USDA Hardiness Zone 13a
Frost Dates for 00653 — Guanica, Puerto Rico
NOAA 1991–2020 normals from Magueyes Is, PR (12 ft), 10 miles west.
Updated
No night at or below 32°F was recorded at Magueyes Is, PR in 1991–2020, not even 36°F, so Guanica has no frost dates to plan around; the coolest month, February, averages a low of 69°F.
- Winters with a freeze
- 0%
- Winters with 36°F
- 0%
- Coldest month low
- 69°F
- Hardiness zone
- 13a
32°F or below, 1991–2020
frost possible on leaves
average, February
60 to 65°F (15.6 to 18.3°C) coldest night
Frost risk by date in Guanica
Magueyes Is, PR, 10 miles west of Guanica, did not record a night at or below 32°F in 1991–2020. All 25 other Puerto Rico stations behind this site's ZIP pages recorded no 32°F night either.
Freeze probabilities 1991–2020 at Magueyes Is, PR, from NOAA NCEI U.S. Climate Normals. Where a temperature is reached in fewer than 99.5% of years, the dates describe only the years that reach it. Not a forecast.
Frost risk on any date in 00653 →Compare Guanica with another place →
Weather by month in Guanica
September is the warmest month at Magueyes Is, PR, averaging 91°F by day and 76°F at night; February is the coldest at 86°F and 69°F. Not one month recorded a 32°F night; the lowest monthly average low is 69°F.
Warmth for growing adds up to 11,233 growing degree days a year (base 50°F), more than at 92% of the 25 Puerto Rico stations. 48% of them (5,363) have built up by the end of June, and July adds the most, 1,028. Precipitation totals 42.6 inches a year, most in October (6.3") and least in January (1.9"); May to September bring 45% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 86 | 70 | 1.9 | 0% | 0 | 868 |
| Feb | 86 | 69 | 1.9 | 0% | 0 | 773 |
| Mar | 86 | 70 | 2.7 | 0% | 0 | 868 |
| Apr | 87 | 72 | 3.6 | 0% | 0 | 887 |
| May | 88 | 75 | 4.1 | 0% | 0 | 977 |
| Jun | 90 | 76 | 2.5 | 0% | 0 | 992 |
| Jul | 90 | 76 | 2.7 | 0% | 0 | 1028 |
| Aug | 91 | 76 | 4.3 | 0% | 0 | 1026 |
| Sep | 91 | 76 | 5.5 | 0% | 0 | 999 |
| Oct | 90 | 75 | 6.3 | 0% | 0 | 1006 |
| Nov | 88 | 73 | 5.1 | 0% | 0 | 920 |
| Dec | 88 | 70 | 2.0 | 0% | 0 | 891 |
Monthly normals 1991–2020 at Magueyes Is, PR (12 ft), NOAA NCEI. "32°F night": chance of at least one in the month. GDD: growing degree days, base 50°F.
Compared with the next station
The nearest other station, Lajas Substn, PR, 12 miles west of Guanica, has no 32°F night on record either, and a coolest-month low 7°F colder (62°F).
Where these figures come from
ZIP 00653 is 10 miles from Magueyes Is, PR, which stands at 12 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 00653 in zone 13a, the band where the coldest night of the year averaged 60 to 65°F (15.6 to 18.3°C) over 1991–2020; a zone describes winter lows, not frost dates.
Frost dates across Puerto Rico →
Hardiness zone and temperature range: USDA Plant Hardiness Zone Map 2023 (USDA-ARS, Oregon State University), ZIP-code listing, unchanged. °C converted from °F by this site.
Thirty-year averages, not a forecast: check the forecast before planting out. How stations are matched and which pages are offered to search engines: methodology.