Climate averages 1991–2020
Bahía Blanca weather
in August.
A mild, fairly dry month: the 10th warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a mild month in Bahía Blanca: daytime highs average 15.1°C and nights cool to about 6.4°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 35 mm of rain on roughly 5 days, which makes August a fairly dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 38 min on an average August day.
The nearest other city in this atlas is Olavarría (265 km away). In August its highs average 14.7°C, about as warm as Bahía Blanca, with 54 mm of rain.
Among the 67 cities listed in Argentina, Bahía Blanca ranks joint 55th of 67 for the warmest August highs and 21st of 67 for the driest August (rainfall, lowest first). The mean August high of those 67 cities is 17.2°C; Bahía Blanca is 2.1°C cooler than that mean.
From August to September, average highs rise by 2.5°C to 17.6°C, and monthly rainfall rises from 35 mm to 45 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Bahía Blanca climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.7°C18.7°C | 18.7°C | 54 | 7.1 | 14.515 h |
| February | 28.0°C17.7°C | 17.7°C | 65 | 6.7 | 13.614 h |
| March | 25.3°C16.0°C | 16.0°C | 67 | 6.7 | 12.412 h |
| April | 20.7°C12.2°C | 12.2°C | 55 | 6.0 | 11.111 h |
| May | 16.7°C9.2°C | 9.2°C | 38 | 5.4 | 10.110 h |
| June | 13.4°C6.2°C | 6.2°C | 28 | 4.4 | 9.510 h |
| July | 12.7°C5.0°C | 5.0°C | 34 | 5.0 | 9.710 h |
| August, selected | 15.1°C6.4°C | 6.4°C | 35 | 4.7 | 10.611 h |
| September | 17.6°C8.0°C | 8.0°C | 45 | 6.2 | 11.812 h |
| October | 20.6°C10.9°C | 10.9°C | 64 | 7.7 | 13.113 h |
| November | 24.5°C14.0°C | 14.0°C | 63 | 7.0 | 14.214 h |
| December | 28.0°C16.9°C | 16.9°C | 57 | 6.2 | 14.815 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Olavarría in AugustArgentina · 265 kmHigh 14.7°C · Low 4.9°C · 54 mm rain
- Santa Rosa, Argentina in AugustArgentina · 294 kmHigh 16.2°C · Low 5.7°C · 27 mm rain
- Necochea in AugustArgentina · 307 kmHigh 13.1°C · Low 7.0°C · 57 mm rain
- Tandil in AugustArgentina · 315 kmHigh 14.1°C · Low 4.6°C · 51 mm rain
- Mar del Plata in AugustArgentina · 418 kmHigh 13.5°C · Low 6.6°C · 60 mm rain
- General Roca in AugustArgentina · 462 kmHigh 15.3°C · Low 4.6°C · 14 mm rain
- Junín in AugustArgentina · 473 kmHigh 17.2°C · Low 7.0°C · 45 mm rain
- Cipolletti in AugustArgentina · 496 kmHigh 15.1°C · Low 4.2°C · 12 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Bahía Blanca) is explained once on the Bahía Blanca year overview and on the Sources, method and limits page.