Mobile weather in September
Temperature, sea and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Good
Best time to visit: February – May, October – November
What is the weather like in Mobile in September?
In September, Mobile is hot: daytime highs average 30 °C, and even at night it stays warm at around 22 °C. The sea averages 28.5 °C – lovely and warm for swimming. Expect around 6 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 120 mm in total. On about 14 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is a good month for a holiday in Mobile.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 35 | 60 | 87 |
| Day | 31° | 30° | 26° |
| Night | 25° | 22° | 17° |
| Sea | 30° | 29° | 25° |
| Sun | 7 h | 6 h | 7 h |
| Rain days | 19 | 11 | 7 |
More details for September
- Daylight
- 12 h 24 min06:36 – 18:59
- UV index
- 9 · very highclear sky, noon (estimate)All months
- Muggy days
- 25 daysdew point 18 °C or moreAll months
- Wind
- 14 km/haverage daily peakAll months
- Cloud cover
- 46 %on averageAll months
- Hot days
- 14 days30 °C or moreAll months
- Time zone
- UTC−5America/Chicago
How the score comes together
- Temperatureweight 50 %67 %
- Sunshineweight 20 %57 %
- Few rainy daysweight 30 %51 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in September
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Mobile in September: quick answers
Is Mobile hot in September?
Yes. In September, Mobile is hot: daytime highs average 30 °C and nights stay around 22 °C. On about 14 days the thermometer climbs to 30 °C or more.
Can you swim in Mobile in September?
Yes. In September the sea averages 28.5 °C – lovely and warm for swimming.
Does it rain much in Mobile in September?
Rain is frequent, with about 11 rainy days and 120 mm in total.
Mobile month by month
The whole year in MobileAll destinations: USAWhere to go in SeptemberSea temperature in September
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences