Climate averages 1991–2020
Arecibo weather
in August.
A hot, wet month: one of the warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Arecibo: daytime highs average 31.7°C and nights cool to about 24.7°C. By daytime temperature it is one of the warmest months of the year.
Expect about 101 mm of rain on roughly 20 days, which makes August a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 45 min on an average August day.
The nearest other city in this atlas is Ponce (52 km away). In August its highs average 30.5°C, 1.2°C cooler than Arecibo, with 77 mm of rain.
Among the 7 cities listed in Puerto Rico, Arecibo ranks 1st of 7 for the warmest August highs and 6th of 7 for the driest August (rainfall, lowest first). The mean August high of those 7 cities is 31.1°C; Arecibo is 0.6°C warmer than that mean.
From August to September, average highs fall by 0.5°C to 31.2°C, and monthly rainfall rises from 101 mm to 154 mm.
The annual picture
August in context
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
Arecibo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.3°C21.5°C | 21.5°C | 41 | 9.5 | 11.211 h |
| February | 29.0°C21.3°C | 21.3°C | 37 | 8.2 | 11.512 h |
| March | 29.6°C21.4°C | 21.4°C | 59 | 9.9 | 12.012 h |
| April | 29.9°C22.2°C | 22.2°C | 107 | 13.7 | 12.613 h |
| May | 30.4°C23.3°C | 23.3°C | 165 | 18.3 | 13.013 h |
| June | 31.5°C24.3°C | 24.3°C | 92 | 13.8 | 13.213 h |
| July | 31.7°C24.6°C | 24.6°C | 79 | 14.8 | 13.113 h |
| August, selected | 31.7°C24.7°C | 24.7°C | 101 | 19.6 | 12.813 h |
| September | 31.2°C24.4°C | 24.4°C | 154 | 22.3 | 12.312 h |
| October | 30.4°C24.0°C | 24.0°C | 138 | 21.3 | 11.712 h |
| November | 28.9°C23.1°C | 23.1°C | 113 | 17.4 | 11.311 h |
| December | 28.3°C22.1°C | 22.1°C | 48 | 11.4 | 11.011 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
August in nearby cities
- Ponce in AugustPuerto Rico · 52 kmHigh 30.5°C · Low 24.8°C · 77 mm rain
- Mayagüez in AugustPuerto Rico · 54 kmHigh 31.3°C · Low 25.8°C · 67 mm rain
- Bayamón in AugustPuerto Rico · 60 kmHigh 31.6°C · Low 24.8°C · 79 mm rain
- San Juan in AugustPuerto Rico · 64 kmHigh 31.5°C · Low 24.7°C · 95 mm rain
- Caguas in AugustPuerto Rico · 75 kmHigh 30.3°C · Low 24.8°C · 127 mm rain
- Carolina in AugustPuerto Rico · 81 kmHigh 31.1°C · Low 24.9°C · 95 mm rain
- Punta Cana in AugustDominican Republic · 178 kmHigh 28.9°C · Low 26.1°C · 105 mm rain
- Salvaleón de Higüey in AugustDominican Republic · 211 kmHigh 30.3°C · Low 24.5°C · 88 mm rain
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 limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Arecibo) is explained once on the Arecibo year overview and on the Sources, method and limits page.