September weather forecast and climate
Capitola, CA

The beach and a long wooden pier on the calm blue waters in Capitola, California
The beach and a long wooden pier on the calm blue waters in Capitola, California

Weather in September

The first month of the autumn, September, is still a pleasant month in Capitola, California, with average temperature varying between 73°F (22.8°C) and 55.2°F (12.9°C).

Temperature

The warmest months are August and September, with an average high-temperature of 73°F (22.8°C).

Humidity

The average relative humidity in Capitola is 70%.

Rainfall

In Capitola, it is raining for 2.7 days, with typically 0.12" (3mm) of accumulated precipitation. In Capitola, during the entire year, the rain falls for 77.9 days and collects up to 14.45" (367mm) of precipitation.

Ocean temperature

August and September, with an average ocean temperature of 58.1°F (14.5°C), are months with the warmest seawater in Capitola.
Note: Swimming in 58.1°F (14.5°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

The average length of the day in Capitola is 12.4h.

Sunshine

In Capitola, the average sunshine in September is 10.9h.

UV index

Months with the highest UV index are June through September, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 5 in September transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the warmest month in Capitola?

Warmest months are August and September, with an average high-temperature of 73°F (22.8°C).

What is the temperature in September in Capitola?

The average high-temperature, in September, is 73°F (22.8°C), while the average low-temperature is 55.2°F (12.9°C).

What is the average humidity in September in Capitola?

The average relative humidity in September is 70%.

How many days does it rain in September in Capitola?

In Capitola, California, in September, it is raining for 2.7 days, with typically 0.12" (3mm) of accumulated precipitation.

What are the months with the warmest ocean in Capitola?

August and September, with an average ocean temperature of 58.1°F (14.5°C), are months with the warmest seawater in Capitola, California.

How cold is the water in September in Capitola?

In Capitola, California, in September, the average water temperature is 58.1°F (14.5°C). Swimming in 58.1°F (14.5°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 Capitola?

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

How long on average sun shines in September in Capitola?

In Capitola, the average sunshine in September is 10.9h.

What are the months with the highest UV index in Capitola?

June through September, with an average maximum UV index of 5, are months with the highest UV index in Capitola.

What is the UV index intensity in September in Capitola?

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

Average temperature in September
Capitola, CA

Average temperature in September - Capitola, CA
  • Average high temperature in September: 73°F

The warmest months (with the highest average high temperature) are August and September (73°F).
The month with the lowest average high temperature is December (57.2°F).

  • Average low temperature in September: 55.2°F

The month with the highest average low temperature is September (55.2°F).
The coldest month (with the lowest average low temperature) is February (45.5°F).

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Average pressure in September
Capitola, CA

Average pressure in September - Capitola, 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
Capitola, CA

Average wind speed in September - Capitola, CA
  • Average wind speed in September: 5.7mph

The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

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Average humidity in September
Capitola, CA

Average humidity in September - Capitola, CA
  • Average humidity in September: 70%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (68%).

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Average rainfall in September
Capitola, CA

Average rainfall in September - Capitola, CA
  • Average rainfall in September: 0.12"

The wettest month (with the highest rainfall) is December (2.8").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in September
Capitola, CA

Average rainfall days in September - Capitola, CA
  • Average rainfall days in September: 2.7 days

The month with the highest number of rainy days is March (13.4 days).
The month with the least rainy days is August (1.2 days).

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Average sea temperature in September
Capitola, CA

Average sea temperature in September - Capitola, CA
  • Average sea temperature in September: 58.1°F

The best months for swimming (with the highest average sea temperature) are August and September (58.1°F).
The coldest month (with the lowest average sea temperature) is April (53.8°F).

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Average daylight in September /
Average sunshine in September
Capitola, CA

Average daylight in September / Average sunshine in September - Capitola, 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: 9.7h).

  • Average sunshine in September: 10.9h

The month with the most sunshine is July (Average sunshine: 11.7h).
The month with the least sunshine is December (Average sunshine: 5.8h).

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Average sunshine days in September
Capitola, CA

Average sunshine days in September - Capitola, CA
  • Average sunshine days in September: 26.3 days

The month with the most sunshine days is August (27.8 days).
The month with the least sunshine days is March (16.4 days).

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Average UV index in September
Capitola, CA

Average UV index in September - Capitola, CA
  • Average UV index in September: 5

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

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Average cloud cover in September
Capitola, CA

Average cloud cover in September - Capitola, CA
  • Average cloud cover in September: 15

The month with the most cloud cover is March (Cloud cover 38).
Months with the least cloud cover are July and September (Cloud cover 15).

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Average visibility in September
Capitola, CA

Average visibility in September - Capitola, 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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