Guaynabo weather
At 3:00 PM local time it was cloudy and 30°C (86°F). Mostly light, on-and-off rain; heavier around 2 AM, 11 AM, 12 PM (11.6 mm total). Best months for weather: Dec–Apr. Below: today's sky, the hour-by-hour rain chance and the 16-day forecast for Guaynabo, Guaynabo, Puerto Rico.
Current conditions
- Clouds
- 97%
- Chance of rain
- 95%
- Rain
- 0.0 mm/h
Hourly Forecast
Mostly light, on-and-off rain; heavier around 2 AM, 11 AM, 12 PM (11.6 mm total)
Daily Forecast
Best Time to Visit
Peak season Dec–AprOff season May, Aug–Nov
About Guaynabo weather
Is it raining in Guaynabo right now?
No. It’s cloudy and 30° right now. Mostly light, on-and-off rain; heavier around 2 AM, 11 AM, 12 PM (11.6 mm total).
What’s the weather like in Guaynabo this week?
Over the next 7 days, expect highs of 30–32° and lows of 22–23°. Rain is likely on 7 of 7 days (Saturday, Sunday, Monday, Tuesday, Wednesday, Thursday, Friday). The driest day looks like Tuesday.
Has it been raining in Guaynabo lately?
In the past 7 days, Guaynabo had 6 rainy days and 20.5 mm of rain in total.
What should I pack for Guaynabo?
For the coming week, bring an umbrella or rain jacket, light, breathable clothes and sunscreen.
Guaynabo weather by month
When is the best time to visit Guaynabo?
Based on weather alone, the best time to visit Guaynabo is Dec–Apr, according to NASA's 2001–2025 climate averages. May, Aug–Nov tends to be the least pleasant. Average highs run from 27°C (81°F) in January to 30°C (86°F) in August.
What is the rainiest month in Guaynabo?
September is the wettest month, with about 162 mm (6.4 in) of rain on average. February is the driest, with about 45 mm (1.8 in).
What is the hottest month in Guaynabo?
August is the warmest, with average highs of 30°C (86°F) and lows of 26°C (79°F). January is the coolest, with highs of 27°C (81°F) and lows of 23°C (74°F).
Does Guaynabo have a rainy season?
Yes. Sep–Oct is the rainy season (150 mm or more a month), while Jan–Feb is usually dry (under 60 mm).
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), forecast and current conditions from Open-Meteo. Page updated . How we rate months