See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:17
Sunrise
18:12
Sunset
Moon
Waxing Gibbous
17:37
Moonrise
05:07
Moonset
Daily Forecast
Today
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Air Quality Data Available
Upgrade to access real-time air quality data for Guayama.
Resources
UV Index
Humidity
Current stargazing conditions?
See sky darkness, moon phase, and the best viewing window for Guayama.
View stargazing scoreWeather in Guayama today, September 25, 2026
Guayama looks damp on September 25, 2026, so plan for wet spells during the day. Early travel and outdoor time should assume rain can arrive quickly. Early hours look the most unsettled, with rain probability near 20% by 09:00. The thickest cloud arrives around 10:00, reaching about 9%.
The day peaks near 30°C and cools toward 26°C. The air stays humid, with relative humidity between 69% and 89% and the peak around 04:00. A lighter breeze peaks around 11:00 near 3.5 km/h.
The afternoon should feel quieter than the damp start, with rain probability easing to about 14% after morning values near 20%. Cloud cover stays around 11% by 13:00. Visibility stays near 16.1 km. Expect sunrise at 06:17, sunset at 18:12, and 11 hours 55 minutes of sunlight today overall.
The practical takeaway for Guayama on September 25, 2026 is simple: plan for rain, keep layers handy, and work around a high of about 30°C.
