Baking Through the Seasons

How Sourdough Changes Throughout the Year

One of the most fascinating things about sourdough is that it never behaves exactly the same way twice.

The starter sitting on your counter in July is technically the same starter you'll use in January, but it may act like a completely different creature. Temperature, humidity, flour storage conditions, and even the changing seasons can affect how your sourdough starter ferments and performs.

Understanding these seasonal changes can help you become a more confident baker and achieve more consistent results year-round.

 

 

Spring: The Season of Renewal

As temperatures begin to warm and daylight hours increase, many bakers notice their starters becoming more active.

Spring often provides ideal conditions for fermentation. Kitchens are generally warmer than winter but not yet as hot as summer, allowing wild yeast and beneficial bacteria to thrive.

During spring you may notice:

• Faster rise times
• More vigorous bubbling
• Increased starter activity between feedings
• Dough that ferments more predictably

This is a wonderful time to experiment with new recipes, specialty flours, and longer fermentation schedules.

Many bakers find that spring is when their starter seems happiest.

Summer: Fast and Active

Summer brings warmth, and sourdough loves warmth.

While this can be great for building a strong starter, it also means fermentation happens much faster than many recipes expect.

You may find that:

• Your starter doubles more quickly
• Dough reaches bulk fermentation sooner
• Proofing times are shorter
• Over-fermentation can happen if you're not paying attention

A recipe that takes six hours to ferment in winter might only need four hours during the hottest months.

Summer is often when new bakers learn an important sourdough lesson: watch the dough, not the clock.

If your kitchen regularly reaches higher temperatures, consider feeding your starter more frequently or storing it in a slightly cooler area to keep fermentation under control.

Fall: The Sweet Spot

Many experienced bakers consider fall the perfect sourdough season.

Temperatures begin cooling, humidity levels stabilize, and fermentation becomes easier to manage. Dough develops flavor beautifully without racing ahead too quickly.

Fall is also when baking naturally becomes more appealing.

As the weather cools, many people return to their kitchens to create:

• Artisan sourdough loaves
• Cinnamon raisin bread
• Pumpkin sourdough recipes
• Rustic dinner rolls
• Holiday baking preparations

There is something especially comforting about a warm loaf of bread on a crisp autumn afternoon.

Winter: Patience Required

Winter often teaches bakers their most valuable lesson: patience.

Cooler kitchens slow fermentation dramatically. A starter that doubles in four hours during summer may need eight, ten, or even twelve hours in winter.

Common winter observations include:

• Slower starter growth
• Longer proofing times
• Reduced bubbling
• Delayed fermentation activity

This doesn't mean your starter is unhealthy.

It simply means the wild yeast is working more slowly.

Many bakers find success by placing their starter in a slightly warmer location, such as:

• Near a refrigerator
• On top of a microwave
• Inside an oven with only the light turned on
• Near a warm appliance

Small increases in temperature can make a significant difference.

Your Starter Has Its Own Rhythm

One of the beautiful things about sourdough is learning that it follows nature's schedule rather than ours.

Commercial yeast is designed for speed and consistency. Sourdough is different. It responds to the environment around it, adapting to changing temperatures and conditions throughout the year.

By paying attention to seasonal changes, you'll begin to understand your starter better and develop a stronger connection to the baking process itself.

The seasons may change, but the reward remains the same: a homemade loaf of bread crafted with patience, care, and a living starter that has been part of the journey every step of the way.

Happy Baking All Year Long

Whether you're baking during the heat of summer, the cool days of autumn, the chill of winter, or the fresh warmth of spring, your sourdough starter is constantly adapting alongside you.

The more you observe and learn from these seasonal shifts, the better baker you'll become.

After all, great sourdough isn't about perfection—it's about understanding the process, enjoying the journey, and embracing the rhythm of the seasons.