Climate averages 1991–2020
Aïn Oussera weather
in September.
A hot, fairly dry month: the 4th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Aïn Oussera: daytime highs average 29.4°C and nights cool to about 16.5°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 22 mm of rain on roughly 4 days, which makes September a fairly dry month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 26 min on an average September day.
The nearest other city in this atlas is Hassi Bahbah (44 km away). In September its highs average 28.7°C, 0.7°C cooler than Aïn Oussera, with 24 mm of rain.
Among the 55 cities listed in Algeria, Aïn Oussera ranks 21st of 55 for the warmest September highs and joint 15th of 55 for the driest September (rainfall, lowest first). The mean September high of those 55 cities is 29.2°C; Aïn Oussera is 0.1°C warmer than that mean.
From September to October, average highs fall by 5.7°C to 23.7°C, and monthly rainfall rises from 22 mm to 23 mm.
The annual picture
September 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
Aïn Oussera climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 11.7°C1.7°C | 1.7°C | 21 | 4.9 | 10.110 h |
| February | 13.5°C2.3°C | 2.3°C | 18 | 4.9 | 10.911 h |
| March | 17.7°C5.1°C | 5.1°C | 24 | 4.6 | 11.912 h |
| April | 21.4°C8.2°C | 8.2°C | 27 | 5.1 | 13.113 h |
| May | 26.6°C12.4°C | 12.4°C | 25 | 4.6 | 14.014 h |
| June | 32.6°C17.3°C | 17.3°C | 9.6 | 2.1 | 14.515 h |
| July | 36.8°C20.9°C | 20.9°C | 4.1 | 1.1 | 14.314 h |
| August | 35.7°C20.8°C | 20.8°C | 7.4 | 1.7 | 13.513 h |
| September, selected | 29.4°C16.5°C | 16.5°C | 22 | 4.1 | 12.412 h |
| October | 23.7°C11.7°C | 11.7°C | 23 | 4.3 | 11.311 h |
| November | 16.4°C6.4°C | 6.4°C | 19 | 4.3 | 10.310 h |
| December | 12.4°C2.9°C | 2.9°C | 20 | 4.6 | 9.810 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
September in nearby cities
- Hassi Bahbah in SeptemberAlgeria · 44 kmHigh 28.7°C · Low 16.0°C · 24 mm rain
- Médéa in SeptemberAlgeria · 91 kmHigh 26.9°C · Low 15.2°C · 32 mm rain
- Djelfa in SeptemberAlgeria · 92 kmHigh 27.5°C · Low 15.3°C · 36 mm rain
- Khemis Miliana in SeptemberAlgeria · 109 kmHigh 30.3°C · Low 18.3°C · 31 mm rain
- Blida in SeptemberAlgeria · 113 kmHigh 28.2°C · Low 18.3°C · 32 mm rain
- Bou Saâda in SeptemberAlgeria · 118 kmHigh 30.3°C · Low 17.6°C · 34 mm rain
- Beni Mered in SeptemberAlgeria · 119 kmHigh 29.7°C · Low 19.1°C · 32 mm rain
- Sougueur in SeptemberAlgeria · 131 kmHigh 26.8°C · Low 15.3°C · 33 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 Aïn Oussera) is explained once on the Aïn Oussera year overview and on the Sources, method and limits page.