Climate averages 1991–2020
Baku weather
in September.
A warm, fairly dry month: the 4th warmest and the 5th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Baku: daytime highs average 24.9°C and nights cool to about 20.6°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 19 mm of rain on roughly 4 days, which makes September a fairly dry month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 30 min on an average September day.
The nearest other city in this atlas is Qaraçuxur (7 km away). In September its highs average 24.2°C, 0.7°C cooler than Baku, with 19 mm of rain.
Among the 11 cities listed in Azerbaijan, Baku ranks 5th of 11 for the warmest September highs and joint 2nd of 11 for the driest September (rainfall, lowest first). The mean September high of those 11 cities is 25.5°C; Baku is 0.6°C cooler than that mean.
From September to October, average highs fall by 5.2°C to 19.7°C, and monthly rainfall rises from 19 mm to 29 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
Baku climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.6°C4.4°C | 4.4°C | 22 | 5.7 | 9.610 h |
| February | 7.6°C4.1°C | 4.1°C | 24 | 5.4 | 10.611 h |
| March | 10.0°C6.0°C | 6.0°C | 21 | 4.7 | 11.912 h |
| April | 14.3°C9.7°C | 9.7°C | 20 | 4.9 | 13.313 h |
| May | 20.4°C15.3°C | 15.3°C | 13 | 3.2 | 14.414 h |
| June | 25.7°C20.6°C | 20.6°C | 5.6 | 1.4 | 15.015 h |
| July | 28.7°C23.9°C | 23.9°C | 6.7 | 1.2 | 14.715 h |
| August | 29.1°C24.4°C | 24.4°C | 5.7 | 1.0 | 13.814 h |
| September, selected | 24.9°C20.6°C | 20.6°C | 19 | 3.6 | 12.513 h |
| October | 19.7°C15.9°C | 15.9°C | 29 | 6.0 | 11.211 h |
| November | 13.6°C10.4°C | 10.4°C | 36 | 7.4 | 10.010 h |
| December | 9.6°C6.5°C | 6.5°C | 27 | 6.0 | 9.49 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
- Qaraçuxur in SeptemberAzerbaijan · 7 kmHigh 24.2°C · Low 20.4°C · 19 mm rain
- Khirdalan in SeptemberAzerbaijan · 14 kmHigh 24.6°C · Low 19.7°C · 21 mm rain
- Sumgayit in SeptemberAzerbaijan · 30 kmHigh 24.3°C · Low 20.3°C · 21 mm rain
- Şirvan in SeptemberAzerbaijan · 95 kmHigh 28.7°C · Low 18.9°C · 23 mm rain
- Pārsābād in SeptemberIran · 187 kmHigh 28.7°C · Low 18.9°C · 29 mm rain
- Lankaran in SeptemberAzerbaijan · 201 kmHigh 24.3°C · Low 21.6°C · 128 mm rain
- Lerik in SeptemberAzerbaijan · 219 kmHigh 21.5°C · Low 13.7°C · 117 mm rain
- Derbent in SeptemberRussia · 231 kmHigh 22.9°C · Low 18.5°C · 59 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 Baku) is explained once on the Baku year overview and on the Sources, method and limits page.
Qaraçuxur lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.