Climate averages 1991–2020
Kastamonu weather
in December.
A cold, moderately wet month: the 10th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in Kastamonu: daytime highs average 5.6°C and nights cool to about -1.7°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 59 mm of rain on roughly 11 days, which makes December a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 15 min on an average December day.
The nearest other city in this atlas is Çankırı (88 km away). In December its highs average 6.5°C, 1.0°C warmer than Kastamonu, with 49 mm of rain.
Among the 138 cities listed in Turkey, Kastamonu ranks joint 120th of 138 for the warmest December highs and joint 32nd of 138 for the driest December (rainfall, lowest first). The mean December high of those 138 cities is 9.3°C; Kastamonu is 3.7°C cooler than that mean.
From December to January, average highs fall by 2.1°C to 3.4°C, and monthly rainfall falls from 59 mm to 51 mm.
The annual picture
December 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 | 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, selected | 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
December in nearby cities
- Çankırı in DecemberTurkey · 88 kmHigh 6.5°C · Low -0.7°C · 49 mm rain
- Karabük in DecemberTurkey · 98 kmHigh 9.1°C · Low 0.6°C · 79 mm rain
- Bartın in DecemberTurkey · 123 kmHigh 10.4°C · Low 3.7°C · 90 mm rain
- Çorum in DecemberTurkey · 135 kmHigh 6.6°C · Low -0.7°C · 59 mm rain
- Zonguldak in DecemberTurkey · 165 kmHigh 10.7°C · Low 4.7°C · 107 mm rain
- Kırıkkale in DecemberTurkey · 172 kmHigh 7.6°C · Low -0.1°C · 48 mm rain
- Bafra in DecemberTurkey · 179 kmHigh 10.7°C · Low 5.5°C · 82 mm rain
- Ankara in DecemberTurkey · 180 kmHigh 7.3°C · Low -0.3°C · 53 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.