Puerto Rico Power Outage Season
When outages happen most in Puerto Rico, and what to expect.
May is historically Puerto Rico's busiest month for recorded power outages, part of a spring season (March–May) that accounts for about 27% of all recorded outages statewide, averaging 5.8 hours per event. 6 of Puerto Rico's 7 tracked counties currently carry a Reliability Grade of F.
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Puerto Rico outages by month
Total recorded events and average duration per event, summed across every tracked county in Puerto Rico.
Peak season insight
Puerto Rico's outage season runs March–May, accounting for 27% of all recorded outages. May has the highest frequency.
Month-by-month data table
| Month | Events | Avg duration |
|---|---|---|
| January | 1,591 | 3.5 hrs |
| February | 1,770 | 4.1 hrs |
| March | 1,993 | 4.1 hrs |
| April | 1,832 | 4.7 hrs |
| May | 2,111 | 6.3 hrs |
| June | 1,647 | 7.0 hrs |
| July | 1,999 | 6.8 hrs |
| August | 1,799 | 8.0 hrs |
| September | 1,782 | 8.7 hrs |
| October | 1,835 | 6.9 hrs |
| November | 2,070 | 4.5 hrs |
| December | 1,899 | 4.1 hrs |
This month in Puerto Rico
October has historically recorded 1,835 outage events across Puerto Rico, below the state's typical monthly average. Outages that start in October have averaged 6.9 hours.
Main causes by season
Named storms behind Puerto Rico's worst recorded outages, from the NOAA Storm Events Database.
Spring (March–May)
- Flood
Summer (June–August)
- Tropical Storm Warning
- Excessive Heat
Fall (September–November)
- Hurricane Fiona
- Hurricane Earl
- Tropical Storm Peter
Puerto Rico's worst outage events on record
The five largest outages in Puerto Rico by duration and customers affected.
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Sep 17, 2022 | 259 hrs | 243,802 (97%) | Unnamed event |
| Aug 11, 2024 | 362 hrs | 174,374 (44%) | Unnamed event |
| Aug 13, 2024 | 332 hrs | 175,127 (70%) | Tropical Storm Warning |
| Sep 17, 2022 | 250 hrs | 219,197 (100%) | Unnamed event |
| Sep 17, 2022 | 242 hrs | 210,593 (99%) | Hurricane Fiona |
Highest-risk counties in Puerto Rico
Lowest reliability percentile among Puerto Rico's tracked counties.
| County | Grade | National percentile |
|---|---|---|
| Mayagüez Municipio | F | 0th |
| Arecibo Municipio | F | 0th |
| Ponce Municipio | F | 0th |
| Caguas Municipio | F | 1st |
| Bayamón Municipio | F | 3rd |
Live weather alerts for Puerto Rico
There are no active National Weather Service alerts for Puerto Rico right now.
These live alerts come from the National Weather Service. They are public-safety information, not an outage prediction.
Puerto Rico power outage FAQ
When do power outages happen most in Puerto Rico?
May is historically the busiest single month for recorded outages in Puerto Rico, and Spring (March–May) accounts for about 27% of all recorded outages across the state.
How long do power outages in Puerto Rico typically last?
Across Puerto Rico's tracked counties, the average recorded outage lasts about 5.8 hours, though individual events -- especially named storms -- can run much longer.
Which counties in Puerto Rico have the highest outage risk?
Mayagüez Municipio, Arecibo Municipio, Ponce Municipio, Caguas Municipio, Bayamón Municipio currently rank lowest for reliability in Puerto Rico. See each county's page for its full history.
Does this page predict a power outage in Puerto Rico?
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 Puerto Rico's outage season
Sized for Puerto Rico's recorded outage frequency and duration.
