Why Is My Sourdough Not Rising? 7 Common Causes and Fixes

If your sourdough bread isn’t rising, do not immediately assume that the whole batch has failed. In many cases, the problem comes from starter strength, dough temperature, fermentation, hydration, gluten development or proofing.

Sourdough can be confusing because several things are happening at the same time. A dough that rises well in one kitchen may behave differently in another because the flour, temperature, water, starter and fermentation time are not exactly the same.

This is especially noticeable in Indian kitchens. Warm weather can speed up fermentation, while cooler months or an air-conditioned room can slow it down. That is why learning to read the dough is usually more useful than following only a fixed number of hours.

In this guide, we will look at seven common reasons sourdough does not rise properly and what you can check before changing your entire recipe.

1. Your Sourdough Starter Is Not Active Enough

A weak or inactive starter is one of the most common reasons sourdough bread does not rise.

Your starter contains the microorganisms responsible for fermentation. If the starter is weak, the dough may take a very long time to rise or show very little visible fermentation.

How to Know If Your Sourdough Starter Is Active

An active starter will usually show several signs after feeding:

• Regular bubbles throughout the starter
• Visible increase in volume
• A reasonably predictable rise after feeding
• A fresh, fermented or mildly tangy smell
• Clear signs of activity instead of remaining completely flat

Do not worry if your starter does not match somebody else’s exact timing. Starter activity can change according to the flour, feeding ratio, room temperature and how established the starter is.

Why Is My Sourdough Starter Not Rising?

A sourdough starter may remain weak when:

• The starter is still young
• The room temperature is too low
• It has not been fed regularly
• The feeding ratio has changed significantly
• You changed the flour or water
• The starter was left inactive for a long period

2. Your Dough Temperature Is Too Low

Sourdough fermentation slows down when the dough is cold.

In Bangalore, this can happen during cooler weather, rainy periods or when the dough is kept for several hours in an air-conditioned room. The starter may be healthy, but the dough can still appear heavy because fermentation is moving slowly.

What You Can Do

• Keep the dough in a comfortably warm place.
• Avoid exposing the dough directly to excessive heat.
• Use water temperature to help manage final dough temperature.
• Watch the dough for fermentation signs instead of only watching the clock.

Many bakers work with dough temperatures somewhere in the mid-20°C range, but there is no single temperature that suits every formula. Flour, starter, hydration and fermentation plan all matter.

3. Your Sourdough Hydration Does Not Suit the Dough

Hydration has a major effect on how sourdough feels, ferments and holds its shape.

What Is Sourdough Hydration?

Hydration is the amount of water in the dough compared with the amount of flour.

For example:

700 g water ÷ 1,000 g flour × 100 = 70% hydration

There is no one hydration percentage that works for every sourdough bread. Different flours absorb water differently.

Higher Hydration Dough

• Feels softer and stickier
• May spread more easily
• Needs good gluten strength
• Can be difficult for beginners to handle

Lower Hydration Dough

• Feels firmer
• Can be easier to handle and shape
• May produce a tighter crumb depending on the formula

Instead of copying a hydration number from another recipe, look at how your own flour behaves. Indian wheat flours, bread flours and stone-ground flours can behave quite differently with the same amount of water.

4. Gluten Development Is Too Weak

Fermentation creates gas, but the dough still needs enough structure to hold that gas.

If gluten development is weak, the dough may ferment but spread sideways instead of rising properly.

How to Improve Gluten Development

• Mix the dough properly at the beginning.
• Use stretch-and-fold or coil-fold methods when appropriate.
• Give the dough enough rest between folds.
• Avoid unnecessarily rough handling.
• Use flour suitable for the bread you are making.

As the dough develops strength, it normally becomes smoother, more elastic and better able to hold its shape.

If you want to understand dough structure, yeast-based breads and bread-making fundamentals in more depth, you can also read about our Bread Baking Fundamentals course .

5. Your Sourdough Is Underproofed

Underproofed sourdough has not fermented enough before baking.

Common signs can include:

• Limited increase in dough volume
• A dense or tight crumb
• Dough that still feels heavy
• Very few visible fermentation bubbles
• Poor expansion during baking

If the dough is genuinely underproofed, it usually needs more fermentation under suitable conditions.

Do not judge proofing only by time. Look at the dough volume, bubbles, strength, temperature and overall fermentation activity together.

6. Your Sourdough Is Overproofed

More fermentation is not always better. Sourdough can also lose its ability to rise when it ferments for too long.

Signs of overproofing may include:

• Very soft or loose dough
• Dough spreading during shaping
• Weak structure
• Difficulty creating surface tension
• Reduced oven spring
• Dough that collapses easily

Overproofing happens when fermentation progresses beyond the point where the dough can hold its structure properly.

This is why experienced sourdough bakers watch the dough rather than simply deciding that every loaf needs exactly the same fermentation time.

7. Flour, Salt and Fermentation Conditions Are Affecting the Rise

Sometimes there is no single major mistake. Several smaller factors may be working together.

Flour

Different flours absorb different amounts of water and develop different levels of gluten strength.

Bread flour can provide good structure for many sourdough loaves, while wholegrain and stone-ground flours may absorb more water and behave differently during fermentation.

Salt

Salt is important for flavour and dough structure. However, excessive salt can slow fermentation.

Use a tested formula rather than adding salt approximately.

Fermentation Conditions

Sourdough fermentation changes according to:

• Starter quantity
• Starter strength
• Room temperature
• Dough temperature
• Flour type
• Hydration
• Bulk fermentation time

Sourdough Not Rising During Bulk Fermentation

If your sourdough is not rising during bulk fermentation, first check your starter and dough temperature.

A healthy starter can still ferment slowly when the dough is too cool. At the same time, a warm dough can move much faster than expected.

During bulk fermentation, look for:

• An increase in dough volume
• Bubbles along the sides or surface
• A lighter and more aerated feel
• Improved elasticity
• Increasing dough strength

If these signs are developing slowly, the dough may simply need more time. If there is almost no activity, investigate starter strength and temperature before extending fermentation indefinitely.

Why Is My Sourdough Bread Dense?

Dense sourdough usually means the dough did not create enough gas or was not able to hold the gas properly before baking.

Common causes include:

• Weak sourdough starter
• Short bulk fermentation
• Weak gluten development
• Low dough temperature
• Underproofing
• Overproofing
• Flour and hydration that do not work well together

A dense loaf is therefore not always caused by one mistake. Check starter activity, fermentation and dough structure together.

Why Is My Sourdough Dough Too Sticky?

Sticky sourdough does not automatically mean something has gone wrong.

Higher-hydration dough naturally feels softer and stickier. However, dough can become particularly difficult to handle when:

• Hydration is too high for the flour
• Gluten development is weak
• The dough is too warm
• Fermentation has gone too far
• The flour does not absorb enough water for the formula

Before adding a large amount of extra flour, check whether the dough needs more strength, rest or temperature control.

Why Does My Sourdough Have Poor Oven Spring?

Oven spring is the expansion that happens during the early stage of baking.

Poor oven spring may be linked to:

• Underproofing
• Overproofing
• Weak gluten structure
• Poor shaping
• Incorrect scoring
• Insufficient oven heat
• Insufficient steam during the early part of baking

Good oven spring starts long before the loaf goes into the oven. Starter strength, fermentation, dough structure and shaping all contribute.

Sourdough Not Rising: Quick Troubleshooting Guide

Sourdough Fermentation in Bangalore and Indian Weather

Indian weather makes sourdough especially interesting because room temperature can change considerably between seasons and even between different kitchens.

In a warm kitchen, fermentation may move faster than the timing mentioned in a recipe written for a cooler country. During Bangalore’s cooler or rainy periods, or inside an air-conditioned home, the same dough may take longer.

Instead of following only the clock, observe:

• Dough volume
• Visible bubbles
• Dough strength
• Surface texture
• Dough temperature
• How the dough feels during handling

These signs give you a better idea of whether fermentation is moving slowly, normally or too quickly.

Continue Learning Bread-Making Techniques

If sourdough is your starting point and you want to build broader bread-making skills, Celesteyum Academy also offers:

• Bread Baking Fundamentals for learners who want a stronger foundation in bread-making techniques.
• Artisan Breads for learners interested in a wider range of handcrafted breads.

Frequently Asked Questions About Sourdough Not Rising

Fix Sourdough Problems by Learning to Read the Dough

When sourdough bread isn’t rising, resist the temptation to change everything at once.

Start with the basics: check your starter, dough temperature, hydration, gluten strength and fermentation progress. Once you identify where the process is slowing down or losing structure, the solution becomes much clearer.

Sourdough becomes easier with practice because you gradually learn what healthy fermentation looks, feels and smells like. The clock is useful, but the dough gives you more information.

If you prefer to learn these techniques through practical guidance, explore the Sourdough Bread Class in Bangalore , view the current Sourdough Bread Class batch , or check the upcoming baking class schedule .