Bedtime guide
What should a baby wear to sleep?
Find the room's temperature at its coldest overnight. Here's the sleep sack and layers for it, from the standard TOG chart.
In Celsius
30°C
Sleeveless, barely anything
0.2 TOG
29°C
Sleeveless, barely anything
0.2 TOG
28°C
Sleeveless, barely anything
0.2 TOG
27°C
Sleeveless, barely anything
0.2 TOG
26°C
Short sleeves, light sack
0.5 TOG
25°C
Short sleeves, light sack
0.5 TOG
24°C
Short sleeves, light sack
0.5 TOG
23°C
Short sleeves, 1 TOG sack
1.0 TOG
22°C
Short sleeves, 1 TOG sack
1.0 TOG
21°C
Long sleeves, 1 TOG sack
1.0 TOG
20°C
Long sleeves, 1 TOG sack
1.0 TOG
19°C
Pyjamas and a warm sack
2.5 TOG
18°C
Pyjamas and a warm sack
2.5 TOG
17°C
Two layers and a warm sack
2.5 TOG
16°C
Two layers and a warm sack
2.5 TOG
15°C
Cosiest: the 3.5 TOG sack
3.5 TOG
14°C
Cosiest: the 3.5 TOG sack
3.5 TOG
13°C
Cosiest: the 3.5 TOG sack
3.5 TOG
12°C
Cosiest: the 3.5 TOG sack
3.5 TOG
In Fahrenheit
86°F
Sleeveless, barely anything
0.2 TOG
84°F
Sleeveless, barely anything
0.2 TOG
82°F
Sleeveless, barely anything
0.2 TOG
80°F
Short sleeves, light sack
0.5 TOG
78°F
Short sleeves, light sack
0.5 TOG
76°F
Short sleeves, light sack
0.5 TOG
74°F
Short sleeves, 1 TOG sack
1.0 TOG
72°F
Short sleeves, 1 TOG sack
1.0 TOG
70°F
Long sleeves, 1 TOG sack
1.0 TOG
68°F
Long sleeves, 1 TOG sack
1.0 TOG
66°F
Pyjamas and a warm sack
2.5 TOG
64°F
Two layers and a warm sack
2.5 TOG
62°F
Two layers and a warm sack
2.5 TOG
60°F
Cosiest: the 3.5 TOG sack
3.5 TOG
58°F
Cosiest: the 3.5 TOG sack
3.5 TOG
56°F
Cosiest: the 3.5 TOG sack
3.5 TOG
54°F
Cosiest: the 3.5 TOG sack
3.5 TOG
Where our numbers come from
- 16–20°C is the bedroom temperature the NHS and The Lullaby Trust recommend.
- Safe sleep rules (on their back, a fitted sleep sack, no hat, nothing loose, don't overheat) follow the American Academy of Pediatrics, the NHS and The Lullaby Trust.
- TOG ratings follow the standard chart printed by sleep-sack makers.
A guide, not medical advice. Check their chest or the back of their neck: if it's hot or sweaty, take a layer off.
Every night, worked out for you.
Baby OOTD checks your baby's room and tonight's weather, then tells you what to put them in. Baby OOTD is coming to iPhone first: join the waitlist and we'll email you the day it's out.