Yalova has a typical transitional climate as it is located in the Marmara Region, where there is a transition between the Mediterranean climate and the Black Sea climate. This results in Yalova's climatic characteristics being characterized by both hot and humid summers and mild and rainy winters. The climate directly affects the way of life and economic activities in the region, playing a particularly large role in agriculture and tourism.
The summer months are usually hot and humid. Temperatures can reach up to 30°C in July and August. These temperatures can be sweltering at times, especially in a seaside city like Yalova. The high humidity makes the heat even more palpable, which can pose some health risks for the elderly and those with chronic conditions. However, this contributes to the city's thermal tourism, as many people choose Yalova for the relaxation and therapeutic properties of the thermal waters.
The winter months are mild and snowfall is rare. January is usually the coldest month, with temperatures ranging between 5°C and 10°C. The winter months in Yalova are also very rainy, which supports the development of local vegetation and agriculture. In addition, precipitation replenishes the city's water resources, which in turn cover most of the water needs.
Winds in Yalova generally blow from the north and northeast directions. North winds blowing in the winter months can bring cold waves of air. In summer, however, northerly winds have a mitigating effect on heat waves and help to reduce humidity. This variable nature of the wind is particularly important for activities linked to the sea; sectors such as fishing and sailing can be affected.
Humidity is high throughout the year and this can affect air quality, especially in summer. High humidity can lead to respiratory problems in some people and makes the weather more oppressive on extremely hot days. However, humidity can also be seen as an advantage for spa tourism because the positive effects on health are enhanced by the evaporation of thermal waters.
Overall, Yalova's climate is a determining factor in local life and economy. Seasonal norms have a wide range of impacts, from agricultural production to the quality of daily life and tourism.