Biga experiences a mild climate with significant seasonal variations. Winters are cool, with temperatures ranging from around 0°C in January and February to slightly warmer days above 15°C in March. Spring brings rapid warming, with April and May enjoying average highs of 18-22°C, while summer months of June, July, and August are hot, peaking at an average high of 27-28°C. Autumn is mild, with September temperatures similar to spring's warmth, before cooling down again in October and November. Winter returns in December, with temperatures dipping back below 10°C on average.