April weather forecast
Sebastopol, CA

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Weather in April

April in Sebastopol, California, is a comfortable spring month, with an average temperature ranging between max 64.9°F (18.3°C) and min 45.5°F (7.5°C).

Temperature

April's onset brings an average high-temperature of an enjoyable 64.9°F (18.3°C), showing a minute difference from March's 60.4°F (15.8°C). April nights observe an average temperature dip to a frosty 45.5°F (7.5°C).

Humidity

In Sebastopol, the average relative humidity in April is 72%.

Rainfall

In Sebastopol, California, in April, it is raining for 7 days, with typically 0.55" (14mm) of accumulated precipitation. In Sebastopol, during the entire year, the rain falls for 72.8 days and collects up to 12.01" (305mm) of precipitation.

Daylight

The average length of the day in April is 13h and 14min.
On the first day of the month, sunrise is at 6:54 am and sunset at 7:35 pm. On the last day of April, sunrise is at 6:14 am and sunset at 8:02 pm PDT.

Sunshine

In Sebastopol, the average sunshine in April is 10.1h.

UV index

In April, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 5 during April translates into the following directions:
Be vigilant - A duty to shield skin and eyes from injury exists. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Updated: Aug 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are April temperatures?

During April, Sebastopol experiences an average high-temperature of 64.9°F (18.3°C) and a low-temperature of 45.5°F (7.5°C).

What is the average humidity in April?

In April, the average relative humidity is 72%.

How many days does it rain in April?

In Sebastopol, in April, it is raining for 7 days, with typically 0.55" (14mm) of accumulated precipitation.

How many hours of daylight does Sebastopol have in April?

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

When are sunrise and sunset in April?

On the first day of April, sunrise is at 6:54 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 6:14 am and sunset at 8:02 pm PDT.

How long on average sun shines in April?

The average sunshine duration in April is 10.1h.

What is the UV index reading in April in Sebastopol?

In April, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health risk 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
Sebastopol, CA

Average temperature in April - Sebastopol, CA
  • Average high temperature in April: 64.9°F

The warmest month (with the highest average high temperature) is August (79.7°F).
The month with the lowest average high temperature is December (55.6°F).

  • Average low temperature in April: 45.5°F

The months with the highest average low temperature are August and September (54.7°F).
The coldest month (with the lowest average low temperature) is December (41.9°F).

Average pressure in April
Sebastopol, CA

Average pressure in April - Sebastopol, CA
  • Average pressure in April: 30.03"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).

Average wind speed in April
Sebastopol, CA

Average wind speed in April - Sebastopol, CA
  • Average wind speed in April: 7mph

The windiest month (with the highest average wind speed) is May (7.1mph).
The calmest month (with the lowest average wind speed) is November (4.9mph).

Average humidity in April
Sebastopol, CA

Average humidity in April - Sebastopol, CA
  • Average humidity in April: 72%

The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is September (63%).

Average rainfall in April
Sebastopol, CA

Average rainfall in April - Sebastopol, CA
  • Average rainfall in April: 0.55"

The wettest month (with the highest rainfall) is February (2.64").
The driest months (with the least rainfall) are July and August (0.04").

Average rainfall days in April
Sebastopol, CA

Average rainfall days in April - Sebastopol, CA
  • Average rainfall days in April: 7 days

The month with the highest number of rainy days is March (12.6 days).
The month with the least rainy days is August (0.8 days).

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

Average daylight in April / Average sunshine in April - Sebastopol, CA
  • Average daylight in April: 13h and 1min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in April: 10h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

Average sunshine days in April
Sebastopol, CA

Average sunshine days in April - Sebastopol, CA
  • Average sunshine days in April: 21.8 days

The month with the most sunshine days is July (27.2 days).
The month with the least sunshine days is March (17.1 days).

Average UV index in April
Sebastopol, CA

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

The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).

Average cloud cover in April
Sebastopol, CA

Average cloud cover in April - Sebastopol, CA
  • Average cloud cover in April: 29

The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is July (Cloud cover 9).

Average visibility in April
Sebastopol, CA

Average visibility in April - Sebastopol, 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).

Sebastopol, California, USA

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