Climate averages 1991–2020
Kastamonu weather
in September.
A warm, fairly dry month: the 3rd 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 Kastamonu: daytime highs average 23.5°C and nights cool to about 11.9°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 33 mm of rain on roughly 7 days, which makes September a fairly dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 31 min on an average September day.
The nearest other city in this atlas is Çankırı (88 km away). In September its highs average 26.4°C, 2.9°C warmer than Kastamonu, with 15 mm of rain.
Among the 138 cities listed in Turkey, Kastamonu ranks joint 122nd of 138 for the warmest September highs and joint 95th of 138 for the driest September (rainfall, lowest first). The mean September high of those 138 cities is 27.1°C; Kastamonu is 3.6°C cooler than that mean.
From September to October, average highs fall by 5.4°C to 18.1°C, and monthly rainfall rises from 33 mm to 51 mm.
The annual picture
September in context
Monthly rainfall
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
Kastamonu climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 3.4°C-3.7°C | -3.7°C | 51 | 11.0 | 9.610 h |
| February | 5.2°C-3.1°C | -3.1°C | 53 | 11.1 | 10.611 h |
| March | 9.3°C-0.3°C | -0.3°C | 65 | 12.3 | 11.912 h |
| April | 15.0°C4.1°C | 4.1°C | 64 | 13.0 | 13.313 h |
| May | 19.7°C8.8°C | 8.8°C | 72 | 13.5 | 14.514 h |
| June | 23.2°C12.5°C | 12.5°C | 58 | 11.7 | 15.115 h |
| July | 26.7°C14.8°C | 14.8°C | 30 | 6.0 | 14.815 h |
| August | 27.3°C15.2°C | 15.2°C | 24 | 5.7 | 13.814 h |
| September, selected | 23.5°C11.9°C | 11.9°C | 33 | 7.0 | 12.513 h |
| October | 18.1°C8.0°C | 8.0°C | 51 | 8.4 | 11.111 h |
| November | 11.3°C2.1°C | 2.1°C | 44 | 8.0 | 9.910 h |
| December | 5.6°C-1.7°C | -1.7°C | 59 | 10.7 | 9.29 h |
Rainfall is the average of the 30 separate monthly totals. A rain 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
- Çankırı in SeptemberTurkey · 88 kmHigh 26.4°C · Low 12.7°C · 15 mm rain
- Karabük in SeptemberTurkey · 98 kmHigh 25.4°C · Low 14.1°C · 47 mm rain
- Bartın in SeptemberTurkey · 123 kmHigh 23.8°C · Low 16.0°C · 77 mm rain
- Çorum in SeptemberTurkey · 135 kmHigh 25.1°C · Low 13.2°C · 29 mm rain
- Zonguldak in SeptemberTurkey · 165 kmHigh 23.8°C · Low 17.0°C · 82 mm rain
- Kırıkkale in SeptemberTurkey · 172 kmHigh 27.4°C · Low 14.2°C · 10 mm rain
- Bafra in SeptemberTurkey · 179 kmHigh 23.2°C · Low 17.4°C · 51 mm rain
- Ankara in SeptemberTurkey · 180 kmHigh 26.5°C · Low 13.9°C · 13 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 Kastamonu) is explained once on the Kastamonu year overview and on the Sources, method and limits page.