry seasons, to avoid both the possible heat of the summer and the possible cold of the winter. However, there are changes in temperature even in these periods.
Summer is the warmest and sunniest season, but it can sometimes get very hot. The sea reaches its highest temperatures from January to March, although it remains cool even in this period.
. Here are the average temperatures.
January, the warmest month of the year, is generally a warm to hot month. However, there are remarkable differences between night and day. The average temperature is of
23.8 °C, with a minimum of
16.3 °C and a maximum of
31.2 °C.
On the coldest nights of the month, the temperature usually drops to around
8 °C. However, it dropped to
3.7 °C in January 2015.
On the warmest days of the month, the temperature usually reaches around
38 °C. However, it reached
41.4 °C in January 2006.
Precipitation amounts to
66.2 mm, distributed over 6 days.
The day lasts on average 14 hours and 30 minutes. So the days are long.
There are on average 10 hours of sunshine per day. So, the sun shines 69% of the time.
The average humidity is 50%.
The average wind speed is of
24 kph.
The average sea temperature is of
20.4 °C. Therefore, the sea is cool for swimming.
February is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of
22.4 °C, with a minimum of
15.2 °C and a maximum of
29.6 °C.
On the coldest nights of the month, the temperature usually drops to around
7 °C. However, it dropped to
2.5 °C in February 2019.
On the warmest days of the month, the temperature usually reaches around
37 °C. However, it reached
40.6 °C in February 2006.
Precipitation amounts to
69.4 mm, distributed over 5 days.
The day lasts on average 13 hours and 30 minutes.
There are on average 9.5 hours of sunshine per day. So, the sun shines 69% of the time.
The average humidity is 56%.
The average wind speed is of
22.2 kph.
The average sea temperature is of
21.1 °C. Therefore, the sea is cool for swimming.
March is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of
20.2 °C, with a minimum of
13.4 °C and a maximum of
27 °C.
On the coldest nights of the month, the temperature usually drops to around
5 °C. However, it dropped to
0.8 °C in March 2008.
On the warmest days of the month, the temperature usually reaches around
35 °C. However, it reached
39 °C in March 2003.
Precipitation amounts to
70.6 mm, distributed over 6 days.
The day lasts on average 12 hours and 20 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 65% of the time.
The average humidity is 61%.
The average wind speed is of
21.1 kph.
The average sea temperature is of
20.6 °C. Therefore, the sea is cool for swimming.
April is generally a very mild month. The average temperature is of
15.7 °C, with a minimum of
9.4 °C and a maximum of
22 °C.
On the coldest nights of the month, the temperature usually drops to around
1 °C. However, it dropped to
-2.6 °C in April 2010.
On the warmest days of the month, the temperature usually reaches around
29.5 °C. However, it reached
33.8 °C in April 2018.
Precipitation amounts to
53.2 mm, distributed over 5 days.
The day lasts on average 11 hours and 0 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 60% of the time.
The average humidity is 67%.
The average wind speed is of
19.7 kph.
The average sea temperature is of
18.6 °C. Therefore, the sea is very cool for swimming.
May is generally a mild month. The average temperature is of
12 °C, with a minimum of
6.4 °C and a maximum of
17.7 °C.
On the coldest nights of the month, the temperature usually drops to around
-2 °C. However, it dropped to
-5.5 °C in May 2007.
On the warmest days of the month, the temperature usually reaches around
25 °C. However, it reached
31.8 °C in May 2009.
Precipitation amounts to
41.5 mm, distributed over 4 days.
The day lasts on average 10 hours and 0 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 52% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is of
18.8 kph.
The average sea temperature is of
16.2 °C. Therefore, the sea is cold for swimming.
June is generally a mild month. The average temperature is of
9 °C, with a minimum of
3.5 °C and a maximum of
14.5 °C.
On the coldest nights of the month, the temperature usually drops to around
-4.5 °C. However, it dropped to
-9.8 °C in June 2002.
On the warmest days of the month, the temperature usually reaches around
21 °C. However, it reached
24.5 °C in June 2013.
Precipitation amounts to
32.6 mm, distributed over 4 days.
The day lasts on average 9 hours and 30 minutes. June 21, the winter solstice, is the shortest day of the year in the Southern Hemisphere.
There are on average 4.5 hours of sunshine per day. So, the sun shines 48% of the time.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is of
20.1 kph.
The average sea temperature is of
13.8 °C. Therefore, the sea is very cold for swimming.
July, the coldest month of the year, is generally a quite mild month. The average temperature is of
8.2 °C, with a minimum of
2.4 °C and a maximum of
13.9 °C.
On the coldest nights of the month, the temperature usually drops to around
-5 °C. However, it dropped to
-10 °C in July 2007.
On the warmest days of the month, the temperature usually reaches around
21.5 °C. However, it reached
27 °C in July 2008.
Precipitation amounts to
32.4 mm, distributed over 4 days.
The day lasts on average 9 hours and 50 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 49% of the time.
The average humidity is 70%.
The average wind speed is of
19.8 kph.
The average sea temperature is of
11.9 °C. Therefore, the sea is very cold for swimming.
August is generally a mild month. The average temperature is of
10.3 °C, with a minimum of
4.1 °C and a maximum of
16.5 °C.
On the coldest nights of the month, the temperature usually drops to around
-3.5 °C. However, it dropped to
-7.9 °C in August 2013.
On the warmest days of the month, the temperature usually reaches around
25.5 °C. However, it reached
32.6 °C in August 2013.
Precipitation amounts to
31.7 mm, distributed over 4 days.
The day lasts on average 10 hours and 40 minutes.
There are on average 5.5 hours of sunshine per day. So, the sun shines 53% of the time.
The average humidity is 64%.
The average wind speed is of
21.1 kph.
The average sea temperature is of
11 °C. Therefore, the sea is very cold for swimming.
September is generally a mild month. However, there are remarkable differences between night and day. The average temperature is of
12.2 °C, with a minimum of
5.6 °C and a maximum of
18.9 °C.
On the coldest nights of the month, the temperature usually drops to around
-3 °C. However, it dropped to
-5.8 °C in September 2008.
On the warmest days of the month, the temperature usually reaches around
27.5 °C. However, it reached
30.5 °C in September 2013.
Precipitation amounts to
45 mm, distributed over 4 days.
The day lasts on average 11 hours and 55 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 54% of the time.
The average humidity is 61%.
The average wind speed is of
21.2 kph.
The average sea temperature is of
11.4 °C. Therefore, the sea is very cold for swimming.
October is generally a very mild month. However, there are remarkable differences between night and day. The average temperature is of
15.3 °C, with a minimum of
8.5 °C and a maximum of
22.1 °C.
On the coldest nights of the month, the temperature usually drops to around
0.5 °C. However, it dropped to
-3.2 °C in October 2011.
On the warmest days of the month, the temperature usually reaches around
30.5 °C. However, it reached
34.5 °C in October 1999.
Precipitation amounts to
69.5 mm, distributed over 7 days.
The day lasts on average 13 hours and 10 minutes.
There are on average 7.5 hours of sunshine per day. So, the sun shines 58% of the time.
The average humidity is 61%.
The average wind speed is of
21.3 kph.
The average sea temperature is of
13 °C. Therefore, the sea is very cold for swimming.
November is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of
18.8 °C, with a minimum of
11.6 °C and a maximum of
26 °C.
On the coldest nights of the month, the temperature usually drops to around
3 °C. However, it dropped to
-0.4 °C in November 2007.
On the warmest days of the month, the temperature usually reaches around
34 °C. However, it reached
37.5 °C in November 2008.
Precipitation amounts to
62.3 mm, distributed over 6 days.
The day lasts on average 14 hours and 20 minutes. So the days are long.
There are on average 9 hours of sunshine per day. So, the sun shines 63% of the time.
The average humidity is 55%.
The average wind speed is of
22.3 kph.
The average sea temperature is of
15.5 °C. Therefore, the sea is cold for swimming.
December is generally a warm month. However, there are remarkable differences between night and day. The average temperature is of
22.1 °C, with a minimum of
14.5 °C and a maximum of
29.7 °C.
On the coldest nights of the month, the temperature usually drops to around
6 °C. However, it dropped to
2.8 °C in December 2018.
On the warmest days of the month, the temperature usually reaches around
37 °C. However, it reached
40.8 °C in December 2013.
Precipitation amounts to
64.7 mm, distributed over 5 days.
The day lasts on average 14 hours and 50 minutes. So the days are long. December 21, the summer solstice, is the longest day of the year in the Southern Hemisphere.
There are on average 10 hours of sunshine per day. So, the sun shines 68% of the time.
The average humidity is 49%.
The average wind speed is of
24 kph.
The average sea temperature is of
18.2 °C. Therefore, the sea is cold for swimming.