May weather forecast
Isla Vista, CA

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Weather in May

The last month of the spring, May, is a pleasant month in Isla Vista, California, with an average temperature fluctuating between 53.1°F (11.7°C) and 69.4°F (20.8°C).

Temperature

May's advent notes a subtle adjustment in average high-temperature to a pleasant 69.4°F (20.8°C) from April. During May, Isla Vista witnesses a consistent average low-temperature of 53.1°F (11.7°C).

Humidity

In Isla Vista, the average relative humidity in May is 62%.

Rainfall

In May, the rain falls for 2.4 days. Throughout May, 0.16" (4mm) of precipitation is accumulated. Throughout the year, there are 43.7 rainfall days, and 7.68" (195mm) of precipitation is accumulated.

Ocean temperature

In Isla Vista, in May, the average water temperature is 55.9°F (13.3°C).
Note: It is life-risking to swim in 55.9°F (13.3°C). Briefly staying in 55.4°F (13°C) waters feels unsettling, and temperatures below 50°F (10°C) might result in cold shock and loss of breath control, hinging on personal endurance.

Daylight

The average length of the day in May is 13h and 58min.
On the first day of the month, sunrise is at 6:08 am and sunset at 7:44 pm. On the last day of May, sunrise is at 5:48 am and sunset at 8:06 pm PDT.

Sunshine

In Isla Vista, the average sunshine in May is 11.7h.

UV index

In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 5 during May translates into the following guidance:
Put precautions into practice - Guidance to elude sunburn is provided. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Updated: Jul 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in May?

In May, the average high-temperature and low-temperature are 69.4°F (20.8°C) and 53.1°F (11.7°C) respectively.

What is the average humidity in May?

The average relative humidity in May is 62%.

How many days does it rain in May in Isla Vista?

In May, the rain falls for 2.4 days. Throughout May, 0.16" (4mm) of precipitation is accumulated.

What is the water temperature in May?

In Isla Vista, in May, the average water temperature is 55.9°F (13.3°C). Swimming in 55.9°F (13.3°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

How many hours of daylight does Isla Vista have in May?

In Isla Vista, the average day length in May is 13h and 58min.

When is the sunrise / sunset in May?

On the first day of May in Isla Vista, sunrise is at 6:08 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 8:06 pm PDT.

How long on average sun shines in May?

In Isla Vista, the average sunshine duration in May is 11.7h.

What is the UV index intensity in May?

The average daily maximum UV index in May in Isla Vista is 5. A UV Index value of 3 to 5 symbolizes 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
Isla Vista, CA

Average temperature in May - Isla Vista, CA
  • Average high temperature in May: 69.4°F

The warmest month (with the highest average high temperature) is August (79.2°F).
The month with the lowest average high temperature is December (60.6°F).

  • Average low temperature in May: 53.1°F

The month with the highest average low temperature is August (62.1°F).
The coldest month (with the lowest average low temperature) is February (47.7°F).

Average pressure in May
Isla Vista, CA

Average pressure in May - Isla Vista, CA
  • Average pressure in May: 29.96"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).

Average wind speed in May
Isla Vista, CA

Average wind speed in May - Isla Vista, CA
  • Average wind speed in May: 8mph

The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).

Average humidity in May
Isla Vista, CA

Average humidity in May - Isla Vista, CA
  • Average humidity in May: 62%

The month with the highest relative humidity is March (64%).
The months with the lowest relative humidity are September, October and November (56%).

Average rainfall in May
Isla Vista, CA

Average rainfall in May - Isla Vista, CA
  • Average rainfall in May: 0.16"

The wettest month (with the highest rainfall) is January (1.57").
The driest months (with the least rainfall) are June and August (0.08").

Average rainfall days in May
Isla Vista, CA

Average rainfall days in May - Isla Vista, CA
  • Average rainfall days in May: 2.4 days

The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is June (1.2 days).

Average sea temperature in May
Isla Vista, CA

Average sea temperature in May - Isla Vista, CA
  • Average sea temperature in May: 56°F

The best month for swimming (with the highest average sea temperature) is August (62.2°F).
The coldest month (with the lowest average sea temperature) is April (55.7°F).

Average daylight in May /
Average sunshine in May
Isla Vista, CA

Average daylight in May / Average sunshine in May - Isla Vista, CA
  • Average daylight in May: 14h and 0min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in May: 11h and 4min

The months with the most sunshine are June and July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).

Average sunshine days in May
Isla Vista, CA

Average sunshine days in May - Isla Vista, CA
  • Average sunshine days in May: 27.3 days

The month with the most sunshine days is August (28 days).
The month with the least sunshine days is February (21.6 days).

Average UV index in May
Isla Vista, CA

Average UV index in May - Isla Vista, CA
  • Average UV index in May: 5

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

Average cloud cover in May
Isla Vista, CA

Average cloud cover in May - Isla Vista, CA
  • Average cloud cover in May: 12

The month with the most cloud cover is March (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 5).

Average visibility in May
Isla Vista, CA

Average visibility in May - Isla Vista, 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).

Isla Vista, California, USA

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