Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
August, with average temperatures reaching a high of 98.2°F (36.8°C) and a low of 79.7°F (26.5°C), is the warmest month.Heat index
In August, the heat index is appraised at a blazing hot 122°F (50°C). Stay alert: Heat cramps and heat exhaustion are expected. Heatstroke is a likely outcome of ongoing activity.When assessing, remember that heat index measurements are for light winds and shaded spots. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.
Humidity
August is the least humid month, with an average relative humidity of 59%.Rainfall
In San Juan, during August, the rain falls for 6.9 days and regularly aggregates up to 0.71" (18mm) of precipitation. In San Juan, during the entire year, the rain falls for 94.1 days and collects up to 9.06" (230mm) of precipitation.Snowfall
February through December are months without snowfall.Daylight
The average length of the day in August is 13h and 2min.On the first day of the month, sunrise is at 6:58 am and sunset at 8:19 pm. On the last day of August, sunrise is at 7:12 am and sunset at 7:52 pm CDT.
Sunshine
In August, the average sunshine is 9.8h.UV index
July and August, with an average maximum UV index of 8, are months with the highest UV index. A UV Index reading of 8 to 10 represents a very high threat to health from unsafe exposure to UV radiation for average individuals.Note: A maximum high UV index of 8 in August translates into the following recommendations:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 minutes. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the hottest?
How hot does it get in August?
What is the least humid month?
What is the average humidity in August?
How much does it rain in August?
When it does not snow?
How many hours of daylight does San Juan have in August?
When is the sunrise / sunset in August?
How many hours of sunshine does San Juan have in August?
What are the months with the highest UV index?
How high is the UV index in August?
Average temperature in August
San Juan, TX
- Average high temperature in August: 98.2°F
The warmest month (with the highest average high temperature) is August (98.2°F).
The month with the lowest average high temperature is January (69.6°F).
- Average low temperature in August: 79.7°F
The month with the highest average low temperature is August (79.7°F).
The coldest month (with the lowest average low temperature) is January (53.4°F).
Average pressure in August
San Juan, TX
- Average pressure in August: 29.9"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are May and June (29.87"Hg).
Average wind speed in August
San Juan, TX
- Average wind speed in August: 10.9mph
The windiest month (with the highest average wind speed) is May (12.4mph).
The calmest month (with the lowest average wind speed) is September (8.9mph).
Average humidity in August
San Juan, TX
- Average humidity in August: 59%
The month with the highest relative humidity is May (69%).
The month with the lowest relative humidity is August (59%).
Average rainfall in August
San Juan, TX
- Average rainfall in August: 0.71"
The wettest month (with the highest rainfall) is September (1.46").
The driest months (with the least rainfall) are January and February (0.31").
Average rainfall days in August
San Juan, TX
- Average rainfall days in August: 6.9 days
The month with the highest number of rainy days is September (15.1 days).
The month with the least rainy days is February (5.4 days).
Average snowfall in August
San Juan, TX
- Average snowfall in August: 0"
The month with the highest snowfall is January (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in August
San Juan, TX
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in August /
Average sunshine in August
San Juan, TX
- Average daylight in August: 13h and 0min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in August: 9h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in August
San Juan, TX
- Average sunshine days in August: 22.9 days
The month with the most sunshine days is July (23 days).
The month with the least sunshine days is September (12.5 days).
Average UV index in August
San Juan, TX
- Average UV index in August: 8
The months with the highest UV index are July and August (UV index 8).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in August
San Juan, TX
- Average cloud cover in August: 18
The month with the most cloud cover is December (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in August
San Juan, TX
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
San Juan, Texas, USA
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