Weather forecast for tomorrowGuantanamo, Cuba

Weather forecast for tomorrow

Wednesday 21. Oct 2026

  • 31°C
  • 22°C
PM Thunderstorms
PM Thunderstorms
  • Precip. probability: 55%
  • Precipitation: 12mm
  • Wind: 15km/hSW 219°
  • Humidity: 77%
  • UV index: 9
  • Sunrise: 06:57 CDT
  • Sunset: 18:32 CDT
  • ▼
Tomorrow, isolated thunderstorms are expected with brief heavy rain.
With a high probability, moderate precipitation is forecasted. The highest temperature will be a tropical 31°C, while the lowest temperature will be a pleasant 22°C.
The maximum heat index, which adjusts the air temperature based on humidity, is assessed at a blistering 40°C. Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
The maximum temperature will align with October's usual high of 30°C.
Sunrise will be at 06:57 and sunset at 18:32; tomorrow's daylight will last for 11h and 35min.

Hourly overview

Hourly temperatures

Warmest hour: 15h 37°C.
Coldest hour: 6h 24°C.

Chance of precipitation

Highest chance: 21h 9%.

Hourly weather forecast

  • 0h
  • 24°C
  • Feels like:
    27°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0mm
  • Wind: 4km/hNW 308°
  • Humidity: 89%
  • Pressure: 1012mbar
  • Visibility: 14km
  • UV index: 0
  • ▼
  • 2h
  • 24°C
  • Feels like:
    26°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0mm
  • Wind: 4km/hWNW 302°
  • Humidity: 91%
  • Pressure: 1012mbar
  • Visibility: 14km
  • UV index: 0
  • ▼
  • 4h
  • 23°C
  • Feels like:
    25°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0mm
  • Wind: 6km/hNW 321°
  • Humidity: 92%
  • Pressure: 1011mbar
  • Visibility: 14km
  • UV index: 0
  • ▼
  • 6h
  • 23°C
  • Feels like:
    24°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0mm
  • Wind: 5km/hNW 316°
  • Humidity: 94%
  • Pressure: 1012mbar
  • Visibility: 14km
  • UV index: 0
  • ▼
Sunrise: 06:57
  • 8h
  • 23°C
  • Feels like:
    25°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 9%
  • Precipitation: 0mm
  • Wind: 7km/hNW 322°
  • Humidity: 93%
  • Pressure: 1012mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
  • 10h
  • 28°C
  • Feels like:
    31°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0mm
  • Wind: 5km/hNW 313°
  • Humidity: 76%
  • Pressure: 1013mbar
  • Visibility: 16km
  • UV index: 5
  • ▼
  • 12h
  • 31°C
  • Feels like:
    35°C
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0mm
  • Wind: 8km/hSE 138°
  • Humidity: 61%
  • Pressure: 1013mbar
  • Visibility: 16km
  • UV index: 9
  • ▼
  • 14h
  • 32°C
  • Feels like:
    37°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0mm
  • Wind: 13km/hSSE 149°
  • Humidity: 55%
  • Pressure: 1011mbar
  • Visibility: 16km
  • UV index: 9
  • ▼
  • 16h
  • 32°C
  • Feels like:
    36°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0mm
  • Wind: 13km/hSSE 163°
  • Humidity: 57%
  • Pressure: 1010mbar
  • Visibility: 16km
  • UV index: 3
  • ▼
  • 18h
  • 29°C
  • Feels like:
    32°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 3%
  • Precipitation: 0mm
  • Wind: 12km/hSSE 161°
  • Humidity: 68%
  • Pressure: 1010mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
Sunset: 18:32
  • 20h
  • 26°C
  • Feels like:
    29°C
Mostly Clear
Mostly Clear
  • Precip. probability: 6%
  • Precipitation: 0mm
  • Wind: 5km/hNW 318°
  • Humidity: 81%
  • Pressure: 1012mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
  • 22h
  • 25°C
  • Feels like:
    28°C
Mostly Clear
Mostly Clear
  • Precip. probability: 9%
  • Precipitation: 0mm
  • Wind: 5km/hN 353°
  • Humidity: 84%
  • Pressure: 1013mbar
  • Visibility: 16km
  • UV index: 0
  • ▼
Tomorrow, a combination of cloudy, dry and sunny and storm-filled weather is expected.
The temperature will be between the lowest temperature of 23°C and the highest temperature of 32°C. The feels-like temperature will be between the lowest temperature of 24°C and the highest temperature of 37°C. The hottest part of the day will be from 13h to 16h.
The maximum temperature will be alike with the average high of 30°C in October. The temperature low is forecasted to be also consistent with the usual October value of 22.9°C.
Updated: Oct 21, 2026 @ 03:55:40 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Wednesday, in Guantanamo, cloud build-up may lead to afternoon thunderstorms.

Moderate precipitation of 12mm is anticipated. The likelihood of rainfall is 55%.

Tomorrow, the highest temperature will be 31°C, while the lowest temperature will be 22°C. The maximum heat index, which integrates air moisture with ambient temperature, is calculated to be 40°C.
The maximum temperature will be in line with the average highest temperature of 30°C in October. The lowest temperature will be also in line with the average low of 22.9°C.

On Wednesday, in Guantanamo, sunrise will be at 06:57 and sunset at 18:32 (CDT).

Tomorrow, the daylight will last for 11h and 35min.