Time Difference Between Portugal and Hawaii Time
As of 31 August 2026, Hawaii Time is 11 hours behind Portugal. That number is not constant. Over the course of a year, because of daylight saving changes, Hawaii Time, United States ranges from 11 hours behind to 10 hours behind relative to Lisbon, Portugal. The calculator below is always up to date.
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Lisbon, Portugal
23:34
Mon, Aug 31, 2026
UTC+1 · Europe/Lisbon
Hawaii Time, United States
-11h12:34
Mon, Aug 31, 2026
UTC-10 · HST · Pacific/Honolulu
Hawaii Time is 11 hours behind Portugal.
Time zone details
| Place | Local date | Time zone | UTC offset | Summer time |
|---|---|---|---|---|
| Portugal | Monday, August 31, 2026 | Europe/Lisbon | UTC+1 | Active now |
| Hawaii Time | Monday, August 31, 2026 | HSTPacific/Honolulu | UTC-10 | Not observed |
Portugal: Mainland Portugal and Madeira share one zone. The Azores are 1 hour behind.
Hawaii Time: Covers Hawaii. Stays at UTC-10 all year — Hawaii does not observe daylight saving time.
Hour by hour: Portugal to Hawaii Time
Every hour of today in Portugal and what it is in Hawaii Time. Highlighted rows fall inside Hawaii Time working hours (09:00–18:00).
| Portugal | Hawaii Time |
|---|---|
| 00:00 | 13:00prev day |
| 01:00 | 14:00prev day |
| 02:00 | 15:00prev day |
| 03:00 | 16:00prev day |
| 04:00 | 17:00prev day |
| 05:00 | 18:00prev day |
| 06:00 | 19:00prev day |
| 07:00 | 20:00prev day |
| 08:00 | 21:00prev day |
| 09:00 | 22:00prev day |
| 10:00 | 23:00prev day |
| 11:00 | 00:00 |
| Portugal | Hawaii Time |
|---|---|
| 12:00 | 01:00 |
| 13:00 | 02:00 |
| 14:00 | 03:00 |
| 15:00 | 04:00 |
| 16:00 | 05:00 |
| 17:00 | 06:00 |
| 18:00 | 07:00 |
| 19:00 | 08:00 |
| 20:00 | 09:00 |
| 21:00 | 10:00 |
| 22:00 | 11:00 |
| 23:00 | 12:00 |
Best time to call or meet
Overlapping working hours
No overlap
Standard working hours in Portugal and Hawaii Time never overlap. Someone has to start early or finish late — the calling window below is the practical compromise.
Reasonable calling hours
19:00–21:00 in Portugal (08:00–10:00 in Hawaii Time)
Both people are awake and available between 08:00 and 21:00 local time during this window.
When this difference changes
Portugal puts its clocks back on Sunday, October 25, 2026
The local offset moves from UTC+1 to UTC. After that date, Hawaii Time is 10 hours behind Portugal — instead of 11 hours behind, as it is today.
Planning something with more than two places?
Adding a third city usually kills the obvious answer. The Meeting Time Finder takes up to five cities at once and shows only the hours that work for everybody.
Portugal and Hawaii Time: common questions
What is the time difference between Portugal and Hawaii Time?
As of 31 August 2026, Hawaii Time is 11 hours behind Portugal. The gap is not fixed: across the year, Hawaii Time ranges from 11 hours behind to 10 hours behind relative to Portugal, as clocks change. The calculator on this page always shows the difference for right now.
When it is 9:00 AM in Portugal, what time is it in Hawaii Time?
It is 10:00 PM in Hawaii Time, United States. Use the time field in the calculator above to check any other hour.
Is Hawaii Time ahead of or behind Portugal?
Hawaii Time is behind Portugal by 11 hours at the moment. In practical terms, the working day in Hawaii Time starts and ends later in Portugal terms.
Do Portugal and Hawaii Time observe daylight saving time?
Portugal changes its clocks twice a year; Hawaii Time does not. The difference therefore shifts by an hour when Portugal switches: across the year, Hawaii Time ranges from 11 hours behind to 10 hours behind relative to Portugal.
What is the best time to call Hawaii Time from Portugal?
Standard working hours in Portugal and Hawaii Time do not overlap at all, so one side has to take the call outside office hours. Early morning in Portugal or late evening is usually the least disruptive option.
Related comparisons
Local dates shown for Lisbon, Portugal (UTC+1) and Hawaii Time, United States (UTC-10) were generated on Monday, August 31, 2026 UTC and refresh in your browser.