Deconstruct SunPuerto Rico Hardiness Zones
Puerto Rico covers USDA plant hardiness zones 11b to 13b on the 2023 map, so its coldest areas average 45 to 50 °F on the coldest winter night. Find your zone by ZIP code, or pick a city below for its zone, sunrise and daylight by month.
Puerto Rico hardiness zone map
This is not the official USDA Plant Hardiness Zone Map. Zones are derived from the official 2023 dataset, resampled to about 2 km. Dots mark cities with their own page.
Source: USDA Plant Hardiness Zone Map, 2023. Agricultural Research Service, U.S. Department of Agriculture, planthardiness.ars.usda.gov. Underlying data © PRISM Group, Oregon State University, prism.oregonstate.edu, accessed 2026-08-30.
Zones and daylight by city
| City | Zone | Coldest night | Longest day | Shortest day |
|---|---|---|---|---|
| San Juan | 13a | 60 to 65 °F | 13h 14m | 11h 02m |
| Ponce | 13a | 60 to 65 °F | 13h 13m | 11h 03m |
| Mayagüez | 13a | 60 to 65 °F | 13h 13m | 11h 02m |
Gardening in Puerto Rico?
Your zone says what survives winter. Deconstruct Sun measures how many hours of direct sun your exact spot gets, so you can pick plants that thrive. Free on iPhone.
Questions
What hardiness zones are in Puerto Rico?
Puerto Rico spans USDA zones 11b to 13b on the 2023 map. San Juan is in zone 13a.
How do I find my exact zone in Puerto Rico?
Enter your ZIP code in the hardiness zone lookup on this site. It reads the 2023 USDA data for that ZIP and warns you if you are near a zone boundary.
How much sun do gardens in Puerto Rico get?
In San Juan, an open spot gets up to 13.2 hours of daylight in June but only 11.0 in December. Trees and buildings cut that down, especially in winter. The Deconstruct Sun app measures the real direct-sun hours for one exact spot.