What temperature should I store my kombucha at during fermentation? Keeping your brew between 24 – 30°C (75 – 86°F) is important as it maintains the perfect balance of yeast to bacteria. Related articles What if my fermenting temperature is too low? What if my fermenting temperature is too high? How do I store the scoby's when not in use? What if I add my scoby and starter culture before the tea has cooled properly? What is the specifications of Plaato?