October weather forecast and climate
San Clemente, CA

Weather in October

October, like September, is another pleasant autumn month in San Clemente, California, with temperature in the range of an average high of 73.2°F (22.9°C) and an average low of 60.4°F (15.8°C).

Temperature

In October, the average high-temperature is relatively the same as in September - an agreeable 73.2°F (22.9°C). In October, the average low-temperature is 60.4°F (15.8°C).

Humidity

In October, the average relative humidity in San Clemente, California, is 66%.

Rainfall

In San Clemente, in October, during 3.5 rainfall days, 0.2" (5mm) of precipitation is typically accumulated. In San Clemente, during the entire year, the rain falls for 51.1 days and collects up to 3.66" (93mm) of precipitation.

Ocean temperature

In October, the average ocean temperature is 64.9°F (18.3°C).
Note: For swimming, a surface water temperature of 64.9°F (18.3°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

Daylight

The average length of the day in San Clemente is 11.3h.

Sunshine

In October, the average sunshine in San Clemente is 8.3h.

UV index

In October, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. 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 average humidity in October in San Clemente?

In October, the average relative humidity in San Clemente, California, is 66%.

How many days does it rain in October in San Clemente?

In San Clemente, during October, the rain falls for 3.5 days and regularly aggregates up to 0.2" (5mm) of precipitation.

What is the ocean temperature in October in San Clemente?

In October, the average ocean temperature in San Clemente, California, is 64.9°F (18.3°C). For swimming, a surface water temperature of 64.9°F (18.3°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

What is the average length of the day in October in San Clemente?

In October, the average length of the day is 11.3h.

How long on average sun shines in October in San Clemente?

The average sunshine in October in San Clemente is 8.3h.

What is the UV index intensity in October in San Clemente?

In San Clemente, the average daily maximum UV index in October is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV radiation.

Average temperature in October
San Clemente, CA

Average temperature in October - San Clemente, CA
  • Average high temperature in October: 73.2°F

The warmest month (with the highest average high temperature) is September (77.4°F).
The month with the lowest average high temperature is December (62.6°F).

  • Average low temperature in October: 60.4°F

Months with the highest average low temperature are August and September (63.5°F).
The coldest month (with the lowest average low temperature) is February (49.6°F).

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Average pressure in October
San Clemente, CA

Average pressure in October - San Clemente, CA
  • Average pressure in October: 29.94"

The month with the highest atmospheric pressure is January (30.09").
The month with the lowest atmospheric pressure is June (29.88").

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Average wind speed in October
San Clemente, CA

Average wind speed in October - San Clemente, CA
  • Average wind speed in October: 5mph

The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are August and September (4.9mph).

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Average humidity in October
San Clemente, CA

Average humidity in October - San Clemente, CA
  • Average humidity in October: 66%

The month with the highest relative humidity is June (75%).
The month with the lowest relative humidity is November (60%).

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Average rainfall in October
San Clemente, CA

Average rainfall in October - San Clemente, CA
  • Average rainfall in October: 0.2"

The wettest month (with the highest rainfall) is December (0.71").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in October
San Clemente, CA

Average rainfall days in October - San Clemente, CA
  • Average rainfall days in October: 3.5 days

The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is June (1.4 days).

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Average sea temperature in October
San Clemente, CA

Average sea temperature in October - San Clemente, CA
  • Average sea temperature in October: 64.9°F

The best month for swimming (with the highest average sea temperature) is August (68.3°F).
The coldest months (with the lowest average sea temperature) are January and February (58.9°F).

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Average daylight in October /
Average sunshine in October
San Clemente, CA

Average daylight in October / Average sunshine in October - San Clemente, CA
  • Average daylight in October: 11.3h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in October: 8.3h

Months with the most sunshine are July and August (Average sunshine: 11.8h).
The month with the least sunshine is December (Average sunshine: 6.5h).

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Average sunshine days in October
San Clemente, CA

Average sunshine days in October - San Clemente, CA
  • Average sunshine days in October: 26 days

The month with the most sunshine days is October (26 days).
The month with the least sunshine days is February (21.6 days).

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Average UV index in October
San Clemente, CA

Average UV index in October - San Clemente, CA
  • Average UV index in October: 5

Months with the highest UV index are July, August and September (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 October
San Clemente, CA

Average cloud cover in October - San Clemente, CA
  • Average cloud cover in October: 18

Months with the most cloud cover are March and May (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 11).

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Average visibility in October
San Clemente, CA

Average visibility in October - San Clemente, CA
  • Average visibility in October: 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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