Climate averages 1991–2020
Bolu weather
in June.
A warm, wet month: the 4th warmest and the joint 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
June is a warm month in Bolu: daytime highs average 22.8°C and nights cool to about 12.9°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 96 mm of rain on roughly 13 days, which makes June a wet month (the joint 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 02 min on an average June day.
The nearest other city in this atlas is Düzce (39 km away). In June its highs average 24.4°C, 1.6°C warmer than Bolu, with 100 mm of rain.
Among the 138 cities listed in Turkey, Bolu ranks joint 129th of 138 for the warmest June highs and 135th of 138 for the driest June (rainfall, lowest first). The mean June high of those 138 cities is 27.4°C; Bolu is 4.6°C cooler than that mean.
From June to July, average highs rise by 2.7°C to 25.5°C, and monthly rainfall falls from 96 mm to 50 mm.
The annual picture
June 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, selected | 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 | 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
June in nearby cities
- Düzce in JuneTurkey · 39 kmHigh 24.4°C · Low 14.8°C · 100 mm rain
- Ereğli (Zonguldak Province), Turkey in JuneTurkey · 63 kmHigh 22.8°C · Low 17.4°C · 63 mm rain
- Zonguldak in JuneTurkey · 81 kmHigh 23.9°C · Low 17.0°C · 50 mm rain
- Karabük in JuneTurkey · 100 kmHigh 25.2°C · Low 14.8°C · 74 mm rain
- Adapazarı in JuneTurkey · 101 kmHigh 25.2°C · Low 15.1°C · 69 mm rain
- Bartın in JuneTurkey · 117 kmHigh 24.1°C · Low 16.0°C · 51 mm rain
- Polatlı in JuneTurkey · 137 kmHigh 27.1°C · Low 13.9°C · 25 mm rain
- Ankara in JuneTurkey · 139 kmHigh 26.8°C · Low 14.3°C · 29 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.