September weather forecast and climate
Marina del Rey, CA

Weather in September

The first month of the autumn, September, is also a moderately hot month in Marina del Rey, California, with average temperature fluctuating between 63.7°F (17.6°C) and 80.2°F (26.8°C).

Temperature

In September, the average high-temperature is essentially the same as in August - a still moderately hot 80.2°F (26.8°C). The average low-temperature, in September, is 63.7°F (17.6°C).

Humidity

In September, the average relative humidity in Marina del Rey, California, is 61%.

Rainfall

In September, in Marina del Rey, California, the rain falls for 2.5 days. Throughout September, 0.16" (4mm) of precipitation is accumulated. In Marina del Rey, during the entire year, the rain falls for 48.8 days and collects up to 7.52" (191mm) of precipitation.

Ocean temperature

In Marina del Rey, in September, the average water temperature is 66.7°F (19.3°C).
Note: For swimming, a surface water temperature of 66.7°F (19.3°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 Marina del Rey is 12.4h.

Sunshine

In Marina del Rey, the average sunshine is 10.5h.

UV index

June through September, with an average maximum UV index of 6, are months with the highest UV index in Marina del Rey. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to the UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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 September in Marina del Rey?

In September, the average high-temperature is 80.2°F (26.8°C), and the average low-temperature is 63.7°F (17.6°C).

What is the average humidity in September in Marina del Rey?

In September, the average relative humidity in Marina del Rey is 61%.

How many days does it rain in September in Marina del Rey?

In Marina del Rey, in September, during 2.5 rainfall days, 0.16" (4mm) of precipitation is typically accumulated.

How cold is the water in September in Marina del Rey?

In Marina del Rey, California, in September, the average water temperature is 66.7°F (19.3°C). For swimming, a surface water temperature of 66.7°F (19.3°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).

How many hours of daylight does Marina del Rey have in September?

In September, the average length of the day in Marina del Rey is 12.4h.

How many hours of sunshine does Marina del Rey have in September?

The average sunshine in September in Marina del Rey is 10.5h.

What is the month with the highest UV index in Marina del Rey?

June through September, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index reading in September in Marina del Rey?

The average daily maximum UV index in September in Marina del Rey, California, is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV rays.

Average temperature in September
Marina del Rey, CA

Average temperature in September - Marina del Rey, CA
  • Average high temperature in September: 80.2°F

The warmest month (with the highest average high temperature) is August (80.8°F).
The month with the lowest average high temperature is December (63.9°F).

  • Average low temperature in September: 63.7°F

The month with the highest average low temperature is August (64.4°F).
The coldest month (with the lowest average low temperature) is February (50.5°F).

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Average pressure in September
Marina del Rey, CA

Average pressure in September - Marina del Rey, CA
  • Average pressure in September: 29.9"

The month with the highest atmospheric pressure is January (30.1").
Months with the lowest atmospheric pressure are June and September (29.9").

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Average wind speed in September
Marina del Rey, CA

Average wind speed in September - Marina del Rey, CA
  • Average wind speed in September: 4.8mph

The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest months (with the lowest average wind speed) are August and September (4.8mph).

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Average humidity in September
Marina del Rey, CA

Average humidity in September - Marina del Rey, CA
  • Average humidity in September: 61%

The month with the highest relative humidity is June (69%).
The month with the lowest relative humidity is November (52%).

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Average rainfall in September
Marina del Rey, CA

Average rainfall in September - Marina del Rey, CA
  • Average rainfall in September: 0.16"

The wettest month (with the highest rainfall) is January (1.54").
The driest months (with the least rainfall) are June and August (0.08").

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Average rainfall days in September
Marina del Rey, CA

Average rainfall days in September - Marina del Rey, CA
  • Average rainfall days in September: 2.5 days

The month with the highest number of rainy days is March (6.8 days).
The month with the least rainy days is August (1.8 days).

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Average sea temperature in September
Marina del Rey, CA

Average sea temperature in September - Marina del Rey, CA
  • Average sea temperature in September: 66.7°F

The best months for swimming (with the highest average sea temperature) are July and August (67.9°F).
The coldest month (with the lowest average sea temperature) is January (58.3°F).

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Average daylight in September /
Average sunshine in September
Marina del Rey, CA

Average daylight in September / Average sunshine in September - Marina del Rey, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in September: 10.5h

Months with the most sunshine are July and August (Average sunshine: 11.9h).
Months with the least sunshine are February and December (Average sunshine: 6.6).

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Average sunshine days in September
Marina del Rey, CA

Average sunshine days in September - Marina del Rey, CA
  • Average sunshine days in September: 26.3 days

The month with the most sunshine days is August (27.9 days).
The month with the least sunshine days is February (21.8 days).

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Average UV index in September
Marina del Rey, CA

Average UV index in September - Marina del Rey, CA
  • Average UV index in September: 6

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

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Average cloud cover in September
Marina del Rey, CA

Average cloud cover in September - Marina del Rey, CA
  • Average cloud cover in September: 12

Months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 8).

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Average visibility in September
Marina del Rey, CA

Average visibility in September - Marina del Rey, CA
  • Average visibility in September: 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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