Climate averages 1991–2020
Kostroma weather
in August.
A mild, moderately wet month: the 2nd warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a mild month in Kostroma: daytime highs average 20.2°C and nights cool to about 12.9°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 70 mm of rain on roughly 12 days, which makes August a moderately wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 19 min on an average August day.
The nearest other city in this atlas is Yaroslavl (64 km away). In August its highs average 20.5°C, about as warm as Kostroma, with 72 mm of rain.
Among the 236 cities listed in Russia, Kostroma ranks joint 192nd of 236 for the warmest August highs and joint 152nd of 236 for the driest August (rainfall, lowest first). The mean August high of those 236 cities is 22.4°C; Kostroma is 2.2°C cooler than that mean.
From August to September, average highs fall by 5.9°C to 14.4°C, and monthly rainfall falls from 70 mm to 65 mm.
The annual picture
August 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
Kostroma climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -6.5°C-11.3°C | -11.3°C | 41 | 11.2 | 7.37 h |
| February | -5.9°C-11.3°C | -11.3°C | 31 | 8.6 | 9.39 h |
| March | -0.4°C-6.9°C | -6.9°C | 35 | 9.2 | 11.812 h |
| April | 8.3°C-0.6°C | -0.6°C | 40 | 9.2 | 14.314 h |
| May | 16.1°C6.9°C | 6.9°C | 58 | 11.1 | 16.617 h |
| June | 20.1°C11.9°C | 11.9°C | 75 | 11.8 | 18.018 h |
| July | 22.5°C14.8°C | 14.8°C | 73 | 12.5 | 17.417 h |
| August, selected | 20.2°C12.9°C | 12.9°C | 70 | 12.0 | 15.315 h |
| September | 14.4°C8.1°C | 8.1°C | 65 | 11.0 | 12.913 h |
| October | 6.8°C2.2°C | 2.2°C | 65 | 12.1 | 10.410 h |
| November | -0.5°C-4.1°C | -4.1°C | 50 | 10.8 | 8.08 h |
| December | -4.4°C-8.7°C | -8.7°C | 42 | 10.4 | 6.77 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
August in nearby cities
- Yaroslavl in AugustRussia · 64 kmHigh 20.5°C · Low 12.9°C · 72 mm rain
- Kineshma in AugustRussia · 80 kmHigh 20.4°C · Low 13.3°C · 69 mm rain
- Ivanovo in AugustRussia · 85 kmHigh 20.7°C · Low 12.9°C · 70 mm rain
- Rybinsk in AugustRussia · 127 kmHigh 20.1°C · Low 13.5°C · 79 mm rain
- Kovrov in AugustRussia · 158 kmHigh 21.1°C · Low 13.3°C · 64 mm rain
- Vologda in AugustRussia · 173 kmHigh 19.4°C · Low 12.1°C · 77 mm rain
- Vladimir in AugustRussia · 184 kmHigh 21.2°C · Low 13.3°C · 65 mm rain
- Dzerzhinsk in AugustRussia · 228 kmHigh 21.3°C · Low 13.6°C · 66 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 Kostroma) is explained once on the Kostroma year overview and on the Sources, method and limits page.