Climate averages 1991–2020
İzmir weather
in September.
A hot, fairly dry month: the 4th warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in İzmir: daytime highs average 30.0°C and nights cool to about 17.7°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 24 mm of rain on roughly 3 days, which makes September a fairly dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 28 min on an average September day.
The nearest other city in this atlas is Karşıyaka (5 km away). In September its highs average 30.2°C, about as warm as İzmir, with 23 mm of rain.
Among the 138 cities listed in Turkey, İzmir ranks joint 38th of 138 for the warmest September highs and joint 77th of 138 for the driest September (rainfall, lowest first). The mean September high of those 138 cities is 27.1°C; İzmir is 2.9°C warmer than that mean.
From September to October, average highs fall by 6.3°C to 23.7°C, and monthly rainfall rises from 24 mm to 65 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
İzmir climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 11.2°C3.0°C | 3.0°C | 111 | 10.1 | 9.810 h |
| February | 12.6°C3.5°C | 3.5°C | 101 | 10.2 | 10.711 h |
| March | 15.7°C5.4°C | 5.4°C | 83 | 9.7 | 11.912 h |
| April | 20.1°C9.1°C | 9.1°C | 64 | 8.1 | 13.213 h |
| May | 25.7°C14.1°C | 14.1°C | 41 | 6.2 | 14.214 h |
| June | 31.4°C18.6°C | 18.6°C | 17 | 3.6 | 14.815 h |
| July | 35.2°C21.3°C | 21.3°C | 3.3 | 1.0 | 14.615 h |
| August | 35.3°C21.5°C | 21.5°C | 4.0 | 1.1 | 13.714 h |
| September, selected | 30.0°C17.7°C | 17.7°C | 24 | 3.2 | 12.512 h |
| October | 23.7°C13.4°C | 13.4°C | 65 | 5.7 | 11.211 h |
| November | 17.4°C8.5°C | 8.5°C | 96 | 7.9 | 10.110 h |
| December | 12.4°C4.8°C | 4.8°C | 109 | 11.4 | 9.510 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
- Karşıyaka in SeptemberTurkey · 5 kmHigh 30.2°C · Low 18.3°C · 23 mm rain
- Bornova in SeptemberTurkey · 12 kmHigh 29.8°C · Low 17.9°C · 24 mm rain
- Manisa in SeptemberTurkey · 33 kmHigh 30.2°C · Low 17.6°C · 24 mm rain
- Turgutlu in SeptemberTurkey · 50 kmHigh 29.9°C · Low 17.5°C · 21 mm rain
- Akhisar in SeptemberTurkey · 83 kmHigh 29.6°C · Low 15.7°C · 13 mm rain
- Aydın in SeptemberTurkey · 88 kmHigh 31.7°C · Low 19.1°C · 20 mm rain
- Salihli in SeptemberTurkey · 88 kmHigh 30.2°C · Low 18.6°C · 24 mm rain
- Soma in SeptemberTurkey · 95 kmHigh 27.5°C · Low 16.0°C · 27 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 İzmir) is explained once on the İzmir year overview and on the Sources, method and limits page.
Bornova lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.