Arecibo, Puerto Rico Weather
Dry season takes hold. Day 50 of autumn. Read this microseason across nine climate regions →
Arecibo weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 3:55 PM AST · Open-Meteo
- TodayNov 10Overcast later97%0.03″88°74°—
- WednesdayNov 11Thunderstorm65%0.02″88°72°0°
- ThursdayNov 12Thunderstorm67%0.02″90°71°+2°
- FridayNov 13Partly Cloudy24%—91°72°+1°
- SaturdayNov 14Thunderstorm63%0.02″91°74°0°
- SundayNov 15Drizzle67%0.06″87°75°-4°
- MondayNov 16Overcast41%—88°74°+1°
Air quality now AQI 20 · Good
AQI 20 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM scrubbed by 2 hours of recent rain — PM2.5 down to 4.6 µg/m³, PM10 to 5.9 µg/m³.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM scrubbed by 2 hours of recent rain — PM2.5 down to 4.6 µg/m³, PM10 to 5.9 µg/m³.
- PM2.5/PM10
- 0.78
- Wind
- calm
- Recent rain
- 2h in last 6h
- Pattern
- washed out
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
When the wind is in the west, the weather is at its best.
- Moonrise
- 7:43 AM
- Moonset
- 6:53 PM
- In sign
- ♐︎ Sagittarius
Dry season takes hold
Read this microseason across nine climate regions →
All 72 microseasons on the year wheel →
Arecibo at a glance
- Today vs. normal: Today averages 81°F (high 88°F, low 74°F), 7°F above the 74°F normal for Nov 10
- Last frost: None — no 32°F night in 1991–2020 (NOAA station 15 km away)
- Microseason: Nov 6–10
- Planting calendar: November — plant lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash; harvest lettuce, peas, spinach, radishes, tomatoes, peppers, beans, summer squash, winter squash
16-Day Forecast — Arecibo
- Tue88°74°97%
- Wed88°72°65%
- Thu90°71°67%
- Fri91°72°24%
- Sat91°74°63%
- Sun87°75°67%
- Mon88°74°41%
- Tue85°71°63%
- Wed87°71°74%
- Thu87°71°65%
- Fri85°71°75%
- Sat85°69°71%
- Sun85°70°73%
- Mon85°67°65%
- Tue86°72°68%
- Wed84°70°58%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Arecibo
Interactive wind and temperature map centered on Arecibo — it loads in your browser. Open the full weather map.
Right now in the garden
Year-round growing
As of November 10, sowing here runs through the year. Freezes are uncommon, so there is no frost date to plan around; heat and rainfall set the calendar instead. This city's planting calendar for November: plant lettuce, peas, spinach, radishes, tomatoes, peppers, beans, and squash; harvest lettuce, peas, spinach, radishes, tomatoes, peppers, beans, summer squash, and winter squash.
Sun & seasons in Arecibo
Arecibo sits in Arecibo County, where the year’s longest day runs 13h 14m of daylight and its shortest just 11h 1m — a swing of +2h 13m between the June and December solstices.
San Juan, the state’s largest city, lies about 45 miles to the E. The nearest town Arecibo tracks is Aguadilla, roughly 27 miles to the W.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, summer squash, winter squash |
| February | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, summer squash, winter squash |
| March | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, summer squash, winter squash |
| April | radishes, tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, summer squash, winter squash |
| May | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, summer squash, winter squash |
| June | tomatoes, peppers, beans, squash | tomatoes, peppers, beans, summer squash, winter squash |
| July | tomatoes, peppers, beans, squash | tomatoes, peppers, beans, summer squash, winter squash |
| August | lettuce, peas, tomatoes, peppers, beans, squash | tomatoes, peppers, beans, summer squash, winter squash |
| September | lettuce, peas, spinach, tomatoes, peppers, beans, squash | tomatoes, peppers, beans, summer squash, winter squash |
| October | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | tomatoes, peppers, beans, summer squash, winter squash |
| November | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, summer squash, winter squash |
| December | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, summer squash, winter squash |
A year in weather
Arecibo's warmest month is August (~77°F mean) and its coldest is January (~70°F). Rainfall peaks in May (10.4 inches) and bottoms out in February (3.5 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 70° | 4.3″ | 12 |
| February | 71° | 3.5″ | 10 |
| March | 71° | 5.3″ | 12 |
| April | 73° | 7.4″ | 14 |
| May | 75° | 10.4″ | 16 |
| June | 76° | 6.7″ | 13 |
| July | 76° | 6.9″ | 15 |
| August | 77° | 9.5″ | 16 |
| September | 77° | 9.9″ | 17 |
| October | 76° | 8.3″ | 17 |
| November | 74° | 7.5″ | 16 |
| December | 72° | 4.8″ | 14 |
Regional context
Similar climates Corcovado, PR, Rafael González, PR, Carrizales, PR
Arecibo's climate, from NOAA NCEI 1991-2020 station normals, pairs 70°F Januarys with 76°F Julys — a 6°F swing. About 84.6 inches of precipitation falls over roughly 171 days a year.
Arecibo's rain peaks in summer: May brings 10.4 inches over 16.1 thunderstorm-fed days, while February sees just 3.5 inches across 10.2 days under cooler, drier air. Arecibo shares that warm-season-wet pattern with places like Corcovado, PR, Rafael González, PR and Carrizales, PR.
Freezes are uncommon in Arecibo, where the coldest month averages 70°F; cool-season crops grow fall through spring. Summer heat in August (about 77°F) is the binding constraint, not cold. Arecibo beds by a wall stay warmer at night.
Similar climates: Corcovado, PR, Rafael González, PR, Carrizales, PR, Bajadero, PR, Rafael Capó, PR.
Frequently asked
- When does it freeze in Arecibo?
- Arecibo essentially never freezes: the nearest NOAA station logged no 32°F night in any 1991–2020 year, and Arecibo's coldest month averages 70°F.
- What is the rainy season in Arecibo?
- Arecibo sees its heaviest rain in May (around 10.4 inches), part of roughly 85 inches a year.
- What is the warmest month in Arecibo?
- Arecibo peaks in August, when the mean runs near 77°F.
- What is the coldest month in Arecibo?
- January is Arecibo's coldest month, averaging about 70°F.
- When can I start a vegetable garden in Arecibo?
- Any season works in Arecibo: without a reliable freeze, Arecibo's heat, not frost, decides when greens and tomatoes do best.
- How many rainy days does Arecibo get?
- Arecibo averages about 171 days with measurable rain or snow each year.
- What hardiness zone is Arecibo?
- With January around 70°F, Arecibo's zone reflects that minimum — the USDA ZIP map confirms Arecibo's band.
- What is the 10-day forecast for Arecibo?
- Arecibo's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Arecibo?
- See this week's day-by-day rain chances for Arecibo in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Arecibo?
- Current conditions for Arecibo and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Arecibo forecast updated?
- The Arecibo forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Arecibo?
- Today's sunrise and sunset times for Arecibo are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Arecibo?
- The next few days in Arecibo's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
ZIP codes in Arecibo
- 00612
- 00613
- 00614