Climate averages 1991–2020
New Orleans weather
in August.
A hot, wet month: the 2nd warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in New Orleans: daytime highs average 30.7°C and nights cool to about 25.4°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 159 mm of rain on roughly 17 days, which makes August a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 13 h 14 min on an average August day.
The nearest other city in this atlas is Metairie (8 km away). In August its highs average 30.9°C, about as warm as New Orleans, with 148 mm of rain.
Among the 498 cities listed in the United States, New Orleans ranks joint 186th of 498 for the warmest August highs and joint 477th of 498 for the driest August (rainfall, lowest first). The mean August high of those 498 cities is 29.9°C; New Orleans is 0.8°C warmer than that mean.
From August to September, average highs fall by 1.8°C to 28.9°C, and monthly rainfall falls from 159 mm to 123 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
New Orleans climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 15.9°C9.1°C | 9.1°C | 113 | 9.7 | 10.510 h |
| February | 17.8°C10.7°C | 10.7°C | 108 | 8.9 | 11.111 h |
| March | 20.6°C13.6°C | 13.6°C | 114 | 9.4 | 12.012 h |
| April | 23.9°C17.1°C | 17.1°C | 99 | 8.4 | 12.913 h |
| May | 27.7°C21.1°C | 21.1°C | 91 | 9.2 | 13.614 h |
| June | 30.1°C24.3°C | 24.3°C | 131 | 15.0 | 14.014 h |
| July | 30.8°C25.4°C | 25.4°C | 143 | 17.9 | 13.914 h |
| August, selected | 30.7°C25.4°C | 25.4°C | 159 | 17.3 | 13.213 h |
| September | 28.9°C23.5°C | 23.5°C | 123 | 12.8 | 12.412 h |
| October | 25.2°C18.9°C | 18.9°C | 88 | 8.0 | 11.511 h |
| November | 20.4°C13.6°C | 13.6°C | 83 | 7.3 | 10.711 h |
| December | 17.1°C10.5°C | 10.5°C | 96 | 9.2 | 10.310 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
- Metairie in AugustUnited States · 8 kmHigh 30.9°C · Low 25.3°C · 148 mm rain
- Gulfport in AugustUnited States · 105 kmHigh 30.5°C · Low 24.9°C · 161 mm rain
- Baton Rouge in AugustUnited States · 120 kmHigh 32.0°C · Low 24.0°C · 133 mm rain
- Lafayette (Louisiana), United States in AugustUnited States · 189 kmHigh 32.1°C · Low 24.2°C · 121 mm rain
- Mobile in AugustUnited States · 212 kmHigh 31.0°C · Low 24.4°C · 140 mm rain
- Jackson in AugustUnited States · 261 kmHigh 32.6°C · Low 22.7°C · 95 mm rain
- Lake Charles in AugustUnited States · 302 kmHigh 32.3°C · Low 24.4°C · 117 mm rain
- Beaumont in AugustUnited States · 388 kmHigh 32.4°C · Low 24.4°C · 123 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 New Orleans) is explained once on the New Orleans year overview and on the Sources, method and limits page.