🇵🇷 Weather in Guaynabo
Map Overlays:
Hourly Forecast for Guaynabo
23:00
24°
23%
00:00
24°
23%
01:00
24°
21%
02:00
24°
23%
03:00
24°
23%
04:00
24°
22%
05:00
24°
22%
06:00
23°
22%
07:00
26°
23%
08:00
28°
13%
09:00
30°
11%
10:00
30°
10%
11:00
31°
3%
12:00
32°
3%
13:00
32°
11%
14:00
32°
10%
15:00
31°
10%
16:00
31°
7%
17:00
30°
8%
18:00
29°
11%
19:00
27°
13%
20:00
25°
11%
21:00
24°
14%
22:00
24°
15%
14-Day Forecast for Guaynabo
2026-07-12
Patchy rain nearby
32° /
24°
2026-07-13
Patchy rain nearby
32° /
23°
2026-07-14
Patchy rain nearby
31° /
23°
2026-07-15
Sunny
32° /
23°
2026-07-16
Patchy rain nearby
31° /
22°
2026-07-17
Patchy rain nearby
30° /
22°
2026-07-18
Patchy rain nearby
32° /
22°
Additional Forecasts for Guaynabo
Air Quality
💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 87.0 μg/m³
O₃ (Ozone) 30.0 μg/m³
NO₂ (Nitrogen Dioxide) 0.6 μg/m³
SO₂ (Sulphur Dioxide) 0.4 μg/m³
PM2.5 (Fine particles) 8.3 μg/m³
PM10 (Coarse particles) 18.7 μg/m³
Historical Weather
Weather Forecasts for Other Cities in Puerto Rico
Weather in Guaynabo — FAQ
Answers refreshed each request based on current conditions in Guaynabo.
What is the weather like right now in Guaynabo?
Right now in Guaynabo, Puerto Rico the temperature is 28.3°C (feels like 33.4°C), with partly cloudy. Relative humidity is 79% and wind is 11.5 km/h.
What is today's high and low temperature in Guaynabo?
Today's forecast high in Guaynabo is 31.9°C and the overnight low is 24.1°C. The diurnal range — high minus low — depends on cloud cover; clear days swing more than overcast ones.
Will it rain in Guaynabo today?
The chance of precipitation in Guaynabo today is 25%. Forecast accuracy is highest within the next 6 hours and decreases steadily out to 14 days.
How often does the weather here update?
Current observations refresh every 15-60 minutes from the nearest monitoring stations operated by national meteorological agencies. The hourly forecast updates approximately every hour; the 7- and 14-day outlook is recomputed several times per day.
What does 'feels like' temperature mean?
Feels-like (apparent) temperature accounts for humidity, wind chill and direct sunshine — variables that change how the human body perceives heat or cold. On hot, humid days it can be 3-7°C above the actual reading; on cold windy days it can be 5-15°C below.
Why does the temperature in Guaynabo differ from nearby cities?
Even short distances can change temperatures noticeably. Guaynabo's reading reflects altitude, proximity to large bodies of water, urban heat island effects, and the exact location of the monitoring stations supplying the data. Coastal cities are typically milder and more humid than inland equivalents.