Bolu weather in June
In June, Bolu has daytime highs averaging 23 °C, nights around 13 °C, with 13 wet days. Figures are 1991–2020 climate normals.
- 22.8°C Average high
- 12.7°C Average low
- 13days Wet days
- 93mm Rainfall
- 15h Daylight
Daily temperatures through June
How June develops
Averages for the first, middle and last part of the month, from daily 1991–2020 normals. Chance of rain is the share of years in which that calendar day recorded more than 1 mm.
| Days | Avg high | Avg low | Chance of rain |
|---|---|---|---|
| 1–10 June | 21.5 °C | 11.5 °C | 51 % |
| 11–20 June | 22.9 °C | 12.9 °C | 43 % |
| 21–30 June | 23.7 °C | 13.5 °C | 36 % |
- Average highs rise from 21.5 °C early in June to 23.7 °C by the end of it.
- Rain is most likely over days 1–10 of June (51 % of days) and least likely over days 21–30 (36 %).
What to expect
| Measure | Typical June | Share of the month |
|---|---|---|
| Days above 25 °C | 7.9 of 30 | 26 % |
| Days above 30 °C | 0.6 of 30 | 2 % |
| Days below 0 °C | 0 of 30 | 0 % |
| Days with more than 1 mm rain | 13 of 30 | 43 % |
Conditions in June
| Measure | Average |
|---|---|
| Mean temperature | 18 °C |
| Record high (1991–2020) | 33 °C |
| Record low (1991–2020) | 4.2 °C |
| Relative humidity | 80 % |
| Wind speed | 9.8 km/h |
| Cloud cover | 49 % |
Where Bolu ranks in June
| Ranking | Position | Value |
|---|---|---|
| The coolest places in Asia in June | 45thof 50 | 23 °C |
June compared with the months around it
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| April | 15.2 °C | 97 mm | 62 % |
| May | 19.7 °C | 104 mm | 58 % |
| June | 22.8 °C | 93 mm | 49 % |
| July | 25.5 °C | 47 mm | 40 % |
| August | 26.4 °C | 50 mm | 39 % |
See all twelve months for Bolu
- June is the 4th warmest month here.
- It is the 9th driest month of the year.
- It ranks 4th for least cloud cover.
- Days last about 15 hours from sunrise to sunset.
- It rains on 13 of 30 days — 43 % of the month.
- Nights are about 10 °C cooler than the middle of the day.
- The hottest June day on record since 1991 reached 33 °C, 10 °C above the usual daytime high.
Nearby destinations in June
| Destination | Avg high | Wet days | Sea |
|---|---|---|---|
| Bolu | 23 °C | 13 | – |
| Düzce | 25 °C | 12 | – |
| Adapazarı | 25 °C | 10 | – |
| Ankara | 27 °C | 6 | – |
| Eskişehir | 25 °C | 7 | – |
| İzmit | 26 °C | 10 | – |
| Gölbaşı | 26 °C | 7 | – |
| Gebze | 25 °C | 7 | 21 |
| Kırıkkale | 28 °C | 6 | – |
QuestionsJune in Bolu, answered
How warm is Bolu in June?
Daily highs average 23 °C and nights fall to about 13 °C, a spread of 10 °C between afternoon and dawn. That makes June the 3rd warmest month of the year here.
Does it rain much in Bolu in June?
June averages 93 mm of rain, spread over about 13 of the 30 days — 43 % of the month. Cloud cover averages 49 % of the sky.
How long are the days in June?
Bolu averages 15 hours between sunrise and sunset in June. Day length is computed from latitude and date, so it is exact rather than modelled — but it says nothing about how much of that time is sunny.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- Normal period
- 1991–2020
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: daylight hours, beach and comfort scores, monthly rankings, threshold day counts, chance of a wet day by date, ten-day averages within the month. Full formulas are on the methodology page.
Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.