August weather forecast
San Andrés, Guatemala

August

Weather in August

August, the last month of the summer in San Andrés, is also a hot month, with temperature in the range of an average high of 33.4°C (92.1°F) and an average low of 21.6°C (70.9°F).

Temperature

San Andrés experiences a minor change to a still hot 33.4°C (92.1°F) in average high-temperature during August, closely reflecting July. An average temperature of 21.6°C (70.9°F) marks the nights in August.

Heat index

August's heat index is appraised at a life-threatening hot 49°C (120.2°F). Precaution: Heat cramps along with heat exhaustion are possible. Heatstroke is a serious risk with continued exertion.
Heat index readings emphasize conditions of light breezes and shaded spots. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In August, the average relative humidity is 79%.

Rainfall

In August, the rain falls for 25.3 days. Throughout August, 109mm (4.29") of precipitation is accumulated. In San Andrés, Guatemala, during the entire year, the rain falls for 227.8 days and collects up to 871mm (34.29") of precipitation.

Daylight

The average length of the day in August is 12h and 41min.
On the first day of August, sunrise is at 05:39 and sunset at 18:32. On the last day of the month, sunrise is at 05:46 and sunset at 18:13 CST.

Sunshine

In August, the average sunshine is 8.4h.

UV index

The average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 6 in August transforms into the following instructions:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.

Frequently asked questions

How hot is it in August?
During August, San Andrés experiences an average high-temperature of 33.4°C (92.1°F) and a low-temperature of 21.6°C (70.9°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is appraised at 49°C (120.2°F).
What is the average humidity in August?
The average relative humidity in August is 79%.
How much does it rain in August?
In San Andrés, in August, during 25.3 rainfall days, 109mm (4.29") of precipitation is typically accumulated.
How many hours of daylight does San Andrés have in August?
The average day length in August is 12h and 41min.
What time are sunrise and sunset in August in San Andrés?
In August, on the first day of the month, sunrise is at 05:39 and sunset at 18:32. On the last day of the month, in San Andrés, sunrise is at 05:46 and sunset at 18:13 CST.
How many hours of sunshine does San Andrés have in August?
The average sunshine duration in August is 8.4h.
What is the UV index reading in August?
In August, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in August
San Andrés, Guatemala
  • Average high temperature in August: 33.4°C

The warmest month (with the highest average high temperature) is April (35.5°C).
The month with the lowest average high temperature is January (27.4°C).

  • Average low temperature in August: 21.6°C

The month with the highest average low temperature is May (22.5°C).
The coldest month (with the lowest average low temperature) is January (17.1°C).

Average pressure in August
San Andrés, Guatemala
  • Average pressure in August: 1012.9mbar

The month with the highest atmospheric pressure is January (1017.5mbar).
The month with the lowest atmospheric pressure is September (1011.8mbar).

Average wind speed in August
San Andrés, Guatemala
  • Average wind speed in August: 4.8km/h

The windiest month (with the highest average wind speed) is April (5.7km/h).
The calmest months (with the lowest average wind speed) are October, November and December (4.2km/h).

Average humidity in August
San Andrés, Guatemala
  • Average humidity in August: 79%

The months with the highest relative humidity are October, November and December (85%).
The month with the lowest relative humidity is April (67%).

Average rainfall in August
San Andrés, Guatemala
  • Average rainfall in August: 109mm

The wettest month (with the highest rainfall) is June (161mm).
The driest month (with the least rainfall) is February (19mm).

Average rainfall days in August
San Andrés, Guatemala
  • Average rainfall days in August: 25.3 days

The month with the highest number of rainy days is September (26.8 days).
The month with the least rainy days is February (11.4 days).

Average daylight in August /
Average sunshine in August
San Andrés, Guatemala
  • Average daylight in August: 12h and 4min

The month with the longest days is June (Average daylight: 13h and 6min).
The month with the shortest days is December (Average daylight: 11h and 6min).

  • Average sunshine in August: 8h and 2min

The month with the most sunshine is April (Average sunshine: 10h and 6min).
The months with the least sunshine are January and November (Average sunshine: 4h and 54min).

Average sunshine days in August
San Andrés, Guatemala
  • Average sunshine days in August: 3.9 days

The month with the most sunshine days is March (16.8 days).
The month with the least sunshine days is September (1.7 days).

Average UV index in August
San Andrés, Guatemala
  • Average UV index in August: 6

The months with the highest UV index are March, April, May, June and July (UV index 7).
The month with the lowest UV index is January (UV index 5).

Average cloud cover in August
San Andrés, Guatemala
  • Average cloud cover in August: 54

The month with the most cloud cover is November (Cloud cover 65).
The month with the least cloud cover is April (Cloud cover 35).

Average visibility in August
San Andrés, Guatemala
  • Average visibility in August: 7km

The months with the highest visibility are March, April and May (8km).
The months with the lowest visibility are January, September, October, November and December (6km).

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