Arecibo Climate by Month
Arecibo, Puerto Rico
Hot all year, with rain spread through the year.
Arecibo is hot all year, with rain spread through the year. Afternoon highs range from 86°F (30°C) in January to 92°F (33°C) in July, and January nights average 64°F (18°C). About 62 in (1566 mm) of rain falls in a typical year, with no clear rainy season. The air is humid, averaging 80% relative humidity.
- Warmest month
- 92°F(33°C)
- Average high, July
- Coldest nights
- 64°F(18°C)
- Average low, January
- Rain per year
- 62 in(1566 mm)
- No clear rainy season
- Humidity
- 80%
- Sunniest: July
Best and worst months in Arecibo
Best for weatherThe most comfortable weather comes in February and March, with highs around 87°F (31°C) and about 3.0 in (77 mm) of rain a month.
Least pleasantAugust and September are the least pleasant; September is the hottest, with highs of 92°F (33°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in February.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Arecibo weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 86°F(30°C) | 64°F(18°C) | 4.3 in(109 mm) | 80% | 4.1 |
| FebFebruaryBest | 87°F(31°C) | 64°F(18°C) | 2.5 in(64 mm) | 79% | 4.8 |
| MarMarchBest | 88°F(31°C) | 64°F(18°C) | 3.5 in(89 mm) | 78% | 5.5 |
| AprApril | 89°F(32°C) | 67°F(19°C) | 5.2 in(133 mm) | 77% | 5.8 |
| MayMay | 90°F(32°C) | 69°F(20°C) | 5.6 in(141 mm) | 79% | 5.7 |
| JunJune | 92°F(33°C) | 70°F(21°C) | 5.7 in(146 mm) | 81% | 5.9 |
| JulJuly | 92°F(33°C) | 70°F(21°C) | 4.5 in(114 mm) | 80% | 5.9 |
| AugAugust | 92°F(33°C) | 71°F(22°C) | 5.6 in(142 mm) | 82% | 5.8 |
| SepSeptember | 92°F(33°C) | 70°F(21°C) | 6.7 in(170 mm) | 83% | 5.3 |
| OctOctober | 91°F(33°C) | 70°F(21°C) | 5.5 in(139 mm) | 81% | 4.9 |
| NovNovember | 89°F(32°C) | 68°F(20°C) | 7.0 in(178 mm) | 80% | 4.2 |
| DecDecember | 87°F(31°C) | 66°F(19°C) | 5.6 in(141 mm) | 83% | 3.9 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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