How Long Sourdough Takes to Rise

Baking Resources Editorial · Reviewed by Joan Ramos · Updated October 13, 2026 · 17 min read

How long sourdough takes to rise depends almost entirely on temperature: 4 to 5 hours of bulk fermentation at 78°F with 20 percent ripe starter, or 8 to 12 hours at 63°F for the same dough. After shaping, add 45 minutes to 2 hours at room temperature, or 8 to 16 hours in the refrigerator.

Sourdough has three separate rises, not one, and mixing them up is why so many timings on the internet disagree. Your starter rises, your dough bulk ferments, and your shaped loaf proofs. The chart below covers all three.

Want to hedge a slow sourdough with a pinch of commercial yeast, or convert the recipe to yeast for a same-day loaf? Our free yeast converter matches the yeast amount to the rise length you actually have time for.

The three rises, and how long each one takes

Add those up and a full sourdough day runs 8 to 12 hours of active fermentation from feeding the starter to the loaf going in the oven, or 5 to 6 hours plus an overnight in the refrigerator if you split it across two days.

That is the honest headline number, and it is why sourdough is a weekend habit for most people rather than a weeknight one.

How long sourdough takes to rise at each temperature

Temperature is the single biggest lever you have. Everything below assumes 20 percent ripe starter by flour weight, a standard 70 to 75 percent hydration dough, and bulk fermentation to a 50 to 75 percent rise.

As a rough working rule, every 15°F warmer roughly halves the time, and every 15°F cooler roughly doubles it. That single sentence lets you convert any recipe's timings to your own kitchen.

Two practical notes on that chart.

Dough temperature is not room temperature. Dough made with cold tap water in a 72°F kitchen can sit at 66°F for the first hour, which adds a full hour to the bulk. Take the dough's temperature with an instant read thermometer after mixing, and adjust your water temperature next time to hit your target.

Second, the rows toward the bottom are less forgiving. A cool dough gives you an hour of leeway either side. An 86°F dough gives you fifteen minutes, and the acid builds faster than the gas does, so you end up with a sour, slack dough that never got much lift.

How much starter you use changes everything

The second lever is the percentage of ripe starter, calculated against the flour weight in the dough. Everything below assumes a 78°F dough.

More starter is faster and less sour. Less starter is slower and more sour. That relationship surprises people who assume that a longer rise always means more tang, but the tang comes from the acid bacteria, and they need hours to work regardless of how many yeast cells you started with.

This is the same trade-off you make with commercial yeast, just at a different scale. Our pizza dough rise time guide runs the identical math with instant yeast, where 1 percent gives you a couple of hours and 0.08 percent gives you three days.

Do not trust the clock. Read the dough

Every time in this article is a starting estimate. The actual finish line is a set of physical signs, and once you learn them you stop needing the chart.

Bulk fermentation is done when the dough has risen 50 to 75 percent. Not doubled. Doubling was the old advice and it puts most home bakers into overproofed territory, because a dough at 100 percent has already spent most of its strength.

Here is how to measure that reliably:

1. Use a straight-sided container. A bowl that flares out makes a 50 percent rise look like 20 percent.
2. Mark the starting level with a rubber band or a strip of tape the moment bulk begins.
3. Or use an aliquot jar. Pinch off about 2 tablespoons of dough right after mixing, press it into a small straight-sided jar, mark the level, and keep it beside the main dough. It rises at the same rate and it is far easier to read.

Three other signs back up the measurement:

• The jiggle. Nudge the container. Ready dough moves as one wobbling mass, like a set custard.
• The dome. The surface goes from flat to gently domed, with a few bubbles visible at the edges of the container.
• The feel. The dough is airy and light rather than dense, and it pulls away from the sides in one piece rather than sticking in shreds.

If your dough is not moving at all, the problem is usually starter strength or temperature rather than time, and why your dough is not rising works through the causes in order.

The final proof: room temperature or refrigerator

After you shape the loaf, it rises again. You have two routes and they are not equivalent.

The cold retard is the reason so many home loaves look bakery-quality. Cold dough is firm, so it holds its shape when you turn it out and it takes a razor cleanly, which is most of what scoring bread is about. It also lets you bake at 7 a.m. without having been awake at 3.

The poke test decides it. Flour a finger and press about half an inch into the side of the loaf. If the dent springs back immediately, it needs more time. If it springs back slowly and leaves a shallow dent, bake it now. If it does not spring back at all, it is overproofed, so bake it immediately and accept a flatter loaf.

Bake straight from the refrigerator. There is no need to bring a cold loaf up to room temperature, and doing so costs you the firmness that made the retard worth it.

Worked example: a full sourdough timeline

Here is a 1,000 g dough in baker's percentages, with real clock times attached. Baker's percentages are all measured against flour weight, and our baker's percentage guide explains the system if it is new to you.

• Bread flour: 500 g (100 percent)
• Water: 350 g (70 percent)
• Ripe 100 percent hydration starter: 100 g (20 percent)
• Salt: 10 g (2 percent)

Counting the flour and water inside the starter, that is 550 g of total flour and 400 g of total water, so the true hydration is about 73 percent.

Total elapsed time from feeding the starter to a cooled loaf: about 26 hours, of which maybe 40 minutes is actual hands-on work. That is the real shape of sourdough. It is patient, not laborious.

Wait at least two hours before cutting into it, and preferably four. Slicing a hot sourdough gives you a gummy crumb every time, which is one of several causes covered in why bread turns out gummy.

Sourdough against commercial yeast, hour for hour

If you have swapped a yeast recipe for sourdough and the timings feel wrong, this is why. Sourdough carries far fewer yeast cells per gram of dough, and a slice of the fermentation goes into acid rather than gas.

So a 20 percent sourdough build runs on roughly the same clock as a slow yeasted dough, and about twice as long as a standard yeasted one. Substituting a starter into a yeast recipe means multiplying every rise time by about two, not following the original timings and hoping. Our guide to converting a yeast recipe to sourdough handles the flour and water the starter brings with it as well as the timing.

The same chart in Celsius

For bakers working in Celsius, here are the bulk fermentation windows from the temperature chart above, converted and rounded to the nearest degree. Same assumptions: 20 percent ripe starter and a 70 to 75 percent hydration dough.

The rule of thumb carries over too: roughly every 8°C warmer halves the time, and every 8°C cooler doubles it. Our temperature converter handles any other number you need.

How long a sourdough starter takes to rise after feeding

The first of the three rises is the one people skip past, and it sets the clock for everything after it. How fast a starter peaks depends on two things: the feeding ratio (starter to flour to water, by weight) and the temperature. A bigger feed means more fresh flour per yeast cell, so it takes longer to peak.

These are approximate windows for an established, regularly fed starter at 100 percent hydration. A young starter, a starter just out of the fridge, or one fed with a lot of whole grain flour will run off this chart, usually slower for the first two and faster for the third.

The starter is ready when it has at least doubled, the top is domed or just starting to flatten, and it smells pleasantly sour and yeasty rather than sharp like nail polish. Using it at that peak is the single biggest thing you can do to make the bulk times in this article come true. A stiff starter follows a different clock, and our stiff starter ratio guide has its own peak-time chart.

Room temperature or fridge: a side-by-side comparison

Both routes for the final proof make good bread. They just make different bread, on a different schedule.

If you are unsure, retard in the fridge. It is the more forgiving of the two and it fits around a normal day.

Letting sourdough rise overnight on the counter

You can run bulk fermentation overnight at room temperature, and many bakers do. The trick is to use less starter so the dough does not race past its window while you are asleep. Aim for a bulk that will take about 9 to 11 hours, and adjust the starter to your kitchen's overnight temperature.

Treat these as approximate starting points and note what happens in your kitchen. Mix in the evening, do your folds in the first hour or two, mark the container, and go to bed. In the morning, judge it by the same signs as any bulk: a 50 to 75 percent rise, a domed top and a wobble. If it is not there yet, give it more time. If it has gone well past double and looks slack, shape it gently and bake as soon as you can.

How flour, hydration and add-ins change the timing

All the charts above assume a lean white bread flour dough. Change the dough and the clock moves.

These effects are directional rather than exact, which is one more reason to judge the dough and not the timer. Our guide to types of flour explains why whole grain and rye flours behave so differently from white flour.

A same-day sourdough schedule

The worked example above splits the bake across two days. If you want bread on the table the same evening, this is the shape of it, using a 78°F dough and 20 percent starter.

1. 7:00 a.m. Feed the starter 1:1:1 and keep it somewhere warm, about 75 to 78°F.
2. 11:30 a.m. Starter has doubled and domed. Mix the flour and water and let it rest for 30 to 45 minutes.
3. 12:15 p.m. Add the starter and salt and mix well. Check that the dough reads about 78°F.
4. 12:45 to 2:15 p.m. Four sets of stretch and folds, 30 minutes apart.
5. About 4:30 p.m. Bulk is done when the dough has risen 50 to 75 percent and wobbles. Preshape and rest 20 minutes.
6. 5:00 p.m. Shape and place in a floured banneton for a room temperature proof.
7. 5:15 p.m. Preheat the oven and Dutch oven to 450 to 500°F.
8. About 6:15 p.m. When the poke test leaves a slow, shallow dent, score and bake. The loaf is done at 205 to 210°F in the center.
9. 8:15 p.m. or later. Slice once it has cooled for at least 2 hours.

It works, but it asks you to stay close to the kitchen all afternoon and gives you less flavor and less margin than the overnight route. The bread doneness guide covers the internal temperature check in more detail.

Troubleshooting a rise that is off

If the loaf simply never lifted, why bread does not rise covers the failures that are not about timing at all.

Frequently asked questions

How long should sourdough bulk ferment?

At 78°F with 20 percent ripe starter, 4 to 5 hours. At a more typical 70°F kitchen, expect 5 1/2 to 7 hours for the same dough. Time is only an estimate, though. Stop when the dough has risen 50 to 75 percent in a straight-sided container and jiggles as one mass.

Can sourdough rise for too long?

Yes. An overproofed dough has used up its sugars and its gluten has been broken down by acid, so it spreads flat on the peel and bakes dense with a pale crust. The poke test is your warning: if a dent does not spring back at all, bake immediately and treat the result as flatbread practice.

How long can sourdough stay in the fridge before baking?

8 to 16 hours is the reliable window at 38 to 40°F, and many bakers stretch it to 24. Past a day, the yeast keeps working slowly even in the cold and the loaf starts drifting into overproofed. Keep it covered so the surface does not dry into a skin.

Why is my sourdough taking so long to rise?

The three usual causes, in order of likelihood: the starter was not at its peak when you used it, the dough is colder than you think, or the starter is young and underfed. Take the dough's temperature rather than the room's, and feed the starter twice a day for several days before an important bake.

Does sourdough need a second rise?

Yes. Bulk fermentation ferments the dough, and the final proof after shaping lets the tightened gluten relax and fill with gas again. Skipping it gives you a tight, dense loaf that tears at the score line. The final proof is short compared with bulk: 45 minutes to 2 hours warm, or 8 to 16 hours cold.

What temperature is best for rising sourdough?

76 to 78°F is the sweet spot, because it gives good yeast activity without letting the acid bacteria run ahead of the gas. Cooler is slower and more sour but very forgiving. Above 84°F the useful window narrows to minutes, and you tend to get sourness without much lift.

How do I speed up sourdough without ruining it?

Two safe levers. Raise the starter to 30 percent of the flour weight, which cuts bulk to 3 to 4 hours at 78°F. Or raise the dough temperature to 80°F with warmer mixing water. Do both and you are looking at under 3 hours, with less flavor and a much tighter margin for error.

Can I let sourdough rise overnight on the counter?

Yes, if you cut the starter so the bulk takes about 9 to 11 hours. Roughly 10 percent starter suits a 66 to 68°F kitchen and 5 to 7 percent suits 70 to 72°F. In a kitchen above about 74°F, do bulk during the day and put the shaped loaf in the fridge overnight instead.

How long does a sourdough starter take to rise after feeding?

About 4 to 6 hours at 75 to 78°F on a 1:1:1 feed, and 8 to 10 hours on a 1:5:5 feed at the same temperature. Cooler kitchens add a few hours. Use it when it has at least doubled and the top is domed or just starting to flatten.

Should sourdough double in size during bulk fermentation?

Usually no. For most home doughs, a 50 to 75 percent rise is the target. By the time a dough has doubled it has often used up much of its strength, so it spreads in the final proof and bakes flatter. Very stiff or low-hydration doughs are the main exception.

How long is too long for sourdough to rise?

On the counter, trouble usually starts once bulk runs well past its expected window for your temperature, or the dough rises well beyond double and turns slack and sticky. In the fridge, a shaped loaf is reliable for 8 to 16 hours and often fine to about 24. Beyond that it tends to overproof.

Does whole wheat sourdough rise faster?

Generally yes. The bran and germ give the culture more to feed on, so whole wheat and rye doughs ferment faster and their window is shorter. Start checking bulk early and aim for the lower end of a 50 to 75 percent rise.

Can I bulk ferment sourdough in the fridge?

You can, but fridge temperature slows the dough so much that a full bulk can take a day or more and is hard to judge. Most bakers do bulk at room temperature and use the fridge for the shaped loaf, where the cold improves flavor and scoring.