An 8 month old usually manages wake windows of 2 hours 30 minutes to 3 hours 30 minutes and takes 2 naps a day, each lasting about 1 to 2 hours. Bedtime usually lands somewhere between 6pm and 8pm. Total sleep across 24 hours is typically 12 to 16 hours.
These numbers come from OBubba's own sleep engine for weeks 35 to 38. They are a guide to start from, not a target your baby has to hit.
At a glance
- Wake windows: 2 hours 30 minutes to 3 hours 30 minutes
- Naps: 2 naps a day
- Nap length: 1 to 2 hours each
- Total day sleep: 2 hours to 3 hours 30 minutes
- Total sleep in 24 hours: 12 to 16 hours
- Bedtime window: 6pm to 8pm
A sample day
Here is one example of how a day could look, starting with a 7am wake up. It is just one example: babies vary, and so do days.
- 7:00am Wake up for the day, milk feed
- 9:45am Nap 1 (1 hour 15 minutes), after 2 hours 45 minutes awake
- 11:00am Awake
- 2:15pm Nap 2 (1 hour 30 minutes), after 3 hours 15 minutes awake
- 3:45pm Awake
- 7:15pm Asleep for the night, after 3 hours 30 minutes awake (bedtime routine starts around 6:45pm)
That adds up to 2 hours 45 minutes of day sleep. On a day with short naps, bring bedtime earlier within the window.
What's changing at this age
By eight months most babies have settled into 2 naps a day, with wake windows of roughly 2 hours 30 minutes to 3 hours 30 minutes. A late morning nap and an early afternoon nap is a common shape.
This is a busy month developmentally. Crawling, pulling to stand and a growing understanding that you still exist when you leave the room can all affect sleep. Many families notice more protest at bedtime or more calling out at night for a while.
Separation awareness is a normal part of development. Extra reassurance at bedtime, plenty of connection during the day and a predictable routine can all help.
Common sleep problems and gentle fixes
Standing in the cot
Many babies pull to stand and then are not sure how to get back down. Practise lowering down during the day, and calmly help them lie down at night.
Bedtime protest
Separation awareness can make bedtime harder. Staying close, a consistent routine and a calm, confident goodnight are all gentle options.
Early waking
Check the time between the end of the second nap and bedtime. If it is long, a slightly earlier bedtime may help.
Short second nap
If the afternoon nap is short, an earlier bedtime within the window usually rescues the evening.
If things feel hard, you are not doing anything wrong. Small, gentle changes made one at a time, and watched for a few days, are usually kinder for everyone than a big overhaul. Look after yourself too: rest when you can, and lean on the people around you.
How OBubba helps
An age chart can only tell you what is typical. OBubba predicts your baby's next nap and bedtime from their own rhythm, not just the numbers on this page, and adjusts through the day as naps run long or short. After around four days of logging, the guidance becomes personal to your baby.
Find out more about nap prediction and how OBubba works as a gentle sleep consultant app in your pocket.
Frequently asked questions
How long should an 8 month old be awake between naps?
Usually 2 hours 30 minutes to 3 hours 30 minutes.
How many naps does an 8 month old need?
Typically 2 naps, lasting roughly 1 to 2 hours each.
What time should an 8 month old go to bed?
Between 6pm and 8pm suits many babies at this age.
How much day sleep does an 8 month old need?
Total day sleep is often around 2 hours to 3 hours 30 minutes, usually split across a morning and an afternoon nap. If your baby is happy and settles well at bedtime, the amount they are getting is likely working for them.
Safety and a gentle reminder
Every sleep, day and night, should follow safer sleep guidance. See The Lullaby Trust safer sleep advice and NHS: helping your baby to sleep. If your baby was born prematurely, use their corrected age when reading these ranges. The ranges are guides, not targets. If you are worried about your baby's sleep, feeding or health, speak to your health visitor or GP.
Keep reading
- Previous month: 7 Month Old Sleep Schedule, Wake Windows and Naps
- Next month: 9 Month Old Sleep Schedule, Wake Windows and Naps
- Every age on one page: wake windows by age
- The clocks have just changed? Try our gentle reset after the clocks change
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