Weather forecast for 10 daysLa Unión, Guatemala

Weather forecast for the weekend

Saturday 31. Oct 2026

  • 27°C
  • 18°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 7%
  • Precipitation: 0mm
  • Wind: 18km/hNNE 24°
  • Humidity: 69%
  • UV index: 11
  • Sunrise: 05:52 CST
  • Sunset: 17:28 CST
  • ▼
Today, on Saturday, 31st of October, mainly sunny conditions will dominate the day.
The temperature is predicted to vary between a moderately hot 27°C and a breezy 18°C.
The maximum heat index, which calculates the temperature value influenced by the moisture in the air, is assessed at 29°C.
The daily maximum temperature is anticipated to be relatively higher than October's climate average of 24.5°C.
Sunrise was at 05:52 and sunset will be at 17:28; the daylight will last for 11h and 36min.

Sunday 1. Nov 2026

  • 26°C
  • 19°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0mm
  • Wind: 20km/hNNE 24°
  • Humidity: 76%
  • UV index: 11
  • Sunrise: 05:53 CST
  • Sunset: 17:28 CST
  • ▼
On Sunday, in La Unión, the sky will feature a blend of clouds and sunshine.
Temperatures will oscillate between a warm 26°C at their highest and a comfortable 19°C at their lowest.
The highest temperature tomorrow will align with the usual October peak of 24.5°C.
Sunrise will be at 05:53 and sunset at 17:28; tomorrow's daylight will last for 11h and 35min.

10-day overview

Daily temperatures

Warmest period: Tuesday - Wednesday 29°C.
Minimum temperature: 26°C.

Chance of precipitation

Highest chance: Monday 09.11. 60%.

Long-term weather forecast

  • Saturday
  • 31. Oct 2026
  • 27°C
  • 18°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 7%
  • Precipitation: 0mm
  • Wind: 18km/hNNE 24°
  • Humidity: 69%
  • UV index: 11
  • Sunrise: 05:52 CST
  • Sunset: 17:28 CST
  • ▼
  • Sunday
  • 1. Nov 2026
  • 26°C
  • 19°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0mm
  • Wind: 20km/hNNE 24°
  • Humidity: 76%
  • UV index: 11
  • Sunrise: 05:53 CST
  • Sunset: 17:28 CST
  • ▼
  • Monday
  • 2. Nov 2026
  • 26°C
  • 18°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 24%
  • Precipitation: 0mm
  • Wind: 20km/hNNE 25°
  • Humidity: 77%
  • UV index: 11
  • Sunrise: 05:53 CST
  • Sunset: 17:28 CST
  • ▼
  • Tuesday
  • 3. Nov 2026
  • 29°C
  • 18°C
Mostly Sunny
Mostly Sunny
  • Precip. probability: 12%
  • Precipitation: 0mm
  • Wind: 16km/hNNE 22°
  • Humidity: 69%
  • UV index: 11
  • Sunrise: 05:53 CST
  • Sunset: 17:27 CST
  • ▼
  • Wednesday
  • 4. Nov 2026
  • 29°C
  • 18°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 18%
  • Precipitation: 0mm
  • Wind: 16km/hNNE 22°
  • Humidity: 69%
  • UV index: 11
  • Sunrise: 05:54 CST
  • Sunset: 17:27 CST
  • ▼
  • Thursday
  • 5. Nov 2026
  • 28°C
  • 18°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0mm
  • Wind: 16km/hNNE 23°
  • Humidity: 70%
  • UV index: 8
  • Sunrise: 05:54 CST
  • Sunset: 17:27 CST
  • ▼
  • Friday
  • 6. Nov 2026
  • 28°C
  • 18°C
PM Showers
PM Showers
  • Precip. probability: 32%
  • Precipitation: 1mm
  • Wind: 16km/hNNE 23°
  • Humidity: 68%
  • UV index: 11
  • Sunrise: 05:54 CST
  • Sunset: 17:26 CST
  • ▼
  • Saturday
  • 7. Nov 2026
  • 27°C
  • 18°C
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0mm
  • Wind: 16km/hNNE 22°
  • Humidity: 69%
  • UV index: 10
  • Sunrise: 05:55 CST
  • Sunset: 17:26 CST
  • ▼
  • Sunday
  • 8. Nov 2026
  • 27°C
  • 18°C
PM Showers
PM Showers
  • Precip. probability: 41%
  • Precipitation: 2mm
  • Wind: 16km/hNNE 21°
  • Humidity: 70%
  • UV index: 10
  • Sunrise: 05:55 CST
  • Sunset: 17:26 CST
  • ▼
  • Monday
  • 9. Nov 2026
  • 26°C
  • 18°C
Showers
Showers
  • Precip. probability: 60%
  • Precipitation: 6mm
  • Wind: 17km/hNNE 20°
  • Humidity: 74%
  • UV index: 9
  • Sunrise: 05:56 CST
  • Sunset: 17:25 CST
  • ▼
Looking ahead, conditions suggest a period of gloomy, bright and wet weather is predicted.
Rainfall is predicted for Friday, next Sunday and Monday.
The temperature shift across days will be subtle in the coming days. The maximum temperature will vary between 26°C and 29°C, while the lowest nightly temperature differences will be also negligible, as the overnight low will fall between 18°C and 19°C.
The hottest days in La Unión will be Tuesday and Wednesday, with a maximum of 29°C; the coldest days will be Sunday, Monday and next Monday, with a maximum of 26°C.
Combining with the humidity, the maximum feel-like temperature may increase and vary between 26°C and a blazing 33°C.
Updated: Oct 31, 2026 @ 14:23:46 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Saturday, in La Unión, a pleasant, mostly sunny outlook is in place.

Today, the highest temperature will be 27°C, while the lowest temperature will be 18°C. The maximum heat index, which modifies the air temperature to account for humidity, is evaluated at 29°C.
The highest temperature today will be a couple of degrees higher than the average maximum temperature in October. Today, the lowest temperature will be in line with the average low temperature.

On Saturday, in La Unión, sunrise was at 05:52 and sunset will be at 17:28 (CST).

In La Unión, today, there will be 11h and 36min of daylight.

Tomorrow, in La Unión, high-altitude clouds may scatter across the sky, but the sun will still shine.

Tomorrow, the highest temperature in La Unión, Guatemala, will be 26°C, while the lowest temperature will be 19°C.
The highest temperature tomorrow will be in line with the average maximum temperature in October. Tomorrow, the lowest temperature will be moderately higher than the average low temperature.

On Sunday, in La Unión, sunrise will be at 05:53 and sunset at 17:28 (CST).

In La Unión, the length of the day tomorrow will be 11h and 35min.