April weather forecast and climate
Santa Clara, CA

Weather in April

April, the same as March, is another comfortable spring month in Santa Clara, California, with temperature in the range of an average low of 45.5°F (7.5°C) and an average high of 66.7°F (19.3°C).

Temperature

In Santa Clara, the average high-temperature is essentially the same as in March - a still comfortable 66.7°F (19.3°C). In April, the average low-temperature is 45.5°F (7.5°C).

Humidity

The average relative humidity is 69%.

Rainfall

In April, the rain falls for 7.5 days. Throughout April, 0.67" (17mm) of precipitation is accumulated. Throughout the year, there are 70.2 rainfall days, and 9.8" (249mm) of precipitation is accumulated.

Daylight

The average length of the day in Santa Clara, California, is 13.2h.

Sunshine

The average sunshine in Santa Clara is 10.4h.

UV index

The average daily maximum UV index in Santa Clara is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: In April, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the average humidity in April in Santa Clara?

In April, the average relative humidity in Santa Clara, California, is 69%.

How many days does it rain in April in Santa Clara?

In Santa Clara, in April, during 7.5 rainfall days, 0.67" (17mm) of precipitation is typically accumulated.

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

The average length of the day in April is 13.2h.

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

The average sunshine in April in Santa Clara is 10.4h.

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

In Santa Clara, the average daily maximum UV index in April is 5. A UV Index reading of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV radiation.

Average temperature in April
Santa Clara, CA

Average temperature in April - Santa Clara, CA
  • Average high temperature in April: 66.7°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 April: 45.5°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 April
Santa Clara, CA

Average pressure in April - Santa Clara, CA
  • Average pressure in April: 30.04"

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 April
Santa Clara, CA

Average wind speed in April - Santa Clara, CA
  • Average wind speed in April: 5.8mph

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 April
Santa Clara, CA

Average humidity in April - Santa Clara, CA
  • Average humidity in April: 69%

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 April
Santa Clara, CA

Average rainfall in April - Santa Clara, CA
  • Average rainfall in April: 0.67"

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 April
Santa Clara, CA

Average rainfall days in April - Santa Clara, CA
  • Average rainfall days in April: 7.5 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 April /
Average sunshine in April
Santa Clara, CA

Average daylight in April / Average sunshine in April - Santa Clara, CA
  • Average daylight in April: 13.2h

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 April: 10.4h

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 April
Santa Clara, CA

Average sunshine days in April - Santa Clara, CA
  • Average sunshine days in April: 21.3 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 April
Santa Clara, CA

Average UV index in April - Santa Clara, CA
  • Average UV index in April: 5

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 April
Santa Clara, CA

Average cloud cover in April - Santa Clara, CA
  • Average cloud cover in April: 26

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 April
Santa Clara, CA

Average visibility in April - Santa Clara, CA
  • Average visibility in April: 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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