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
06:53
Sunrise
18:50
Sunset
Moon
Waxing Gibbous
17:05
Moonrise
03:57
Moonset
Daily Forecast
Today
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Air Quality Data Available
Upgrade to access real-time air quality data for Guantánamo.
UV Index
Humidity
Current stargazing conditions?
See sky darkness, moon phase, and the best viewing window for Guantánamo.
View stargazing scoreWeather in Guantánamo today, September 23, 2026
Rain features in Guantánamo on September 23, 2026, so keep waterproofs handy through the day. The damp theme is strongest where shower chances rise. Expect a grey start, with morning cloud around 100% by 00:00. Outdoor plans early on should not rely on bright skies.
Temperatures climb from an overnight low near 24°C toward a daytime high of about 34°C. The air stays humid, with relative humidity between 53% and 97% and the peak around 20:00. Winds stay light, near 1.4 km/h by 20:00, so the day feels still more than breezy.
The second half of the day still looks unsettled, with rain probability around 98% by 15:00. Dense cloud near 87% at 23:00 keeps the feel grey. Visibility holds near 14.8 km, though it can fall to 4.2 km. The sun rises at 06:53 and sets at 18:50, for a total of 11 hours 57 minutes of sunlight today.
In short, treat September 23, 2026 in Guantánamo as a damp day: pack covers, watch the wetter hours, and expect a high near 34°C.
Frequently asked questions about weather in Guantánamo
How warm does it get in Guantánamo?
The warmest month in Guantánamo is August, with average high temperatures of 33°C. The average temperature during this period is around 28°C.
How cold does it get in Guantánamo?
The coldest month in Guantánamo is January, with average low temperatures of 20°C. The average temperature during this period is around 24°C.
What is the wettest time of year in Guantánamo?
The wettest month in Guantánamo is May, with an average of 163mm of precipitation.
What is the driest time of year in Guantánamo?
The driest month in Guantánamo is February, with an average of 14mm of precipitation.