September weather forecast and climate
Bayo Vista, CA

Weather in September

September, the first month of the autumn, in Bayo Vista, is still a warm month, with average temperature ranging between min 56.3°F (13.5°C) and max 80.1°F (26.7°C).

Temperature

July and September, with an average high-temperature of 80.1°F (26.7°C), are the warmest months.

Humidity

September and October, with an average relative humidity of 60%, are the least humid months.

Rainfall

In Bayo Vista, during September, the rain falls for 2.1 days and regularly aggregates up to 0.08" (2mm) of precipitation. In Bayo Vista, during the entire year, the rain falls for 56.9 days and collects up to 4.88" (124mm) of precipitation.

Ocean temperature

With an average ocean temperature of 57°F (13.9°C), September is the month with the warmest seawater.
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 September, the average length of the day is 12.4h.

Sunshine

In Bayo Vista, the average sunshine is 11.1h.

UV index

In Bayo Vista, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to the UV radiation for average 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. 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 Bayo Vista?

July and September, with an average high-temperature of 80.1°F (26.7°C), are warmest months in Bayo Vista, California.

What is the temperature in September in Bayo Vista?

The average high-temperature, in September, is 80.1°F (26.7°C), while the average low-temperature is 56.3°F (13.5°C).

What are the least humid months in Bayo Vista?

September and October, with an average relative humidity of 60%, are the least humid months.

What is the average humidity in September in Bayo Vista?

In September, the average relative humidity in Bayo Vista is 60%.

How much does it rain in Bayo Vista in September?

In September, the rain falls for 2.1 days. Throughout September, 0.08" (2mm) of precipitation is accumulated.

When is the ocean warmest in Bayo Vista?

With an average ocean temperature of 57°F (13.9°C), September is the month with the warmest seawater in Bayo Vista, California.

How cold is the water in September in Bayo Vista?

In September, the average ocean temperature in Bayo Vista, California, is 57°F (13.9°C). Swimming in 57°F (13.9°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

What is the average length of the day in September in Bayo Vista?

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

How long on average sun shines in September in Bayo Vista?

In Bayo Vista, the average sunshine in September is 11.1h.

How high is the UV index in September in Bayo Vista?

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

Average temperature in September
Bayo Vista, CA

Average temperature in September - Bayo Vista, CA
  • Average high temperature in September: 80.1°F

The warmest months (with the highest average high temperature) are July and September (80.1°F).
The month with the lowest average high temperature is December (55.4°F).

  • Average low temperature in September: 56.3°F

The month with the highest average low temperature is August (56.5°F).
The coldest month (with the lowest average low temperature) is January (43°F).

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Average pressure in September
Bayo Vista, CA

Average pressure in September - Bayo Vista, CA
  • Average pressure in September: 29.92"

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is June (29.91").

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Average wind speed in September
Bayo Vista, CA

Average wind speed in September - Bayo Vista, CA
  • Average wind speed in September: 5.5mph

The windiest month (with the highest average wind speed) is May (7.1mph).
The calmest month (with the lowest average wind speed) is November (4.6mph).

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Average humidity in September
Bayo Vista, CA

Average humidity in September - Bayo Vista, CA
  • Average humidity in September: 60%

The month with the highest relative humidity is March (75%).
Months with the lowest relative humidity are September and October (60%).

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Average rainfall in September
Bayo Vista, CA

Average rainfall in September - Bayo Vista, CA
  • Average rainfall in September: 0.08"

The wettest month (with the highest rainfall) is February (1.14").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days in September
Bayo Vista, CA

Average rainfall days in September - Bayo Vista, CA
  • Average rainfall days in September: 2.1 days

The month with the highest number of rainy days is March (10.2 days).
The month with the least rainy days is August (0.9 days).

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Average sea temperature in September
Bayo Vista, CA

Average sea temperature in September - Bayo Vista, CA
  • Average sea temperature in September: 57°F

The best month for swimming (with the highest average sea temperature) is September (57°F).
The coldest month (with the lowest average sea temperature) is April (52.6°F).

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Average daylight in September /
Average sunshine in September
Bayo Vista, CA

Average daylight in September / Average sunshine in September - Bayo Vista, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.8h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in September: 11.1h

The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 5.7h).

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Average sunshine days in September
Bayo Vista, CA

Average sunshine days in September - Bayo Vista, CA
  • Average sunshine days in September: 26 days

The month with the most sunshine days is July (27.2 days).
The month with the least sunshine days is March (18.8 days).

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Average UV index in September
Bayo Vista, CA

Average UV index in September - Bayo Vista, CA
  • Average UV index in September: 5

The month with the highest UV index is June (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in September
Bayo Vista, CA

Average cloud cover in September - Bayo Vista, CA
  • Average cloud cover in September: 11

The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 9).

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Average visibility in September
Bayo Vista, CA

Average visibility in September - Bayo Vista, 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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