Hawaii Power Outage Season
When outages happen most in Hawaii, and what to expect.
August is historically Hawaii's busiest month for recorded power outages, part of a fall season (September–November) that accounts for about 26% of all recorded outages statewide, averaging 4.4 hours per event.
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Hawaii outages by month
Total recorded events and average duration per event, summed across every tracked county in Hawaii.
Peak season insight
Hawaii's outage season runs September–November, accounting for 26% of all recorded outages. August has the highest frequency.
Month-by-month data table
| Month | Events | Avg duration |
|---|---|---|
| January | 406 | 3.1 hrs |
| February | 360 | 2.3 hrs |
| March | 395 | 3.7 hrs |
| April | 338 | 5.5 hrs |
| May | 359 | 2.2 hrs |
| June | 304 | 2.0 hrs |
| July | 387 | 3.0 hrs |
| August | 420 | 6.1 hrs |
| September | 369 | 12.2 hrs |
| October | 401 | 4.8 hrs |
| November | 375 | 2.3 hrs |
| December | 351 | 3.1 hrs |
This month in Hawaii
October has historically recorded 401 outage events across Hawaii, above the state's typical monthly average. Outages that start in October have averaged 4.8 hours.
Main causes by season
Named storms behind Hawaii's worst recorded outages, from the NOAA Storm Events Database.
Winter (December–February)
- Drought
- Thunderstorm Wind
- High Surf
- Flash Flood
- Heavy Rain
Spring (March–May)
- Drought
- High Surf
Summer (June–August)
- Hurricane Hone
- Hurricane Dora
- Drought
- High Surf
Fall (September–November)
- Drought
Hawaii's worst outage events on record
The five largest outages in Hawaii by duration and customers affected.
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Aug 24, 2024 | 76 hrs | 24,469 (14%) | Hurricane Hone |
| Jan 31, 2025 | 41 hrs | 38,334 (11%) | Flash Flood |
| Mar 8, 2023 | 28 hrs | 35,085 (11%) | High Surf |
| Feb 10, 2019 | 23 hrs | 32,353 (10%) | High Surf |
| Aug 8, 2023 | 33 hrs | 14,114 (10%) | Hurricane Dora |
Highest-risk counties in Hawaii
Lowest reliability percentile among Hawaii's tracked counties.
| County | Grade | National percentile |
|---|---|---|
| Maui County | C | 57th |
| Kauai County | C | 59th |
| Honolulu County | B | 64th |
| Hawaii County | A | 82nd |
Live weather alerts for Hawaii
There are no active National Weather Service alerts for Hawaii right now.
These live alerts come from the National Weather Service. They are public-safety information, not an outage prediction.
Hawaii power outage FAQ
When do power outages happen most in Hawaii?
August is historically the busiest single month for recorded outages in Hawaii, and Fall (September–November) accounts for about 26% of all recorded outages across the state.
How long do power outages in Hawaii typically last?
Across Hawaii's tracked counties, the average recorded outage lasts about 4.4 hours, though individual events -- especially named storms -- can run much longer.
Which counties in Hawaii have the highest outage risk?
Maui County, Kauai County, Honolulu County, Hawaii County currently rank lowest for reliability in Hawaii. See each county's page for its full history.
Does this page predict a power outage in Hawaii?
No. It describes patterns in recorded county-level outage history, not a guaranteed future event. Check the live National Weather Service alerts below for current conditions.
Prepare for Hawaii's outage season
Sized for Hawaii's recorded outage frequency and duration.
