May weather forecast
Big Sur, CA

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Weather in May

May indicates the arrival of a mellow warmth in Big Sur, nudging the thermometer slightly upwards by comparison with April's figures. Concluding the spring season, May sets the stage for the forthcoming summer with its temperate weather conditions. Rainfall becomes a sporadic visitor, witnessed only occasionally, dipping to 0.47" (12mm) divided across 4.2 days. Let every moment seep in as May showers paint a stunning canvas against an azure sky, making it a haven for photographers and nature lovers alike.

Temperature

The average high-temperature in Big Sur during May is a comfortable 61.9°F (16.6°C), almost matching the conditions of the preceding month. Big Sur's average low-temperature is measured at a fresh 50°F (10°C) during May.

Humidity

The average relative humidity in May in Big Sur is 78%.

Rainfall

In Big Sur, during May, the rain falls for 4.2 days and regularly aggregates up to 0.47" (12mm) of precipitation. Throughout the year, there are 70 rainfall days, and 11.93" (303mm) of precipitation is accumulated.

Ocean temperature

March through May, with an average ocean temperature of 53.6°F (12°C), are months with the coldest seawater in Big Sur.
Note: Swimming in 53.6°F (12°C) at temperatures under 50°F (10°C) requires thermal swimsuits; otherwise, one can face cold shock and breathing difficulty. Even brief immersion at 55.4°F (13°C) feels frosty.

Daylight

In May, the average length of the day in Big Sur is 14h and 7min.
On the first day of the month, sunrise is at 6:13 am and sunset at 7:55 pm. On the last day of May, sunrise is at 5:51 am and sunset at 8:19 pm PDT.

Sunshine

In Big Sur, the average sunshine in May is 10.6h.

UV index

The average daily maximum UV index in May in Big Sur is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: In May, the maximum UV index of 4 transforms into these recommendations:
Be vigilant - Preventing sunburn is recommended. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
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Frequently asked questions

What is the usual temperature for Big Sur in May?

An average high-temperature, in May, in Big Sur, is 61.9°F (16.6°C) and the average low-temperature is 50°F (10°C).

What is the average humidity in May in Big Sur?

In May, the average relative humidity in Big Sur, California, is 78%.

How much does it rain in Big Sur in May?

In Big Sur, California, during May, the rain falls for 4.2 days and regularly aggregates up to 0.47" (12mm) of precipitation.

What are the months with the coldest ocean in Big Sur?

March through May, with an average ocean temperature of 53.6°F (12°C), are months with the coldest seawater in Big Sur, California.

How cold is the water in May in Big Sur?

In May, the average ocean temperature in Big Sur is 53.6°F (12°C). Swimming in 53.6°F (12°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.

What is the average length of the day in May in Big Sur?

In Big Sur, the average day length in May is 14h and 7min.

What time are sunrise and sunset in May in Big Sur?

On the first day of May, sunrise is at 6:13 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 8:19 pm PDT.

How long on average sun shines in May in Big Sur?

In Big Sur, California, the average sunshine duration in May is 10.6h.

How high is the UV index in May in Big Sur?

In Big Sur, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability 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
Big Sur, CA

Average temperature in May - Big Sur, CA
  • Average high temperature in May: 61.9°F

The warmest month (with the highest average high temperature) is September (69.6°F).
The month with the lowest average high temperature is December (57°F).

  • Average low temperature in May: 50°F

The month with the highest average low temperature is September (55.4°F).
The coldest month (with the lowest average low temperature) is December (46.9°F).

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Average pressure in May
Big Sur, CA

Average pressure in May - Big Sur, CA
  • Average pressure in May: 29.99"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 (29.93"Hg).

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Average wind speed in May
Big Sur, CA

Average wind speed in May - Big Sur, CA
  • Average wind speed in May: 8.4mph

The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in May
Big Sur, CA

Average humidity in May - Big Sur, CA
  • Average humidity in May: 78%

The month with the highest relative humidity is August (79%).
The month with the lowest relative humidity is November (70%).

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Average rainfall in May
Big Sur, CA

Average rainfall in May - Big Sur, CA
  • Average rainfall in May: 0.47"

The wettest month (with the highest rainfall) is December (2.48").
The driest month (with the least rainfall) is August (0.04").

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Average rainfall days in May
Big Sur, CA

Average rainfall days in May - Big Sur, CA
  • Average rainfall days in May: 4.2 days

The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is August (1.3 days).

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Average sea temperature in May
Big Sur, CA

Average sea temperature in May - Big Sur, CA
  • Average sea temperature in May: 54°F

The best months for swimming (with the highest average sea temperature) are August, September and October (59°F).
The coldest months (with the lowest average sea temperature) are March, April and May (54°F).

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Average daylight in May /
Average sunshine in May
Big Sur, CA

Average daylight in May / Average sunshine in May - Big Sur, CA
  • Average daylight in May: 14h and 1min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in May: 10h and 4min

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 54min).

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Average sunshine days in May
Big Sur, CA

Average sunshine days in May - Big Sur, CA
  • Average sunshine days in May: 24.3 days

The month with the most sunshine days is August (27.8 days).
The month with the least sunshine days is March (17.3 days).

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Average UV index in May
Big Sur, CA

Average UV index in May - Big Sur, CA
  • Average UV index in May: 4

The months with the highest UV index are June, July, August and September (UV index 5).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in May
Big Sur, CA

Average cloud cover in May - Big Sur, CA
  • Average cloud cover in May: 27

The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 13).

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Average visibility in May
Big Sur, CA

Average visibility in May - Big Sur, 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).

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Big Sur, California, USA

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