Advanced Techniques
Seasonal Sourdough: Adapting Your Technique Year-Round
Temperature, humidity, and seasonal change quietly rewrite your recipe. Here's how to keep up.
Sourdough is connected to the natural world. Understanding how seasons affect your starter, dough, and bake helps you stay consistent year-round.
Spring
Rising temperatures, variable humidity, renewed yeast activity. Starter is more active and may need less frequent feeding. Reduce fermentation times as activity increases. Spring is ideal for establishing new baking routines.
Summer
High temperatures, often high humidity, peak activity. Starter may double in 2–4 hours. Use cooler water. Reduce starter percentage. Shorten bulk fermentation. Consider overnight refrigeration for the final proof. In extreme heat: ice the water, time mixing for cooler hours, use the fridge for controlled fermentation.
Fall
Cooling temperatures, slowing fermentation, predictable timing, excellent flavor development. Gradually increase fermentation times. Perfect season for longer, complex breads. Fresh flour from new harvests is a bonus.
Winter
Cold temperatures, low humidity, slow fermentation. Sluggish starter activity, sometimes 12+ hours to peak. Find warm spots — near a heater, oven light, or warm-water bath. Increase starter percentage. Use warmer mixing water. Longer bulk and proofing.
Humidity matters
High humidity — Flour absorbs moisture from the air. Reduce water. Expect stickier dough.
Low humidity — Flour gives up moisture. Increase hydration slightly. Cover dough to prevent skinning.
Target temperatures
- Starter maintenance: 70–75°F
- Dough fermentation: 75–80°F
- Final proofing: 75–85°F
Warm spots in the home
- Oven light (usually 80–85°F)
- Top of refrigerator
- Near (not on) heating vents
- Warm-water bath
- Proofing box or dehydrator on low
Seasonal recipe shifts
Summer — 10–15% starter, 65–70°F water, 3–4 hour bulk.
Winter — 25–30% starter, 80–85°F water, 8–12 hour bulk.
Successful year-round baking requires observation, adaptation, and patience. Keep notes about what works in different seasons — your local microclimate may behave differently from any guideline.