Climate averages 1991–2020
Bolu weather
in August.
A warm, moderately wet month: the warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Bolu: daytime highs average 26.3°C and nights cool to about 15.7°C. By daytime temperature it is the warmest month of the year.
Expect about 52 mm of rain on roughly 8 days, which makes August a moderately wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 48 min on an average August day.
The nearest other city in this atlas is Düzce (39 km away). In August its highs average 27.0°C, 0.6°C warmer than Bolu, with 53 mm of rain.
Among the 138 cities listed in Turkey, Bolu ranks 130th of 138 for the warmest August highs and joint 132nd of 138 for the driest August (rainfall, lowest first). The mean August high of those 138 cities is 31.1°C; Bolu is 4.8°C cooler than that mean.
From August to September, average highs fall by 3.2°C to 23.1°C, and monthly rainfall rises from 52 mm to 66 mm.
The annual picture
August 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, selected | 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 | 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
August in nearby cities
- Düzce in AugustTurkey · 39 kmHigh 27.0°C · Low 17.5°C · 53 mm rain
- Ereğli (Zonguldak Province), Turkey in AugustTurkey · 63 kmHigh 25.8°C · Low 20.6°C · 52 mm rain
- Zonguldak in AugustTurkey · 81 kmHigh 27.0°C · Low 20.2°C · 50 mm rain
- Karabük in AugustTurkey · 100 kmHigh 29.2°C · Low 18.1°C · 35 mm rain
- Adapazarı in AugustTurkey · 101 kmHigh 27.6°C · Low 18.4°C · 39 mm rain
- Bartın in AugustTurkey · 117 kmHigh 27.1°C · Low 19.2°C · 45 mm rain
- Polatlı in AugustTurkey · 137 kmHigh 31.1°C · Low 17.0°C · 6.5 mm rain
- Ankara in AugustTurkey · 139 kmHigh 31.1°C · Low 17.4°C · 9.4 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.