April weather forecast and climate
Tustin, CA

Weather in April

April in Tustin, California, is a pleasant spring month, with average temperature ranging between max 68.7°F (20.4°C) and min 54.1°F (12.3°C).

Temperature

In April, the average high-temperature is relatively the same as in March - a pleasant 68.7°F (20.4°C). The average low-temperature, is 54.1°F (12.3°C).

Humidity

In April, the average relative humidity in Tustin, California, is 65%.

Rainfall

In Tustin, California, it is raining for 5.6 days, with typically 0.35" (9mm) of accumulated precipitation. In Tustin, during the entire year, the rain falls for 51.9 days and collects up to 4.13" (105mm) of precipitation.

Daylight

The average length of the day is 13.1h.

Sunshine

The average sunshine in Tustin is 11h.

UV index

In April, the average daily maximum UV index in Tustin is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 5 in April transform into the following instructions:
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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in April in Tustin?

In Tustin, California, in April, the average high-temperature is 68.7°F (20.4°C), and the average low-temperature is 54.1°F (12.3°C).

What is the average humidity in April in Tustin?

In April, the average relative humidity in Tustin, California, is 65%.

How many days does it rain in April in Tustin?

In Tustin, in April, it is raining for 5.6 days, with typically 0.35" (9mm) of accumulated precipitation.

How many hours of daylight does Tustin have in April?

In Tustin, California, the average length of the day in April is 13.1h.

How long on average sun shines in April in Tustin?

In Tustin, the average sunshine in April is 11h.

What is the UV index intensity in April in Tustin?

In Tustin, the average daily maximum UV index in April is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from unprotected exposure to the UV radiation.

Average temperature in April
Tustin, CA

Average temperature in April - Tustin, CA
  • Average high temperature in April: 68.7°F

The warmest month (with the highest average high temperature) is August (80.2°F).
The month with the lowest average high temperature is December (63.1°F).

  • Average low temperature in April: 54.1°F

The month with the highest average low temperature is August (65.1°F).
The coldest month (with the lowest average low temperature) is February (50.7°F).

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Average pressure in April
Tustin, CA

Average pressure in April - Tustin, CA
  • Average pressure in April: 29.96"

The month with the highest atmospheric pressure is January (30.1").
The month with the lowest atmospheric pressure is June (29.88").

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Average wind speed in April
Tustin, CA

Average wind speed in April - Tustin, CA
  • Average wind speed in April: 6mph

The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest months (with the lowest average wind speed) are August, September and October (4.8mph).

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Average humidity in April
Tustin, CA

Average humidity in April - Tustin, CA
  • Average humidity in April: 65%

The month with the highest relative humidity is June (70%).
The month with the lowest relative humidity is November (55%).

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Average rainfall in April
Tustin, CA

Average rainfall in April - Tustin, CA
  • Average rainfall in April: 0.35"

The wettest month (with the highest rainfall) is December (0.87").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in April
Tustin, CA

Average rainfall days in April - Tustin, CA
  • Average rainfall days in April: 5.6 days

The month with the highest number of rainy days is March (6.7 days).
The month with the least rainy days is June (1.3 days).

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Average daylight in April /
Average sunshine in April
Tustin, CA

Average daylight in April / Average sunshine in April - Tustin, CA
  • Average daylight in April: 13.1h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in April: 11h

Months with the most sunshine are July and August (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 6.7h).

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Average sunshine days in April
Tustin, CA

Average sunshine days in April - Tustin, CA
  • Average sunshine days in April: 21.7 days

The month with the most sunshine days is June (26.9 days).
The month with the least sunshine days is February (20.3 days).

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Average UV index in April
Tustin, CA

Average UV index in April - Tustin, CA
  • Average UV index in April: 5

Months with the highest UV index are June, July, August and September (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 4).

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Average cloud cover in April
Tustin, CA

Average cloud cover in April - Tustin, CA
  • Average cloud cover in April: 20

Months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 6).

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Average visibility in April
Tustin, CA

Average visibility in April - Tustin, 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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