San Clemente
California, USA
Long-term weather forecast
Long-term weather forecast

October weather forecast and climate
San Clemente, CA

October, the same as September, in San Clemente, California, is an agreeable autumn month, with average temperature varying between 60.4°F (15.8°C) and 73.2°F (22.9°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

The average relative humidity in San Clemente is 66%.

Rainfall

In October, in San Clemente, the rain falls for 3.5 days. Throughout October, 0.2" (5mm) of precipitation is accumulated. Throughout the year, in San Clemente, there are 51.1 rainfall days, and 3.66" (93mm) of precipitation is accumulated.

Ocean temperature

In San Clemente, in October, the average water temperature is 64.9°F (18.3°C).
Note: Swimming in 64.9°F (18.3°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

Daylight

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

Sunshine

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

UV index

The average daily maximum UV index in San Clemente is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 5 in October transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in October in San Clemente?

In San Clemente, California, in October, the average high-temperature is 73.2°F (22.9°C), and the average low-temperature is 60.4°F (15.8°C).

What is the average humidity in October in San Clemente?

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

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

In San Clemente, in October, it is raining for 3.5 days, with typically 0.2" (5mm) of accumulated precipitation.

What is the ocean temperature in October in San Clemente?

In October, the average ocean temperature in San Clemente is 64.9°F (18.3°C). For most, swimming in 64.9°F (18.3°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

How many hours of daylight does San Clemente have in October?

In San Clemente, California, the average length of the day in October is 11.3h.

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

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

How high is the UV index in October in San Clemente?

In San Clemente, California, the average daily maximum UV index in October is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from unprotected exposure to the UV radiation.
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).

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%).

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 lowest rainfall) is June (0.08").

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 lowest number of rainy days is June (1.4 days).

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).
Coldest months (with the lowest average sea temperature) are January and February (58.9°F).

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 shortest days is December (Average daylight: 10h).

  • Average sunshine in October: 8.3h

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

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).