Climate in Irkutsk: average temperature by month
In Irkutsk the warmest month is July, with 25.4 °C on average in the afternoon; the coolest is January, with -13.3 °C.
Measured at the weather station Irkutsk, 5 km away.
| Month | Average high | Coolest to warmest day |
|---|---|---|
| January | -13.3 °C | -13.8 °C – -12.2 °C |
| February | -8.3 °C | -11.9 °C – -4.0 °C |
| March | 1.1 °C | -3.5 °C – 6.0 °C |
| April | 9.8 °C | 6.2 °C – 14.6 °C |
| May | 17.7 °C | 14.9 °C – 20.6 °C |
| June | 23.6 °C | 20.7 °C – 25.3 °C |
| July | 25.4 °C | 25.1 °C – 25.6 °C |
| August | 22.7 °C | 19.9 °C – 25.0 °C |
| September | 16.0 °C | 11.6 °C – 19.7 °C |
| October | 7.7 °C | 3.3 °C – 11.1 °C |
| November | -3.4 °C | -8.0 °C – 3.0 °C |
| December | -11.5 °C | -13.4 °C – -8.5 °C |