Climate averages 1991–2020
Constantine weather
in September.
A hot, fairly dry month: the 4th warmest and the 4th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Constantine: daytime highs average 28.6°C and nights cool to about 16.1°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 31 mm of rain on roughly 8 days, which makes September a fairly dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 27 min on an average September day.
The nearest other city in this atlas is El Khroub (13 km away). In September its highs average 28.8°C, about as warm as Constantine, with 38 mm of rain.
Among the 55 cities listed in Algeria, Constantine ranks 33rd of 55 for the warmest September highs and joint 28th of 55 for the driest September (rainfall, lowest first). The mean September high of those 55 cities is 29.2°C; Constantine is 0.6°C cooler than that mean.
From September to October, average highs fall by 4.6°C to 24.0°C, and monthly rainfall rises from 31 mm to 36 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
Constantine climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 12.5°C2.6°C | 2.6°C | 45 | 8.5 | 10.010 h |
| February | 13.3°C2.8°C | 2.8°C | 42 | 8.3 | 10.811 h |
| March | 16.5°C5.1°C | 5.1°C | 50 | 9.1 | 11.912 h |
| April | 19.6°C7.4°C | 7.4°C | 52 | 9.4 | 13.113 h |
| May | 24.4°C11.0°C | 11.0°C | 48 | 7.8 | 14.114 h |
| June | 29.7°C15.2°C | 15.2°C | 19 | 5.3 | 14.615 h |
| July | 34.0°C18.3°C | 18.3°C | 8.8 | 3.3 | 14.414 h |
| August | 33.8°C18.8°C | 18.8°C | 19 | 5.3 | 13.514 h |
| September, selected | 28.6°C16.1°C | 16.1°C | 31 | 8.0 | 12.412 h |
| October | 24.0°C12.3°C | 12.3°C | 36 | 7.5 | 11.311 h |
| November | 17.4°C7.4°C | 7.4°C | 38 | 6.7 | 10.310 h |
| December | 13.4°C4.0°C | 4.0°C | 44 | 7.5 | 9.710 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
- El Khroub in SeptemberAlgeria · 13 kmHigh 28.8°C · Low 16.4°C · 38 mm rain
- Skikda in SeptemberAlgeria · 63 kmHigh 27.0°C · Low 20.4°C · 34 mm rain
- Guelma in SeptemberAlgeria · 73 kmHigh 29.5°C · Low 17.2°C · 40 mm rain
- El Eulma in SeptemberAlgeria · 86 kmHigh 26.3°C · Low 15.1°C · 42 mm rain
- Jijel in SeptemberAlgeria · 91 kmHigh 27.1°C · Low 20.0°C · 65 mm rain
- Aïn Beïda in SeptemberAlgeria · 94 kmHigh 26.6°C · Low 14.8°C · 31 mm rain
- Batna in SeptemberAlgeria · 98 kmHigh 26.8°C · Low 14.4°C · 46 mm rain
- Sétif in SeptemberAlgeria · 109 kmHigh 25.2°C · Low 14.3°C · 47 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 Constantine) is explained once on the Constantine year overview and on the Sources, method and limits page.