September weather forecast and climate
El Granada, CA

Weather in September

September, the first month of the autumn, in El Granada, is also an enjoyable month, with average temperature fluctuating between 66.9°F (19.4°C) and 56.7°F (13.7°C).

Temperature

With an average high-temperature of 66.9°F (19.4°C) and an average low-temperature of 56.7°F (13.7°C), September is the warmest month.

Humidity

The average relative humidity in September is 77%.

Rainfall

In El Granada, during 3.6 rainfall days, 0.16" (4mm) of precipitation is typically accumulated. Throughout the year, in El Granada, there are 76.8 rainfall days, and 8.54" (217mm) of precipitation is accumulated.

Ocean temperature

With an average ocean temperature of 57.4°F (14.1°C), September is the month with the warmest seawater in El Granada.
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

The average length of the day in El Granada is 12.4h.

Sunshine

In El Granada, the average sunshine is 10.7h.

UV index

June, August and September, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV rays for the ordinary person.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
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.
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FAQ

What is the warmest month in El Granada?

With an average high-temperature of 66.9°F (19.4°C) and an average low-temperature of 56.7°F (13.7°C), September is the warmest month.

What is the temperature in September in El Granada?

The average high-temperature, in September, in El Granada, California, is 66.9°F (19.4°C), while the average low-temperature is 56.7°F (13.7°C).

What is the average humidity in September in El Granada?

The average relative humidity in September is 77%.

How many days does it rain in September in El Granada?

In September, the rain falls for 3.6 days. Throughout September, 0.16" (4mm) of precipitation is accumulated.

What month is the ocean warmest in El Granada?

The month with the warmest seawater in El Granada is September, with an average ocean temperature of 57.4°F (14.1°C).

How cold is the water in September in El Granada?

In El Granada, California, in September, the average water temperature is 57.4°F (14.1°C). Swimming in 57.4°F (14.1°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does El Granada have in September?

In September, the average length of the day in El Granada, California, is 12.4h.

How long on average sun shines in September in El Granada?

In El Granada, California, the average sunshine in September is 10.7h.

When is the highest UV index in El Granada?

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

What is the UV index intensity in September in El Granada?

In September, the average daily maximum UV index in El Granada is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from unsafe exposure to the Sun's UV rays.

Average temperature in September
El Granada, CA

Average temperature in September - El Granada, CA
  • Average high temperature in September: 66.9°F

The warmest month (with the highest average high temperature) is September (66.9°F).
The month with the lowest average high temperature is December (55.6°F).

  • Average low temperature in September: 56.7°F

The month with the highest average low temperature is September (56.7°F).
The coldest month (with the lowest average low temperature) is February (48.7°F).

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Average pressure in September
El Granada, CA

Average pressure in September - El Granada, 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").

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Average wind speed in September
El Granada, CA

Average wind speed in September - El Granada, CA
  • Average wind speed in September: 7mph

The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

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Average humidity in September
El Granada, CA

Average humidity in September - El Granada, 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%).

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Average rainfall in September
El Granada, CA

Average rainfall in September - El Granada, CA
  • Average rainfall in September: 0.16"

The wettest month (with the highest rainfall) is February (1.61").
The driest months (with the least rainfall) are June and July (0.12").

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Average rainfall days in September
El Granada, CA

Average rainfall days in September - El Granada, CA
  • Average rainfall days in September: 3.6 days

The month with the highest number of rainy days is March (10.8 days).
The month with the least rainy days is June (3 days).

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Average sea temperature in September
El Granada, CA

Average sea temperature in September - El Granada, CA
  • Average sea temperature in September: 57.3°F

The best month for swimming (with the highest average sea temperature) is September (57.3°F).
The coldest months (with the lowest average sea temperature) are April and June (53°F).

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Average daylight in September /
Average sunshine in September
El Granada, CA

Average daylight in September / Average sunshine in September - El Granada, 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: 10.7h

The month with the most sunshine is July (Average sunshine: 11.4h).
The month with the least sunshine is December (Average sunshine: 5.7h).

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Average sunshine days in September
El Granada, CA

Average sunshine days in September - El Granada, CA
  • Average sunshine days in September: 22.6 days

The month with the most sunshine days is October (24.6 days).
Months with the least sunshine days are March and August (18.8 days).

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Average UV index in September
El Granada, CA

Average UV index in September - El Granada, 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 January, February, March, April, May, July, October, November and December (UV index 4).

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Average cloud cover in September
El Granada, CA

Average cloud cover in September - El Granada, CA
  • Average cloud cover in September: 18

The month with the most cloud cover is March (Cloud cover 38).
The month with the least cloud cover is September (Cloud cover 18).

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Average visibility in September
El Granada, CA

Average visibility in September - El Granada, 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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