Climate averages 1991–2020
Bahía Blanca weather
in October.
A mild, moderately wet month: the 7th warmest and the 10th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
October is a mild month in Bahía Blanca: daytime highs average 20.6°C and nights cool to about 10.9°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 64 mm of rain on roughly 8 days, which makes October a moderately wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 04 min on an average October day.
The nearest other city in this atlas is Olavarría (265 km away). In October its highs average 19.7°C, 0.9°C cooler than Bahía Blanca, with 90 mm of rain.
Among the 67 cities listed in Argentina, Bahía Blanca ranks joint 52nd of 67 for the warmest October highs and 13th of 67 for the driest October (rainfall, lowest first). The mean October high of those 67 cities is 22.2°C; Bahía Blanca is 1.6°C cooler than that mean.
From October to November, average highs rise by 3.8°C to 24.5°C, and monthly rainfall falls from 64 mm to 63 mm.
The annual picture
October 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 | 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, selected | 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
October in nearby cities
- Olavarría in OctoberArgentina · 265 kmHigh 19.7°C · Low 9.2°C · 90 mm rain
- Santa Rosa, Argentina in OctoberArgentina · 294 kmHigh 21.9°C · Low 11.2°C · 82 mm rain
- Necochea in OctoberArgentina · 307 kmHigh 16.7°C · Low 9.9°C · 73 mm rain
- Tandil in OctoberArgentina · 315 kmHigh 18.9°C · Low 8.4°C · 85 mm rain
- Mar del Plata in OctoberArgentina · 418 kmHigh 17.3°C · Low 9.8°C · 80 mm rain
- General Roca in OctoberArgentina · 462 kmHigh 22.4°C · Low 10.3°C · 36 mm rain
- Junín in OctoberArgentina · 473 kmHigh 21.9°C · Low 11.8°C · 119 mm rain
- Cipolletti in OctoberArgentina · 496 kmHigh 22.3°C · Low 10.0°C · 30 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.