April weather forecast
Sonoma, CA

Neat rows of vines in a vineyard farm in Sonoma, California
Neat rows of vines in a vineyard farm in Sonoma, California

Weather in April

April, the same as March, is another enjoyable spring month in Sonoma, California, with temperature in the range of an average high of 66.7°F (19.3°C) and an average low of 45°F (7.2°C).

Temperature

In April, the average high-temperature slightly increases from 61.3°F (16.3°C) in March to a still comfortable 66.7°F (19.3°C). In Sonoma, in April, the average low-temperature is 45°F (7.2°C).

Humidity

The average relative humidity in April in Sonoma, California, is 71%.

Rainfall

In Sonoma, during April, the rain falls for 7.8 days and regularly aggregates up to 0.75" (19mm) of precipitation. Throughout the year, there are 73.3 rainfall days, and 15.47" (393mm) of precipitation is accumulated.

Daylight

In April, the average length of the day is 13h and 14min.
On the first day of the month, sunrise is at 6:54 am and sunset at 7:33 pm. On the last day of April, sunrise is at 6:13 am and sunset at 8:00 pm PDT.

Sunshine

In Sonoma, the average sunshine in April is 10h.

UV index

In Sonoma, the average daily maximum UV index in April is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The average daily UV index of 5 in April transform into the following instructions:
Take precautions - Protection against sunburn is recommended. 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 average humidity in April in Sonoma?

In Sonoma, the average relative humidity in April is 71%.

How much does it rain in Sonoma in April?

In Sonoma, California, in April, during 7.8 rainfall days, 0.75" (19mm) of precipitation is typically accumulated.

How many hours of daylight does Sonoma have in April?

In Sonoma, California, the average day length in April is 13h and 14min.

When is the sunrise / sunset in April in Sonoma?

In April, on the first day of the month, sunrise is at 6:54 am and sunset at 7:33 pm. On the last day of the month, in Sonoma, sunrise is at 6:13 am and sunset at 8:00 pm PDT.

How long on average sun shines in April in Sonoma?

In April, the average sunshine duration is 10h.

How high is the UV index in April in Sonoma?

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

Average temperature in April
Sonoma, CA

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

The warmest month (with the highest average high temperature) is August (82.9°F).
The month with the lowest average high temperature is December (55°F).

  • Average low temperature in April: 45°F

The month with the highest average low temperature is August (54.9°F).
The coldest month (with the lowest average low temperature) is December (41.4°F).

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Average pressure in April
Sonoma, CA

Average pressure in April - Sonoma, CA
  • Average pressure in April: 30.03"

The month with the highest atmospheric pressure is January (30.13").
The month with the lowest atmospheric pressure is June (29.91").

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Average wind speed in April
Sonoma, CA

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

The windiest month (with the highest average wind speed) is May (6.2mph).
The calmest month (with the lowest average wind speed) is November (4.4mph).

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Average humidity in April
Sonoma, CA

Average humidity in April - Sonoma, CA
  • Average humidity in April: 71%

The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is September (59%).

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Average rainfall in April
Sonoma, CA

Average rainfall in April - Sonoma, CA
  • Average rainfall in April: 0.75"

The wettest month (with the highest rainfall) is February (3.43").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in April
Sonoma, CA

Average rainfall days in April - Sonoma, CA
  • Average rainfall days in April: 7.8 days

The month with the highest number of rainy days is March (13.4 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
Sonoma, CA

Average daylight in April / Average sunshine in April - Sonoma, CA
  • Average daylight in April: 13h and 14min

The month with the longest days is June (Average daylight: 14h and 47min).
The month with the shortest days is December (Average daylight: 9h and 33min).

  • Average sunshine in April: 10h

The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 5.6h).

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Average sunshine days in April
Sonoma, CA

Average sunshine days in April - Sonoma, CA
  • Average sunshine days in April: 21.3 days

The month with the most sunshine days is July (28.7 days).
The month with the least sunshine days is March (16.1 days).

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Average UV index in April
Sonoma, CA

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

The months with the highest UV index are June and July (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
Sonoma, CA

Average cloud cover in April - Sonoma, CA
  • Average cloud cover in April: 30

The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is July (Cloud cover 8).

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Average visibility in April
Sonoma, CA

Average visibility in April - Sonoma, 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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