August weather forecast and climate
Santa Clara, CA

Weather in August

August, the last month of the summer, in Santa Clara, is another warm month, with average temperature varying between 81.3°F (27.4°C) and 56.3°F (13.5°C).

Temperature

In August, the average high-temperature is practically the same as in July - a still warm 81.3°F (27.4°C). In August, the average low-temperature is 56.3°F (13.5°C).

Heat index

In August, the average heat index is estimated at 84°F (28.9°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. 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', 'real feel', 'feels like', or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (clothing, metabolic differences, differences in body mass, height, and shape), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

The average relative humidity is 63%.

Rainfall

July and August are months with the least rain when the rain falls for 0.8 days and typically aggregates up to 0.04" (1mm) of rain.

Daylight

In August, the average length of the day is 13.5h.

Sunshine

In August, the average sunshine in Santa Clara, California, is 12h.

UV index

Months with the highest UV index in Santa Clara are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 6 in August interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in August in Santa Clara?

In August, in Santa Clara, the average high-temperature is 81.3°F (27.4°C), and the average low-temperature is 56.3°F (13.5°C). In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), that factores the actual air temperature with the relative humidity, is calculated to 84°F (28.9°C).

What is the average humidity in August in Santa Clara?

The average relative humidity in August in Santa Clara, California, is 63%.

How much does it rain in Santa Clara in August?

In Santa Clara, California, in August, it is raining for 0.8 days, with typically 0.04" (1mm) of accumulated precipitation.

What is the driest month in Santa Clara?

July and August are months with the least rain in Santa Clara when the rain falls for 0.8 days and typically aggregates up to 0.04" (1mm) of rain.

How many hours of daylight does Santa Clara have in August?

In August, the average length of the day in Santa Clara, California, is 13.5h.

How long on average sun shines in August in Santa Clara?

In Santa Clara, California, the average sunshine in August is 12h.

What is the month with the highest UV index in Santa Clara?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Santa Clara.

How high is the UV index in August in Santa Clara?

The average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health threat from unprotected exposure to the UV radiation.

Average temperature in August
Santa Clara, CA

Average temperature in August - Santa Clara, CA
  • Average high temperature in August: 81.3°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is December (56.7°F).

  • Average low temperature in August: 56.3°F

The month with the highest average low temperature is August (56.3°F).
The coldest months (with the lowest average low temperature) are January and February (43.3°F).

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Average pressure in August
Santa Clara, CA

Average pressure in August - Santa Clara, CA
  • Average pressure in August: 29.92"

The month with the highest atmospheric pressure is January (30.13").
Months with the lowest atmospheric pressure are June, August and September (29.92").

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Average wind speed in August
Santa Clara, CA

Average wind speed in August - Santa Clara, CA
  • Average wind speed in August: 4.5mph

The windiest months (with the highest average wind speed) are April and May (5.8mph).
The calmest month (with the lowest average wind speed) is September (4.4mph).

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Average humidity in August
Santa Clara, CA

Average humidity in August - Santa Clara, CA
  • Average humidity in August: 63%

The month with the highest relative humidity is March (73%).
Months with the lowest relative humidity are July and September (61%).

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Average rainfall in August
Santa Clara, CA

Average rainfall in August - Santa Clara, CA
  • Average rainfall in August: 0.04"

The wettest month (with the highest rainfall) is March (1.77").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in August
Santa Clara, CA

Average rainfall days in August - Santa Clara, CA
  • Average rainfall days in August: 0.8 days

The month with the highest number of rainy days is March (12.9 days).
The month with the least rainy days is August (0.8 days).

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Average daylight in August /
Average sunshine in August
Santa Clara, CA

Average daylight in August / Average sunshine in August - Santa Clara, CA
  • Average daylight in August: 13.5h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in August: 12h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6h).

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Average sunshine days in August
Santa Clara, CA

Average sunshine days in August - Santa Clara, CA
  • Average sunshine days in August: 29.2 days

The month with the most sunshine days is August (29.2 days).
The month with the least sunshine days is March (16.7 days).

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Average UV index in August
Santa Clara, CA

Average UV index in August - Santa Clara, CA
  • Average UV index in August: 6

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in August
Santa Clara, CA

Average cloud cover in August - Santa Clara, CA
  • Average cloud cover in August: 7

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 6).

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Average visibility in August
Santa Clara, CA

Average visibility in August - Santa Clara, CA
  • Average visibility in August: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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