May weather forecast and climate
Pismo Beach, CA

Weather in May

May, the last month of the spring, in Pismo Beach, is a pleasant month, with average temperature ranging between max 70.5°F (21.4°C) and min 51.4°F (10.8°C).

Temperature

In Pismo Beach, the average high-temperature is relatively the same as in April - a pleasant 70.5°F (21.4°C). The average low-temperature, in May, is 51.4°F (10.8°C).

Humidity

The average relative humidity in Pismo Beach is 65%.

Rainfall

In May, the rain falls for 3 days. Throughout May, 0.16" (4mm) of precipitation is accumulated. Throughout the year, in Pismo Beach, there are 47.6 rainfall days, and 6.93" (176mm) of precipitation is accumulated.

Ocean temperature

Months with the coldest seawater are April and May, with an average ocean temperature of 54.3°F (12.4°C).
Note: Swimming in 54.3°F (12.4°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

The average length of the day in Pismo Beach, California, is 14h.

Sunshine

The average sunshine in May is 11.4h.

UV index

The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 5 in May transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 May in Pismo Beach?

In May, in Pismo Beach, California, the average high-temperature is 70.5°F (21.4°C), and the average low-temperature is 51.4°F (10.8°C).

What is the average humidity in May in Pismo Beach?

In Pismo Beach, California, the average relative humidity in May is 65%.

How many days does it rain in May in Pismo Beach?

In Pismo Beach, California, during May, the rain falls for 3 days and regularly aggregates up to 0.16" (4mm) of precipitation.

What are the months with the coldest ocean in Pismo Beach?

April and May, with an average ocean temperature of 54.3°F (12.4°C), are months with the coldest seawater in Pismo Beach.

How cold is the water in May in Pismo Beach?

In Pismo Beach, in May, the average water temperature is 54.3°F (12.4°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

What is the average length of the day in May in Pismo Beach?

In Pismo Beach, California, the average length of the day in May is 14h.

How long on average sun shines in May in Pismo Beach?

The average sunshine in May in Pismo Beach, California, is 11.4h.

What is the UV index reading in May in Pismo Beach?

In May, the average daily maximum UV index in Pismo Beach is 5. A UV Index estimate of 3 to 5 represents a medium health risk from the exposure to the Sun's UV rays.

Average temperature in May
Pismo Beach, CA

Average temperature in May - Pismo Beach, CA
  • Average high temperature in May: 70.5°F

The warmest month (with the highest average high temperature) is September (79.5°F).
The month with the lowest average high temperature is December (61.2°F).

  • Average low temperature in May: 51.4°F

The month with the highest average low temperature is September (59.9°F).
The coldest month (with the lowest average low temperature) is February (46°F).

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Average pressure in May
Pismo Beach, CA

Average pressure in May - Pismo Beach, CA
  • Average pressure in May: 29.97"

The month with the highest atmospheric pressure is January (30.12").
Months with the lowest atmospheric pressure are June, August and September (29.91").

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Average wind speed in May
Pismo Beach, CA

Average wind speed in May - Pismo Beach, CA
  • Average wind speed in May: 7.3mph

The windiest months (with the highest average wind speed) are April and May (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

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Average humidity in May
Pismo Beach, CA

Average humidity in May - Pismo Beach, CA
  • Average humidity in May: 65%

The month with the highest relative humidity is March (68%).
The month with the lowest relative humidity is October (58%).

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Average rainfall in May
Pismo Beach, CA

Average rainfall in May - Pismo Beach, CA
  • Average rainfall in May: 0.16"

The wettest month (with the highest rainfall) is March (1.61").
The driest months (with the least rainfall) are June and August (0.04").

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Average rainfall days in May
Pismo Beach, CA

Average rainfall days in May - Pismo Beach, CA
  • Average rainfall days in May: 3 days

The month with the highest number of rainy days is March (8.4 days).
The month with the least rainy days is August (0.8 days).

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Average sea temperature in May
Pismo Beach, CA

Average sea temperature in May - Pismo Beach, CA
  • Average sea temperature in May: 54.4°F

The best months for swimming (with the highest average sea temperature) are August and October (58.6°F).
The coldest month (with the lowest average sea temperature) is April (54.3°F).

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Average daylight in May /
Average sunshine in May
Pismo Beach, CA

Average daylight in May / Average sunshine in May - Pismo Beach, CA
  • Average daylight in May: 14h

The month with the longest days is June (Average daylight: 14.5h).
The month with the shortest days is December (Average daylight: 9.8h).

  • Average sunshine in May: 11.4h

Months with the most sunshine are June, July and August (Average sunshine: 12h).
Months with the least sunshine are February and December (Average sunshine: 6.5).

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Average sunshine days in May
Pismo Beach, CA

Average sunshine days in May - Pismo Beach, CA
  • Average sunshine days in May: 27.2 days

The month with the most sunshine days is August (29.6 days).
The month with the least sunshine days is February (21 days).

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Average UV index in May
Pismo Beach, CA

Average UV index in May - Pismo Beach, CA
  • Average UV index in May: 5

Months with the highest UV index are June and August (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 May
Pismo Beach, CA

Average cloud cover in May - Pismo Beach, CA
  • Average cloud cover in May: 16

The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 6).

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Average visibility in May
Pismo Beach, CA

Average visibility in May - Pismo Beach, CA
  • Average visibility in May: 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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