August weather forecast
Santa Clara, CA

englishespañol中文
Share

Weather in August

As the peak summer month, August, retains July's high temperatures in Santa Clara. There is a slight dip in the temperature highs, making the weather more temperate and comfortable. Rainfall remains almost unnoticed, providing optimal conditions for outdoor activities. The prevailing weather conditions accentuate the city's vivacious vibe, turning normally tranquil landscapes into bustling venues of summer frolic. The hum of excitement from busy beaches and packed outdoor venues is a testament to the quintessential August weather in Santa Clara.

Temperature

Santa Clara's average high-temperature in August is a still moderately hot 81.3°F (27.4°C), marking an insignificant difference from the 81.9°F (27.7°C) of July. In the month of August, Santa Clara witnesses a marked temperature drop at night, averaging a low of 56.3°F (13.5°C).

Heat index

During August, the heat index is appraised at 84.2°F (29°C). One might feel worn out with persistent exposure and activity, resulting in heat cramps.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.

Humidity

The average relative humidity in August 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

The average length of the day in August is 13h and 33min.
On the first day of the month, sunrise is at 6:13 am and sunset at 8:15 pm. On the last day of August, sunrise is at 6:38 am and sunset at 7:37 pm PDT.

Sunshine

The average sunshine in August is 12h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: In August, a daily maximum UV index of 6 leads to the following instructions:
Escape overexposure. People with light skin may incur burns in fewer than 20 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. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.

Frequently asked questions

What are August temperatures?

The high-temperature, in August, in Santa Clara, records 81.3°F (27.4°C), while the low-temperature is 56.3°F (13.5°C). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, is appraised at 84.2°F (29°C).

What is the average humidity in August?

In Santa Clara, the average relative humidity in August is 63%.

What is the driest month?

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.

How much does it rain in Santa Clara in August?

In Santa Clara, in August, during 0.8 rainfall days, 0.04" (1mm) of precipitation is typically accumulated.

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

The average day length in August is 13h and 33min.

When is the sunrise / sunset in August?

In August, on the first day of the month, sunrise is at 6:13 am and sunset at 8:15 pm. On the last day of the month, in Santa Clara, California, sunrise is at 6:38 am and sunset at 7:37 pm PDT.

How long on average sun shines in August?

The average sunshine duration in August is 12h.

What are the months with the highest UV index?

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

How high is the UV index in August?

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

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).

Average pressure in August
Santa Clara, CA

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

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

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).

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%).
The months with the lowest relative humidity are July and September (61%).

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").

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).

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: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in August: 12h and 0min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).

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).

Average UV index in August
Santa Clara, CA

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

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

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).

Average visibility in August
Santa Clara, CA

Average visibility in August - Santa Clara, CA
  • 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).

Santa Clara, California, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location