September weather forecast and climate
Montara, CA

Weather in September

The first month of the autumn, September, is still a comfortable month in Montara, California, with average temperature varying between 56.8°F (13.8°C) and 67.5°F (19.7°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

The average relative humidity in Montara, California, is 77%.

Rainfall

June, July and September are months with the least rain when the rain falls for 3.6 days and typically aggregates up to 0.12" (3mm) of rain.

Ocean temperature

September is the month with the warmest seawater in Montara, with an average ocean temperature of 56.8°F (13.8°C).
Note: At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

Daylight

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

Sunshine

The average sunshine in September is 10.5h.

UV index

Months with the highest UV index are June, August and September, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions - Protection against sun damage is advised. 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.
[Resources]

FAQ

What is the warmest month in Montara?

September is the warmest month, 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 Montara?

In Montara, California, in September, 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 Montara?

In Montara, the average relative humidity in September is 77%.

How many days does it rain in September in Montara?

In September, in Montara, the rain falls for 3.6 days. Throughout September, 0.12" (3mm) of precipitation is accumulated.

What is the driest month in Montara?

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

When is the ocean warmest in Montara?

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

What is the ocean temperature in September in Montara?

In Montara, the average seawater temperature in September is 56.8°F (13.8°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

What is the average length of the day in September in Montara?

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

How many hours of sunshine does Montara have in September?

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

When is the highest UV index in Montara?

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

What is the UV index reading in September in Montara?

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

Average temperature in September
Montara, CA

Average temperature in September - Montara, 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
Montara, CA

Average pressure in September - Montara, 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
Montara, CA

Average wind speed in September - Montara, 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
Montara, CA

Average humidity in September - Montara, 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
Montara, CA

Average rainfall in September - Montara, 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
Montara, CA

Average rainfall days in September - Montara, 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
Montara, CA

Average sea temperature in September - Montara, 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
Montara, CA

Average daylight in September / Average sunshine in September - Montara, 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
Montara, CA

Average sunshine days in September - Montara, 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
Montara, CA

Average UV index in September - Montara, 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
Montara, CA

Average cloud cover in September - Montara, 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
Montara, CA

Average visibility in September - Montara, 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]