May weather forecast
Sebastopol, CA

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Weather in May

May, the last month of the spring in Sebastopol, is a pleasant month, with an average temperature fluctuating between 48.6°F (9.2°C) and 69.1°F (20.6°C).

Temperature

In May, Sebastopol experiences a minor shift in meteorological conditions with average high-temperatures marked at a pleasant 69.1°F (20.6°C), closely mirroring the climate in April. An average low-temperature of 48.6°F (9.2°C) is expected during May.

Humidity

The average relative humidity in May is 70%.

Rainfall

In May, the rain falls for 5.3 days. Throughout May, 0.55" (14mm) of precipitation is accumulated. Throughout the year, there are 72.8 rainfall days, and 12.01" (305mm) of precipitation is accumulated.

Daylight

The average length of the day in May is 14h and 17min.
On the first day of the month, sunrise is at 6:13 am and sunset at 8:03 pm. On the last day of May, sunrise is at 5:49 am and sunset at 8:29 pm PDT.

Sunshine

In May, the average sunshine is 10.5h.

UV index

In Sebastopol, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The daily high UV index of 5 in May translates into this advice:
Guard yourself - Precautionary measures against sun damage are advocated. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Boost your sun resistance with garments that are densely woven yet spacious.
Updated: Aug 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Sebastopol in May?

During May, Sebastopol experiences an average high-temperature of 69.1°F (20.6°C) and a low-temperature of 48.6°F (9.2°C).

What is the average humidity in May in Sebastopol?

In May, the average relative humidity is 70%.

How much does it rain in May?

In Sebastopol, during May, the rain falls for 5.3 days and regularly aggregates up to 0.55" (14mm) of precipitation.

How many hours of daylight does Sebastopol have in May?

The average day length in May is 14h and 17min.

When is the sunrise / sunset in May?

In May, on the first day of the month, sunrise is at 6:13 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 8:29 pm PDT.

How many hours of sunshine does Sebastopol have in May?

The average sunshine duration in May is 10.5h.

What is the UV index intensity in May?

In Sebastopol, California, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Sebastopol, CA

Average temperature in May - Sebastopol, CA
  • Average high temperature in May: 69.1°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 May: 48.6°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 May
Sebastopol, CA

Average pressure in May - Sebastopol, CA
  • Average pressure in May: 29.98"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 May
Sebastopol, CA

Average wind speed in May - Sebastopol, CA
  • Average wind speed in May: 7.1mph

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 May
Sebastopol, CA

Average humidity in May - Sebastopol, CA
  • Average humidity in May: 70%

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

Average rainfall in May
Sebastopol, CA

Average rainfall in May - Sebastopol, CA
  • Average rainfall in May: 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 May
Sebastopol, CA

Average rainfall days in May - Sebastopol, CA
  • Average rainfall days in May: 5.3 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 May /
Average sunshine in May
Sebastopol, CA

Average daylight in May / Average sunshine in May - Sebastopol, CA
  • Average daylight in May: 14h and 2min

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 May: 10h and 3min

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 May
Sebastopol, CA

Average sunshine days in May - Sebastopol, CA
  • Average sunshine days in May: 23.4 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 May
Sebastopol, CA

Average UV index in May - Sebastopol, CA
  • Average UV index in May: 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 May
Sebastopol, CA

Average cloud cover in May - Sebastopol, CA
  • Average cloud cover in May: 26

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 May
Sebastopol, CA

Average visibility in May - Sebastopol, CA
  • Average visibility in May: 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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