ClimateForecastDecemberJanuary >>

Bolu Climate by Month

The climate in Bolu is marked by big temperature swings throughout the year. Temperatures range from warm during the warmest months to cold in the cooler months. It is also known for its large amounts of rain/snowfall. Let’s explore the climate details in depth to provide you with a complete overview.

Average day and night temperature

In Bolu, temperatures differ significantly between summer and winter months. Typically, daytime temperatures range from a comfortable 26°C in August to a chilly 4°C in the coolest month, January. Nights are cooler, with temperatures generally dropping to -4°C, particularly during the colder months.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Bolu experiences significant rain/snowfall throughout the year, averaging 1065 mm of precipitation annually. The climate in Bolu shows significant variation throughout the year. Expect high rainfall in May, with an average of 118 mm of precipitation over 14 rainy days.

In contrast, July offers drier and sunnier days, with around 52 mm of rainfall over 6 rainy days.

The mean monthly precipitation over the year, including rain, hail and snow

The best time of year to visit Bolu in Turkey

During the months of June, July, August and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Which is the warmest month in Bolu?
    August has an average maximum temperature of 26°C and is the warmest month of the year.
  • Which is the coldest month in Bolu?
    The coldest month is January with an average maximum temperature of 4°C.
  • Which is the wettest month in Bolu?
    May tops the wettest month list with 118 mm of rainfall.
  • Which is the driest month in Bolu?
    July is the driest month with 52 mm of precipitation.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Bolu

    Wed   Dec 11
    14°C | 5°C
    W 4 km/h
    2.5 mm
    overcast and rain

    overcast and rain

    Thu   Dec 12
    6°C | 2°C
    W 4 km/h
    11 mm
    overcast and heavy rain

    overcast and heavy rain

    Fri   Dec 13
    3°C | 0°C
    NW 4 km/h
    5.7 mm
    overcast and sleet

    overcast and sleet