Perth time to London time
London is 8 hours behind Perth in January and 7 hours behind in July (Perth GMT+8/UTC+08:00 in summer; London BST/UTC+01:00). Enter a Perth time below to convert it, or leave it blank to see the current time in both cities.
How to use the Perth to London time
- Type a Perth time (24-hour) and optionally a date, or leave blank for now.
- Click Convert.
- Read the London time and the working-hours table.
Time difference between Perth and London
London is 8 hours behind Perth in January and 7 hours behind in July. London observes daylight saving time and Perth does not, so the difference changes twice a year. Perth uses Australia/Perth time (UTC+08:00 in January, UTC+08:00 in July); London uses Europe/London (UTC+00:00 in January, UTC+01:00 in July).
Working week in Perth and London
Perth: Australian Western Time, UTC+8 all year (Western Australia rejected daylight saving in a 2009 referendum). Two to three hours behind Sydney.
London: Office hours 09:00–17:30, weekend Saturday–Sunday. Clocks go forward on the last Sunday of March (BST, UTC+1) and back on the last Sunday of October (GMT).
Quick conversion table (summer difference)
| Perth | London |
|---|---|
| 08:00 | 01:00 |
| 09:00 | 02:00 |
| 10:00 | 03:00 |
| 12:00 | 05:00 |
| 14:00 | 07:00 |
| 16:00 | 09:00 |
| 18:00 | 11:00 |
| 20:00 | 13:00 |
| 22:00 | 15:00 |
Table uses the July difference; the tool above applies the exact rule for any date.
Best time to call between Perth and London
Within normal office hours (09:00–18:00) in both cities: 16:00–17:00 Perth time. For a compromise outside that window, the fairest slots are the ones nearest each side's start or end of day, alternating who takes the inconvenient hour.
Reverse
Need the other direction? See London to Perth, or the general time zone converter.
Frequently asked questions
How many hours ahead is London from Perth?
London is 8 hours behind Perth in January and 7 hours behind in July.
When it is 12:00 noon in Perth, what time is it in London?
05:00 in summer (the same or previous day); use the tool for a specific date.
Does the converter handle daylight saving?
Yes, for the exact date you enter, using the IANA time-zone rules in your browser.
Privacy
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Last updated 2026-09-23.