Kostroma in September
6.4out of 10
Possible, with caveats
Cool: highs only around 15°C. Frequent rain: about 12 rainy days.
15°CAvg high
6°CAvg low
12Rainy days (65 mm)
12:28 hDaylight
05:57Sunrise · 18:25 Sunset
Why this score
- Cool: highs only around 15°C
- Frequent rain: about 12 rainy days
What to wear and pack
- Layers you can add or remove
- Rain jacket or compact umbrella
How reliable is the forecast?
Rainfall in September is fairly consistent from year to year (3.0 days). Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | -6°C | -12°C | 41 mm | 11 | – | – | 3.6 |
| February | -5°C | -12°C | 31 mm | 9 | – | – | 3.9 |
| March | 1°C | -7°C | 35 mm | 9 | – | – | 3.9 |
| April | 9°C | 0°C | 40 mm | 9 | – | – | 5.7 |
| May | 17°C | 6°C | 58 mm | 11 | – | – | 6.8 |
| June | 21°C | 10°C | 75 mm | 12 | – | – | 7.3 |
| July | 23°C | 13°C | 73 mm | 13 | – | – | 7.4 |
| August | 21°C | 11°C | 70 mm | 12 | – | – | 7.3 |
| September | 15°C | 6°C | 65 mm | 12 | – | – | 6.4 |
| October | 7°C | 1°C | 65 mm | 12 | – | – | 5.0 |
| November | 0°C | -5°C | 50 mm | 11 | – | – | 3.7 |
| December | -4°C | -9°C | 42 mm | 11 | – | – | 3.7 |
Frequently asked questions
How hot is Kostroma in September?
Daytime highs average 15°C and nights about 6°C.
When is the best time to visit Kostroma?
The best months are July, June, August.