Climate averages 1991–2020
Bolu weather
in October.
A mild, wet month: the 6th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a mild month in Bolu: daytime highs average 18.4°C and nights cool to about 8.5°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 90 mm of rain on roughly 11 days, which makes October a wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 09 min on an average October day.
The nearest other city in this atlas is Düzce (39 km away). In October its highs average 20.0°C, 1.6°C warmer than Bolu, with 98 mm of rain.
Among the 138 cities listed in Turkey, Bolu ranks joint 123rd of 138 for the warmest October highs and joint 125th of 138 for the driest October (rainfall, lowest first). The mean October high of those 138 cities is 21.4°C; Bolu is 3.0°C cooler than that mean.
From October to November, average highs fall by 6.1°C to 12.3°C, and monthly rainfall falls from 90 mm to 75 mm.
The annual picture
October 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
Bolu climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.7°C-2.9°C | -2.9°C | 91 | 13.9 | 9.610 h |
| February | 6.0°C-2.5°C | -2.5°C | 89 | 13.8 | 10.611 h |
| March | 9.9°C0.3°C | 0.3°C | 107 | 14.9 | 11.912 h |
| April | 15.3°C4.4°C | 4.4°C | 99 | 14.4 | 13.313 h |
| May | 19.8°C9.2°C | 9.2°C | 110 | 15.7 | 14.414 h |
| June | 22.8°C12.9°C | 12.9°C | 96 | 13.2 | 15.015 h |
| July | 25.5°C15.0°C | 15.0°C | 50 | 8.7 | 14.815 h |
| August | 26.3°C15.7°C | 15.7°C | 52 | 8.4 | 13.814 h |
| September | 23.1°C12.4°C | 12.4°C | 66 | 8.7 | 12.513 h |
| October, selected | 18.4°C8.5°C | 8.5°C | 90 | 10.9 | 11.211 h |
| November | 12.3°C2.8°C | 2.8°C | 75 | 10.2 | 10.010 h |
| December | 6.7°C-1.0°C | -1.0°C | 96 | 13.7 | 9.39 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
October in nearby cities
- Düzce in OctoberTurkey · 39 kmHigh 20.0°C · Low 10.7°C · 98 mm rain
- Ereğli (Zonguldak Province), Turkey in OctoberTurkey · 63 kmHigh 18.9°C · Low 14.0°C · 100 mm rain
- Zonguldak in OctoberTurkey · 81 kmHigh 19.7°C · Low 13.3°C · 101 mm rain
- Karabük in OctoberTurkey · 100 kmHigh 20.5°C · Low 10.0°C · 66 mm rain
- Adapazarı in OctoberTurkey · 101 kmHigh 19.9°C · Low 11.0°C · 84 mm rain
- Bartın in OctoberTurkey · 117 kmHigh 19.7°C · Low 12.4°C · 91 mm rain
- Polatlı in OctoberTurkey · 137 kmHigh 20.0°C · Low 7.6°C · 25 mm rain
- Ankara in OctoberTurkey · 139 kmHigh 20.3°C · Low 9.5°C · 28 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 Bolu) is explained once on the Bolu year overview and on the Sources, method and limits page.