Your baby at 5 months
Everything that lines up at this one age — growth figures from the WHO standard, sleep norms, the milestones whose normal window covers this month, and the vaccine doses due. Percentiles are called centiles in the UK; the numbers are identical.
Growth at 5 months
Median means half of babies are above and half below. Being away from the median is not a problem in itself — following your own curve is what matters.
| Median (50th) · Boys | Middle half (25th–75th) · Boys | Median (50th) · Girls | Middle half (25th–75th) · Girls | |
|---|---|---|---|---|
| Weight | 7.51 kg | 6.96–8.09 kg | 6.90 kg | 6.35–7.49 kg |
| Length | 65.9 cm | 64.5–67.3 cm | 64.0 cm | 62.5–65.5 cm |
| Head circumference | 42.6 cm | 41.7–43.4 cm | 41.5 cm | 40.6–42.3 cm |
Want the number for your own baby? Open the percentile calculator
Sleep at 5 months
Ranges, not targets. Healthy babies sit outside them regularly.
- Total per day
- 12 h – 16 h
- One nap
- 30 m – 1 h 30 m
- Night sleep
- 10 h – 12 h
Milestones in this window
The window is when a skill usually appears — not a deadline. Appearing later than the window is a reason to mention it at a check-up, not to worry alone.
- Rolls overGross motorusual window: 3–6
- Sits unsupportedGross motorusual window: 4.5–8
- Grasps objectsFine motorusual window: 3–6
- BabblesSpeechusual window: 4–9
- LaughsSocialusual window: 3–6
Reference figures, not medical advice. Every baby differs; a check-up answers questions a table cannot.