September weather forecast and climate
Moss Beach, CA

Weather in September

The first month of the autumn, September, is also an enjoyable month in Moss Beach, California, with average temperature ranging between max 67.5°F (19.7°C) and min 56.8°F (13.8°C).

Temperature

With an average high-temperature of 67.5°F (19.7°C) and an average low-temperature of 56.8°F (13.8°C), September is the warmest month.

Humidity

In Moss Beach, the average relative humidity is 77%.

Rainfall

Months with the least rainfall are June, July and September Rain falls for 3.6 days and accumulates 0.12" (3mm) of rain.

Ocean temperature

The month with the warmest seawater in Moss Beach is September, with an average ocean temperature of 56.8°F (13.8°C).
Note: Swimming in 56.8°F (13.8°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.

Daylight

In September, the average length of the day is 12.4h.

Sunshine

The average sunshine in September is 10.5h.

UV index

June, August and September, with an average maximum UV index of 5, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. 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.
[Resources]

FAQ

What is the warmest month in Moss Beach?

September is the warmest month in Moss Beach, California, with an average high-temperature of 67.5°F (19.7°C) and an average low-temperature of 56.8°F (13.8°C).

What is the temperature in September in Moss Beach?

In September, in Moss Beach, the average high-temperature is 67.5°F (19.7°C), and the average low-temperature is 56.8°F (13.8°C).

What is the average humidity in September in Moss Beach?

In Moss Beach, California, the average relative humidity in September is 77%.

How much does it rain in Moss Beach in September?

In Moss Beach, California, in September, it is raining for 3.6 days, with typically 0.12" (3mm) of accumulated precipitation.

What is the driest month in Moss Beach?

Months with the least rainfall in Moss Beach, California, are June, July and September Rain falls for 3.6 days and accumulates 0.12" (3mm) of rain.

What is the month with the warmest ocean in Moss Beach?

With an average ocean temperature of 56.8°F (13.8°C), September is the month with the warmest seawater in Moss Beach, California.

What is the water temperature in September in Moss Beach?

In September, the average ocean temperature in Moss Beach, California, is 56.8°F (13.8°C). Swimming in 56.8°F (13.8°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 September in Moss Beach?

In Moss Beach, California, the average length of the day in September is 12.4h.

How long on average sun shines in September in Moss Beach?

In September, the average sunshine in Moss Beach, California, is 10.5h.

What is the month with the highest UV index in Moss Beach?

June, August and September, with an average maximum UV index of 5, are months with the highest UV index in Moss Beach.

What is the UV index intensity in September in Moss Beach?

In September, the average daily maximum UV index in Moss Beach, California, is 5. A UV Index of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV radiation.

Average temperature in September
Moss Beach, CA

Average temperature in September - Moss Beach, CA
  • Average high temperature in September: 67.5°F

The warmest month (with the highest average high temperature) is September (67.5°F).
The month with the lowest average high temperature is December (55.6°F).

  • Average low temperature in September: 56.8°F

The month with the highest average low temperature is September (56.8°F).
The coldest months (with the lowest average low temperature) are January and February (48.7°F).

[Resources]

Average pressure in September
Moss Beach, CA

Average pressure in September - Moss Beach, CA
  • Average pressure in September: 29.92"

The month with the highest atmospheric pressure is January (30.13").
The month with the lowest atmospheric pressure is September (29.92").

[Resources]

Average wind speed in September
Moss Beach, CA

Average wind speed in September - Moss Beach, CA
  • Average wind speed in September: 6.8mph

The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest months (with the lowest average wind speed) are August and September (6.8mph).

[Resources]

Average humidity in September
Moss Beach, CA

Average humidity in September - Moss Beach, CA
  • Average humidity in September: 77%

The month with the highest relative humidity is August (82%).
Months with the lowest relative humidity are November and December (72%).

[Resources]

Average rainfall in September
Moss Beach, CA

Average rainfall in September - Moss Beach, CA
  • Average rainfall in September: 0.12"

The wettest month (with the highest rainfall) is February (1.34").
The driest months (with the least rainfall) are June, July and September (0.12").

[Resources]

Average rainfall days in September
Moss Beach, CA

Average rainfall days in September - Moss Beach, CA
  • Average rainfall days in September: 3.6 days

The month with the highest number of rainy days is March (10.5 days).
The month with the least rainy days is September (3.6 days).

[Resources]

Average sea temperature in September
Moss Beach, CA

Average sea temperature in September - Moss Beach, CA
  • Average sea temperature in September: 56.9°F

The best month for swimming (with the highest average sea temperature) is September (56.9°F).
The coldest month (with the lowest average sea temperature) is June (52.4°F).

[Resources]

Average daylight in September /
Average sunshine in September
Moss Beach, CA

Average daylight in September / Average sunshine in September - Moss Beach, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in September: 10.5h

The month with the most sunshine is July (Average sunshine: 11.1h).
The month with the least sunshine is December (Average sunshine: 5.7h).

[Resources]

Average sunshine days in September
Moss Beach, CA

Average sunshine days in September - Moss Beach, CA
  • Average sunshine days in September: 22.6 days

The month with the most sunshine days is October (24.5 days).
The month with the least sunshine days is August (18.7 days).

[Resources]

Average UV index in September
Moss Beach, CA

Average UV index in September - Moss Beach, CA
  • Average UV index in September: 5

Months with the highest UV index are June, August and September (UV index 5).
Months with the lowest UV index are February and December (UV index 3).

[Resources]

Average cloud cover in September
Moss Beach, CA

Average cloud cover in September - Moss Beach, CA
  • Average cloud cover in September: 21

The month with the most cloud cover is March (Cloud cover 39).
Months with the least cloud cover are September and October (Cloud cover 21).

[Resources]

Average visibility in September
Moss Beach, CA

Average visibility in September - Moss Beach, 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).

[Resources]