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Bahía Blanca Weather by Month
Average temperatures, rainfall and humidity for Bahía Blanca, Argentina, month by month, built from OpenWeather’s historical records. Use it to see what a typical Bahía Blanca month looks like before you travel — then check the live Bahía Blanca forecast for the days ahead.
Warmest month
January
30°C average high
Coolest month
July
6°C average low
Wettest month
August
102 mm of rain
Driest month
June
20 mm of rain
Average temperature and rainfall in Bahía Blanca by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 30°C | 19°C | 7°C / 45°C | 32 mm | 49% | 18 km/h |
| February | 29°C | 18°C | 5°C / 42°C | 90 mm | 55% | 17 km/h |
| March | 26°C | 16°C | 4°C / 39°C | 48 mm | 60% | 18 km/h |
| April | 21°C | 13°C | 1°C / 32°C | 43 mm | 66% | 17 km/h |
| May | 17°C | 9°C | -2°C / 29°C | 31 mm | 69% | 15 km/h |
| June | 14°C | 7°C | -4°C / 25°C | 20 mm | 68% | 17 km/h |
| July | 13°C | 6°C | -3°C / 23°C | 36 mm | 68% | 16 km/h |
| August | 16°C | 7°C | -4°C / 26°C | 102 mm | 61% | 17 km/h |
| September | 18°C | 9°C | -1°C / 31°C | 36 mm | 60% | 17 km/h |
| October | 21°C | 11°C | 0°C / 38°C | 43 mm | 59% | 17 km/h |
| November | 25°C | 14°C | 4°C / 37°C | 37 mm | 53% | 17 km/h |
| December | 29°C | 17°C | 5°C / 39°C | 27 mm | 47% | 18 km/h |
Best time to visit Bahía Blanca
The most comfortable time to visit Bahía Blanca is generally March and October to November, balancing mild daytime temperatures against the driest stretch of the year. The city has a moderate seasonal swing and rain concentrates around August, totalling about 543 mm a year.
Travellers who prefer heat should aim for January, when highs average 30°C. August is the month to avoid if rain would spoil your plans — it averages 102 mm, roughly 5× the rainfall of the driest month (June).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Bahía Blanca forecast for what is happening now.