Set Alarm for 4:30 am
An alarm pre-set for 4:30 am. It will ring .
Keep this tab open for the alarm to ring — browsers can't fire sound while a tab is fully closed.
About a 4:30 am alarm
A 4 am alarm is for very early starts: airport check-ins, market traders, bakers and anyone catching a dawn flight. Even in midsummer the sun is barely up, so a lamp helps you wake safely. A half-past time is popular because it splits the hour neatly, leaving a relaxed gap before anything that starts on the hour. It works well if you want a short walk, a shower or a coffee before leaving, and it is a common choice for people on flexible or hybrid working patterns.
In London the sun is already up at 4:30 am in none. It is still dark, or already dark, at that time in every month.
When to go to bed for a 4:30 am alarm
Sleep runs in roughly 90-minute cycles, and waking at the end of one tends to feel easier. These bedtimes include about 15 minutes to fall asleep.
- Bed at 19:15 for 6 cycles (9 hours of sleep)
- Bed at 20:45 for 5 cycles (7.5 hours of sleep)
- Bed at 22:15 for 4 cycles (6 hours of sleep)
Frequently asked questions
What time should I go to bed to wake at 4:30 am?
Allowing about 15 minutes to fall asleep, bedtimes of 19:15 (9 hours), 20:45 (7.5 hours) or 22:15 (6 hours) line up with 90-minute sleep cycles.
Will the alarm ring if I close the tab?
No. Keep this tab open, in the background is fine, and turn the volume up. The alarm uses your device's own clock.