Climate averages 1991–2020
Bolu weather
in July.
A warm, moderately wet month: the 2nd warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a warm month in Bolu: daytime highs average 25.5°C and nights cool to about 15.0°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 50 mm of rain on roughly 9 days, which makes July a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 14 h 47 min on an average July day.
The nearest other city in this atlas is Düzce (39 km away). In July its highs average 26.5°C, 1.0°C warmer than Bolu, with 50 mm of rain.
Among the 138 cities listed in Turkey, Bolu ranks 130th of 138 for the warmest July highs and joint 132nd of 138 for the driest July (rainfall, lowest first). The mean July high of those 138 cities is 30.9°C; Bolu is 5.4°C cooler than that mean.
From July to August, average highs rise by 0.8°C to 26.3°C, and monthly rainfall rises from 50 mm to 52 mm.
The annual picture
July 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, selected | 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 | 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
July in nearby cities
- Düzce in JulyTurkey · 39 kmHigh 26.5°C · Low 16.9°C · 50 mm rain
- Ereğli (Zonguldak Province), Turkey in JulyTurkey · 63 kmHigh 25.3°C · Low 19.9°C · 47 mm rain
- Zonguldak in JulyTurkey · 81 kmHigh 26.4°C · Low 19.5°C · 42 mm rain
- Karabük in JulyTurkey · 100 kmHigh 28.2°C · Low 17.4°C · 40 mm rain
- Adapazarı in JulyTurkey · 101 kmHigh 27.2°C · Low 17.7°C · 38 mm rain
- Bartın in JulyTurkey · 117 kmHigh 26.6°C · Low 18.5°C · 45 mm rain
- Polatlı in JulyTurkey · 137 kmHigh 31.2°C · Low 16.8°C · 7.2 mm rain
- Ankara in JulyTurkey · 139 kmHigh 31.0°C · Low 17.0°C · 8.5 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.