Climate averages 1991–2020
Ponce weather
by month.
See how the year changes. July has the highest average daily maximum; February (tied with January) has the lowest average monthly rainfall.
Pleasant-weather months by our simple rule: JanuaryFebruaryDecember
Long-term climate patterns, not a forecast for a particular trip.
Across the year Ponce averages a daytime high of 29.1°C and a nighttime low of 23.2°C, with about 733 mm of rain on roughly 150 days. July is the warmest month (average high 30.6°C) and January (tied with December) the coolest (28.0°C). September is the wettest month with 124 mm; February (tied with January) is the driest with 22 mm.
Months with pleasant weather by a simple rule (average high between 18°C and 29°C, average low of at least 5°C and at most 8 rain days): January, February and December. This looks at temperature and rain only, not humidity, wind, sea temperature or crowds.
The annual picture
A year in Ponce
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Ponce climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.0°C21.8°C | 21.8°C | 22 | 7.0 | 11.211 h |
| February | 28.4°C21.6°C | 21.6°C | 22 | 6.5 | 11.512 h |
| March | 28.7°C21.8°C | 21.8°C | 36 | 8.8 | 12.012 h |
| April | 28.8°C22.5°C | 22.5°C | 54 | 11.8 | 12.513 h |
| May | 29.0°C23.5°C | 23.5°C | 86 | 15.6 | 13.013 h |
| June | 29.9°C24.3°C | 24.3°C | 48 | 12.6 | 13.213 h |
| July | 30.6°C24.6°C | 24.6°C | 55 | 11.7 | 13.113 h |
| August | 30.5°C24.8°C | 24.8°C | 77 | 15.4 | 12.713 h |
| September | 29.7°C24.5°C | 24.5°C | 124 | 18.9 | 12.312 h |
| October | 29.0°C24.0°C | 24.0°C | 105 | 19.4 | 11.712 h |
| November | 28.3°C23.2°C | 23.2°C | 76 | 14.4 | 11.311 h |
| December | 28.0°C22.3°C | 22.3°C | 28 | 7.5 | 11.111 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
Nearby cities
- AreciboPuerto Rico · 52 kmHigh 30.1°C · Low 23.1°C · 1,133 mm rain a year
- MayagüezPuerto Rico · 58 kmHigh 29.9°C · Low 24.3°C · 576 mm rain a year
- BayamónPuerto Rico · 66 kmHigh 29.9°C · Low 23.2°C · 870 mm rain a year
- CaguasPuerto Rico · 66 kmHigh 28.9°C · Low 23.3°C · 1,212 mm rain a year
- San JuanPuerto Rico · 75 kmHigh 29.9°C · Low 23.1°C · 949 mm rain a year
- CarolinaPuerto Rico · 82 kmHigh 29.6°C · Low 23.3°C · 949 mm rain a year
- Punta CanaDominican Republic · 198 kmHigh 27.5°C · Low 24.9°C · 916 mm rain a year
- Salvaleón de HigüeyDominican Republic · 230 kmHigh 28.8°C · Low 23.0°C · 788 mm rain a year
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC-4, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at 18.00°, -66.60° (3 km from the city centre), adjusted up by 0.2°C for the difference between the city's elevation (12 m) and the cell's (46 m). Rain comes from the 0.25° cell at 18.00°, -66.50°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.