Weather forecast for 10 daysLa Unión, Guatemala
Weather forecast for the weekend
Saturday 31. Oct 2026
- 28°C
- 17°C
Mostly Sunny
- Precip. probability: 7%
- Precipitation: 0mm
- Wind: 18km/hNNE 30°
- Humidity: 74%
- UV index: 11
- Sunrise: 05:52 CST
- Sunset: 17:28 CST
- details ▼
Today, on Saturday, 31st of October, sunshine will take center stage, with just faint traces of clouds.
The temperature will vary between a maximum of a moderately hot 28°C and a minimum of a comfortable 17°C.
The maximum heat index, which integrates air moisture with ambient temperature, is calculated to be a humid 31°C. Note that heat index values are valued for light wind and location in the shade.
The forecasted temperature is a couple of degrees higher than October's regular maximum of 24.5°C.
Sunrise will be at 05:52 and sunset at 17:28; the daylight will last for 11h and 36min.
The temperature will vary between a maximum of a moderately hot 28°C and a minimum of a comfortable 17°C.
The maximum heat index, which integrates air moisture with ambient temperature, is calculated to be a humid 31°C. Note that heat index values are valued for light wind and location in the shade.
The forecasted temperature is a couple of degrees higher than October's regular maximum of 24.5°C.
Sunrise will be at 05:52 and sunset at 17:28; the daylight will last for 11h and 36min.
Sunday 1. Nov 2026
- 26°C
- 19°C
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0mm
- Wind: 20km/hNNE 25°
- Humidity: 76%
- UV index: 11
- Sunrise: 05:53 CST
- Sunset: 17:28 CST
- details ▼
On Sunday, in La Unión, occasional clouds will pass by, but expect bright spells.
The temperature will vary between a maximum of a temperate 26°C and a minimum of a breezy 19°C.
The expected daytime maximum should align with the typical October high of 24.5°C.
Sunrise will be at 05:53 and sunset at 17:28; tomorrow's daylight will last for 11h and 35min.
The temperature will vary between a maximum of a temperate 26°C and a minimum of a breezy 19°C.
The expected daytime maximum should align with the typical October high 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.
Minimum temperature: 26°C.
Chance of precipitation
Highest chance: Monday 09.11. 57%.
Long-term weather forecast
- Saturday
- 31. Oct 2026
- 28°C
- 17°C
Mostly Sunny
- Precip. probability: 7%
- Precipitation: 0mm
- Wind: 18km/hNNE 30°
- Humidity: 74%
- UV index: 11
- Sunrise: 05:52 CST
- Sunset: 17:28 CST
- details ▼
- Sunday
- 1. Nov 2026
- 26°C
- 19°C
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0mm
- Wind: 20km/hNNE 25°
- Humidity: 76%
- UV index: 11
- Sunrise: 05:53 CST
- Sunset: 17:28 CST
- details ▼
- Monday
- 2. Nov 2026
- 27°C
- 17°C
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0mm
- Wind: 20km/hNNE 25°
- Humidity: 76%
- UV index: 11
- Sunrise: 05:53 CST
- Sunset: 17:28 CST
- details ▼
- Tuesday
- 3. Nov 2026
- 29°C
- 18°C
Mostly Sunny
- Precip. probability: 8%
- Precipitation: 0mm
- Wind: 15km/hNNE 22°
- Humidity: 69%
- UV index: 11
- Sunrise: 05:53 CST
- Sunset: 17:27 CST
- details ▼
- Wednesday
- 4. Nov 2026
- 29°C
- 18°C
Partly Cloudy
- Precip. probability: 18%
- Precipitation: 0mm
- Wind: 16km/hNNE 21°
- Humidity: 69%
- UV index: 10
- Sunrise: 05:54 CST
- Sunset: 17:27 CST
- details ▼
- Thursday
- 5. Nov 2026
- 28°C
- 18°C
Partly Cloudy
- Precip. probability: 18%
- Precipitation: 0mm
- Wind: 16km/hNNE 22°
- Humidity: 70%
- UV index: 10
- Sunrise: 05:54 CST
- Sunset: 17:27 CST
- details ▼
- Friday
- 6. Nov 2026
- 28°C
- 18°C
PM Showers
- Precip. probability: 30%
- Precipitation: 1mm
- Wind: 16km/hNNE 23°
- Humidity: 68%
- UV index: 11
- Sunrise: 05:54 CST
- Sunset: 17:26 CST
- details ▼
- Saturday
- 7. Nov 2026
- 28°C
- 18°C
Partly Cloudy
- Precip. probability: 24%
- Precipitation: 0mm
- Wind: 16km/hNNE 22°
- Humidity: 69%
- UV index: 10
- Sunrise: 05:55 CST
- Sunset: 17:26 CST
- details ▼
- Sunday
- 8. Nov 2026
- 27°C
- 18°C
PM Showers
- Precip. probability: 41%
- Precipitation: 3mm
- Wind: 16km/hNNE 21°
- Humidity: 70%
- UV index: 10
- Sunrise: 05:55 CST
- Sunset: 17:26 CST
- details ▼
- Monday
- 9. Nov 2026
- 26°C
- 18°C
Showers
- Precip. probability: 57%
- Precipitation: 5mm
- Wind: 17km/hNNE 20°
- Humidity: 74%
- UV index: 9
- Sunrise: 05:56 CST
- Sunset: 17:25 CST
- details ▼
Models point to a combination of cloudy, rain-soaked and bright weather is anticipated.
Rainfall is forecasted for Friday, next Sunday and Monday.
The high temperatures are expected to remain largely stable in the upcoming days. Expected highs will hover between 26°C and 29°C, while fluctuations in the night’s lowest temperature will be also minimal, as the lowest temperatures will remain in the range of 17°C to 19°C.
With a maximum temperature of 29°C, Tuesday and Wednesday will be the hottest days in La Unión; the coldest days will be Sunday and next Monday, with a maximum of 26°C.
Taking the humidity into consideration, the maximum feel-like temperature may increase and range between 26°C and a tropical 33°C.
Rainfall is forecasted for Friday, next Sunday and Monday.
The high temperatures are expected to remain largely stable in the upcoming days. Expected highs will hover between 26°C and 29°C, while fluctuations in the night’s lowest temperature will be also minimal, as the lowest temperatures will remain in the range of 17°C to 19°C.
With a maximum temperature of 29°C, Tuesday and Wednesday will be the hottest days in La Unión; the coldest days will be Sunday and next Monday, with a maximum of 26°C.
Taking the humidity into consideration, the maximum feel-like temperature may increase and range between 26°C and a tropical 33°C.
Updated: Oct 31, 2026 @ 11:46:35 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Today, sunshine will lead the day, with clouds making only brief appearances.
Today, the maximum temperature in La Unión will be 28°C, while the minimum temperature will be 17°C. The maximum heat index, which calculates the temperature value influenced by the moisture in the air, is assessed at 31°C.
The maximum temperature today will be slightly warmer than the average highest temperature in October. Today, the lowest temperature will be in line with the average low temperature.
The maximum temperature today will be slightly warmer than the average highest temperature in October. Today, the lowest temperature will be in line with the average low temperature.
On Saturday, in La Unión, sunrise will be at 05:52 and sunset at 17:28 (CST).
In La Unión, today, there will be 11h and 36min of daylight.
Tomorrow, moments of sunshine will break through the patchy clouds.
Tomorrow, the highest temperature will be 26°C, while the lowest temperature will be 19°C.
The highest temperature will be in line with the average maximum of 24.5°C in October. The lowest temperature will be moderately higher than the average low of 16.5°C.
The highest temperature will be in line with the average maximum of 24.5°C in October. The lowest temperature will be moderately higher than the average low of 16.5°C.
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.





