April weather forecast and climate
San Jose, CA

A sunset panorama of the lit city of San Jose, California
A sunset panorama of the lit city of San Jose, California

Weather in April

April, the same as March, is another enjoyable spring month in San Jose, California, with average temperature varying between 45.5°F (7.5°C) and 66.7°F (19.3°C).

Temperature

In April, the average high-temperature is relatively the same as in March - a still enjoyable 66.7°F (19.3°C). In San Jose, in April, the average low-temperature is 45.5°F (7.5°C).

Humidity

The average relative humidity in San Jose is 69%.

Rainfall

In San Jose, it is raining for 6.7 days, with typically 0.28" (7mm) of accumulated precipitation. In San Jose, during the entire year, the rain falls for 51.5 days and collects up to 4.06" (103mm) of precipitation.

Daylight

In San Jose, the average length of the day in April is 13.2h.

Sunshine

In San Jose, the average sunshine in April is 10.4h.

UV index

In San Jose, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to the Sun's UV rays for the average person.
Note: In April, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 temperature in April in San Jose?

In April, the average high-temperature is 66.7°F (19.3°C), and the average low-temperature is 45.5°F (7.5°C).

What is the average humidity in April in San Jose?

In San Jose, California, the average relative humidity in April is 69%.

How many days does it rain in April in San Jose?

In San Jose, during April, the rain falls for 6.7 days and regularly aggregates up to 0.28" (7mm) of precipitation.

How many hours of daylight does San Jose have in April?

In San Jose, the average length of the day in April is 13.2h.

How long on average sun shines in April in San Jose?

The average sunshine in April in San Jose, California, is 10.4h.

How high is the UV index in April in San Jose?

In April, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe exposure to the Sun's UV rays.

Average temperature in April
San Jose, CA

Average temperature in April - San Jose, CA
  • Average high temperature in April: 66.7°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is December (56.5°F).

  • Average low temperature in April: 45.5°F

The month with the highest average low temperature is August (56.5°F).
The coldest month (with the lowest average low temperature) is December (43°F).

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Average pressure in April
San Jose, CA

Average pressure in April - San Jose, 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
San Jose, CA

Average wind speed in April - San Jose, 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 months (with the lowest average wind speed) are September and October (4.4mph).

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Average humidity in April
San Jose, CA

Average humidity in April - San Jose, 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 (60%).

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Average rainfall in April
San Jose, CA

Average rainfall in April - San Jose, CA
  • Average rainfall in April: 0.28"

The wettest month (with the highest rainfall) is March (0.83").
The driest months (with the least rainfall) are June, July and August (0.04").

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Average rainfall days in April
San Jose, CA

Average rainfall days in April - San Jose, CA
  • Average rainfall days in April: 6.7 days

The month with the highest number of rainy days is March (9.8 days).
The month with the least rainy days is August (0.4 days).

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Average daylight in April /
Average sunshine in April
San Jose, CA

Average daylight in April / Average sunshine in April - San Jose, 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
San Jose, CA

Average sunshine days in April - San Jose, CA
  • Average sunshine days in April: 22.8 days

The month with the most sunshine days is August (29.7 days).
The month with the least sunshine days is March (19.5 days).

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Average UV index in April
San Jose, CA

Average UV index in April - San Jose, 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
San Jose, CA

Average cloud cover in April - San Jose, 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
San Jose, CA

Average visibility in April - San Jose, 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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