Climate averages 1991–2020
Yerevan weather
in September.
A warm, very dry month: the 4th warmest and the 3rd 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 Yerevan: daytime highs average 25.4°C and nights cool to about 12.8°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 8.4 mm of rain on roughly 2 days, which makes September a very dry month (the 3rd 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 Iğdır (49 km away). In September its highs average 27.1°C, 1.7°C warmer than Yerevan, with 15 mm of rain.
Among the 3 cities listed in Armenia, Yerevan ranks 1st of 3 for the warmest September highs and 1st of 3 for the driest September (rainfall, lowest first). The mean September high of those 3 cities is 21.9°C; Yerevan is 3.5°C warmer than that mean.
From September to October, average highs fall by 7.1°C to 18.3°C, and monthly rainfall rises from 8.4 mm to 16 mm.
The annual picture
September in context
Monthly precipitation
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
Yerevan climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 1.8°C-6.8°C | -6.8°C | 26 | 5.4 | 9.710 h |
| February | 3.4°C-5.5°C | -5.5°C | 32 | 6.9 | 10.611 h |
| March | 8.9°C-1.2°C | -1.2°C | 50 | 9.9 | 11.912 h |
| April | 15.1°C3.6°C | 3.6°C | 59 | 12.4 | 13.213 h |
| May | 20.4°C8.3°C | 8.3°C | 39 | 9.0 | 14.414 h |
| June | 26.5°C13.2°C | 13.2°C | 15 | 3.5 | 15.015 h |
| July | 30.4°C17.1°C | 17.1°C | 8.3 | 1.9 | 14.715 h |
| August | 30.5°C17.3°C | 17.3°C | 5.6 | 1.3 | 13.814 h |
| September, selected | 25.4°C12.8°C | 12.8°C | 8.4 | 1.6 | 12.512 h |
| October | 18.3°C6.8°C | 6.8°C | 16 | 3.9 | 11.211 h |
| November | 9.7°C-0.4°C | -0.4°C | 26 | 5.5 | 10.010 h |
| December | 3.8°C-4.9°C | -4.9°C | 29 | 6.0 | 9.49 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet 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
- Iğdır in SeptemberTurkey · 49 kmHigh 27.1°C · Low 14.3°C · 15 mm rain
- Vanadzor in SeptemberArmenia · 70 kmHigh 19.3°C · Low 10.2°C · 73 mm rain
- Doğubayazıt in SeptemberTurkey · 79 kmHigh 24.1°C · Low 12.1°C · 16 mm rain
- Gyumri in SeptemberArmenia · 89 kmHigh 20.9°C · Low 8.4°C · 28 mm rain
- Kars in SeptemberTurkey · 130 kmHigh 20.7°C · Low 7.7°C · 34 mm rain
- Naxçıvan in SeptemberAzerbaijan · 132 kmHigh 28.9°C · Low 15.8°C · 11 mm rain
- Ağrı in SeptemberTurkey · 136 kmHigh 23.3°C · Low 9.6°C · 18 mm rain
- Rustavi in SeptemberGeorgia · 159 kmHigh 26.0°C · Low 15.7°C · 21 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 Yerevan) is explained once on the Yerevan year overview and on the Sources, method and limits page.