June weather forecast
San Antonio, TX

Buildings in San Antonio, Texas, with a calm view of the bridges across the waterfront
Buildings in San Antonio, Texas, with a calm view of the bridges across the waterfront

Weather in June

June, the first month of the summer in San Antonio, is a hot month, with temperature in the range of an average high of 92.1°F (33.4°C) and an average low of 72.7°F (22.6°C).

Temperature

In June, the average high-temperature slightly increases from a moderately hot 85.6°F (29.8°C) in May to a tropical 92.1°F (33.4°C). In June, the average low-temperature is 72.7°F (22.6°C).

Heat index

In June, the average heat index is computed to be a life-threatening hot 113°F (45°C). Be wary: Heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'real feel', or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like activity, clothing, differences in body mass, height, and shape, and wind affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The average relative humidity in June in San Antonio is 70%.

Rainfall

In June, the rain falls for 13.1 days. Throughout June, 2.09" (53mm) of precipitation is accumulated. In San Antonio, during the entire year, the rain falls for 144.5 days and collects up to 22.6" (574mm) of precipitation.

Snowfall

In San Antonio, snow does not fall in March through November.

Daylight

June has the longest days of the year, with an average of 14h and 0min of daylight.
On the first day of the month, sunrise is at 6:34 am and sunset at 8:29 pm. On the last day of June, sunrise is at 6:37 am and sunset at 8:37 pm CDT.

Sunshine

In June, the average sunshine in San Antonio is 9.3h.

UV index

The months with the highest UV index in San Antonio are June through August, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 7 in June interpret into the following advice:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in June in San Antonio?

In June, in San Antonio, Texas, the average high-temperature is 92.1°F (33.4°C), and the average low-temperature is 72.7°F (22.6°C). in June, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is computed to be 113°F (45°C).

What is the average humidity in June in San Antonio?

In San Antonio, Texas, the average relative humidity in June is 70%.

How many days does it rain in June in San Antonio?

In June, in San Antonio, Texas, the rain falls for 13.1 days. Throughout June, 2.09" (53mm) of precipitation is accumulated.

When it does not snow in San Antonio?

March through November are months without snowfall.

When are the longest days in San Antonio?

The month with the longest days in San Antonio, Texas, is June, with an average of 14h and 0min of daylight.

How many hours of daylight does San Antonio have in June?

The average day length in June is 14h and 0min.

What time are sunrise and sunset in June in San Antonio?

On the first day of June in San Antonio, sunrise is at 6:34 am and sunset at 8:29 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 8:37 pm CDT.

How long on average sun shines in June in San Antonio?

In June, the average sunshine duration in San Antonio is 9.3h.

What is the month with the highest UV index in San Antonio?

The months with the highest UV index in San Antonio, Texas, are June through August, with an average maximum UV index of 7.

What is the UV index intensity in June in San Antonio?

The average daily maximum UV index in June is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in June
San Antonio, TX

Average temperature in June - San Antonio, TX
  • Average high temperature in June: 92.1°F

The warmest month (with the highest average high temperature) is August (96.6°F).
The month with the lowest average high temperature is January (61.7°F).

  • Average low temperature in June: 72.7°F

The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).

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Average pressure in June
San Antonio, TX

Average pressure in June - San Antonio, TX
  • Average pressure in June: 29.89"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in June
San Antonio, TX

Average wind speed in June - San Antonio, TX
  • Average wind speed in June: 8mph

The windiest month (with the highest average wind speed) is May (9mph).
The calmest month (with the lowest average wind speed) is September (6.5mph).

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Average humidity in June
San Antonio, TX

Average humidity in June - San Antonio, TX
  • Average humidity in June: 70%

The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (59%).

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Average rainfall in June
San Antonio, TX

Average rainfall in June - San Antonio, TX
  • Average rainfall in June: 2.09"

The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is February (0.98").

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Average rainfall days in June
San Antonio, TX

Average rainfall days in June - San Antonio, TX
  • Average rainfall days in June: 13.1 days

The month with the highest number of rainy days is September (17 days).
The month with the least rainy days is January (9.1 days).

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Average snowfall in June
San Antonio, TX

Average snowfall in June - San Antonio, TX
  • Average snowfall in June: 0"

The months with the highest snowfall are January and February (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in June
San Antonio, TX

Average snowfall days in June - San Antonio, TX
  • Average snowfall days in June: 0 days

The months with the highest number of snowfall days are January and February (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

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Average daylight in June /
Average sunshine in June
San Antonio, TX

Average daylight in June / Average sunshine in June - San Antonio, TX
  • Average daylight in June: 14h and 0min

The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).

  • Average sunshine in June: 9h and 18min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

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Average sunshine days in June
San Antonio, TX

Average sunshine days in June - San Antonio, TX
  • Average sunshine days in June: 14.2 days

The month with the most sunshine days is January (20.3 days).
The months with the least sunshine days are May and September (11.8 days).

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Average UV index in June
San Antonio, TX

Average UV index in June - San Antonio, TX
  • Average UV index in June: 7

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in June
San Antonio, TX

Average cloud cover in June - San Antonio, TX
  • Average cloud cover in June: 37

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 23).

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Average visibility in June
San Antonio, TX

Average visibility in June - San Antonio, TX
  • Average visibility in June: 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).

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