Climate averages 1991–2020
Semey weather
in September.
A mild, fairly dry month: the 5th 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 mild month in Semey: daytime highs average 19.8°C and nights cool to about 8.4°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 20 mm of rain on roughly 5 days, which makes September a fairly dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 41 min on an average September day.
The nearest other city in this atlas is Rubtsovsk (139 km away). In September its highs average 18.4°C, 1.4°C cooler than Semey, with 32 mm of rain.
Among the 26 cities listed in Kazakhstan, Semey ranks 16th of 26 for the warmest September highs and joint 11th of 26 for the driest September (rainfall, lowest first). The mean September high of those 26 cities is 20.9°C; Semey is 1.2°C cooler than that mean.
From September to October, average highs fall by 8.6°C to 11.1°C, and monthly rainfall rises from 20 mm to 24 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
Semey climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -10.9°C-19.5°C | -19.5°C | 16 | 5.0 | 8.59 h |
| February | -7.8°C-17.4°C | -17.4°C | 17 | 4.6 | 10.010 h |
| March | 0.6°C-9.9°C | -9.9°C | 21 | 5.4 | 11.812 h |
| April | 13.6°C0.6°C | 0.6°C | 23 | 5.4 | 13.814 h |
| May | 21.5°C8.3°C | 8.3°C | 26 | 6.6 | 15.415 h |
| June | 27.0°C14.9°C | 14.9°C | 29 | 6.8 | 16.416 h |
| July | 28.2°C17.1°C | 17.1°C | 45 | 9.8 | 16.016 h |
| August | 26.5°C15.0°C | 15.0°C | 24 | 5.7 | 14.515 h |
| September, selected | 19.8°C8.4°C | 8.4°C | 20 | 5.1 | 12.713 h |
| October | 11.1°C1.4°C | 1.4°C | 24 | 6.0 | 10.811 h |
| November | -0.2°C-8.0°C | -8.0°C | 28 | 6.8 | 9.19 h |
| December | -7.6°C-15.7°C | -15.7°C | 22 | 7.0 | 8.18 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
- Rubtsovsk in SeptemberRussia · 139 kmHigh 18.4°C · Low 8.0°C · 32 mm rain
- Ust-Kamenogorsk in SeptemberKazakhstan · 175 kmHigh 19.4°C · Low 7.0°C · 37 mm rain
- Pavlodar in SeptemberKazakhstan · 307 kmHigh 17.9°C · Low 8.3°C · 26 mm rain
- Ekibastuz in SeptemberKazakhstan · 373 kmHigh 18.1°C · Low 8.2°C · 25 mm rain
- Barnaul in SeptemberRussia · 405 kmHigh 16.0°C · Low 6.8°C · 44 mm rain
- Biysk in SeptemberRussia · 415 kmHigh 17.3°C · Low 7.9°C · 49 mm rain
- Tacheng in SeptemberChina · 455 kmHigh 22.3°C · Low 9.3°C · 19 mm rain
- Karagandy in SeptemberKazakhstan · 514 kmHigh 18.0°C · Low 7.0°C · 22 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 Semey) is explained once on the Semey year overview and on the Sources, method and limits page.