April weather forecast
San Jose, CA

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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 marks the full swing of spring with warmer temperatures in San Jose. This month is considerably drier than March, and the city enjoys an increased amount of sunshine. However, the outstanding characteristic of April is rather the significant rise in its UV index, now at 5, indicating the intensifying sun. Spring shows its vibrant colors and sunny expressions in April, offering a pleasant climate for outdoor activities.

Temperature

San Jose's weather, upon April's arrival, documents an average high-temperature of a still enjoyable 66.7°F (19.3°C), nearly identical to the prior month. San Jose records an average nighttime low of 45.5°F (7.5°C) in April.

Humidity

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

Rainfall

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

The average length of the day in April is 13h and 11min.
On the first day of the month, sunrise is at 6:51 am and sunset at 7:30 pm. On the last day of April, sunrise is at 6:12 am and sunset at 7:56 pm PDT.

Sunshine

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

UV index

The average daily maximum UV index in April is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.
Note: In April, the maximum UV index of 5 translates into these guidelines:
Guard yourself - An obligation to protect skin and eyes from harm exists. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
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Frequently asked questions

What is the usual temperature for San Jose in April?

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

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

In April, in San Jose, the rain falls for 6.7 days. Throughout April, 0.28" (7mm) of precipitation is accumulated.

What is the average length of the day in April in San Jose?

The average day length in April in San Jose is 13h and 11min.

When are sunrise and sunset in April in San Jose?

On the first day of April, sunrise is at 6:51 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:12 am and sunset at 7:56 pm PDT.

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

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

What is the UV index intensity in April in San Jose?

In San Jose, the average daily maximum UV index in April is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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"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).

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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%).
The 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: 13h and 1min

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 April: 10h and 2min

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).

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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

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).

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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

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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San Jose, California, USA

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