October weather forecast and climate
Chula Vista, CA

Wood and rope barriers at sunset on the waterfront of Bayside Park in Chula Vista, San Diego Bay, California
Wood and rope barriers at sunset on the waterfront of Bayside Park in Chula Vista, San Diego Bay, California

Weather in October

October, like September, in Chula Vista, California, is another warm autumn month, with average temperature fluctuating between 61.5°F (16.4°C) and 74.5°F (23.6°C).

Temperature

In October, the average high-temperature is relatively the same as in September - a still warm 74.5°F (23.6°C). In October, in Chula Vista, the average low-temperature is 61.5°F (16.4°C).

Humidity

In October, the average relative humidity in Chula Vista, California, is 63%.

Rainfall

In October, the rain falls for 2.6 days. Throughout October, 0.12" (3mm) of precipitation is accumulated. In Chula Vista, California, during the entire year, the rain falls for 51 days and collects up to 5.63" (143mm) of precipitation.

Ocean temperature

In Chula Vista, California, the average water temperature is 65.1°F (18.4°C).
Note: For most, swimming in 65.1°F (18.4°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

Daylight

In October, the average length of the day in Chula Vista is 11.3h.

Sunshine

In October, the average sunshine is 8.8h.

UV index

In October, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to the UV radiation for the average person.
Note: In October, 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 temperature in October in Chula Vista?

In October, in Chula Vista, California, the average high-temperature is 74.5°F (23.6°C), and the average low-temperature is 61.5°F (16.4°C).

What is the average humidity in October in Chula Vista?

In October, the average relative humidity in Chula Vista, California, is 63%.

How many days does it rain in October in Chula Vista?

In Chula Vista, California, in October, during 2.6 rainfall days, 0.12" (3mm) of precipitation is typically accumulated.

How cold is the water in October in Chula Vista?

In October, the average ocean temperature in Chula Vista, California, is 65.1°F (18.4°C). For most, swimming in 65.1°F (18.4°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

How many hours of daylight does Chula Vista have in October?

The average length of the day in October in Chula Vista is 11.3h.

How many hours of sunshine does Chula Vista have in October?

In October, the average sunshine in Chula Vista, California, is 8.8h.

What is the UV index intensity in October in Chula Vista?

In Chula Vista, California, the average daily maximum UV index in October is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in October
Chula Vista, CA

Average temperature in October - Chula Vista, CA
  • Average high temperature in October: 74.5°F

The warmest month (with the highest average high temperature) is August (79.2°F).
The month with the lowest average high temperature is December (63.7°F).

  • Average low temperature in October: 61.5°F

The month with the highest average low temperature is August (66.7°F).
The coldest month (with the lowest average low temperature) is February (51.1°F).

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Average pressure in October
Chula Vista, CA

Average pressure in October - Chula Vista, CA
  • Average pressure in October: 29.93"

The month with the highest atmospheric pressure is January (30.09").
Months with the lowest atmospheric pressure are June and September (29.88").

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Average wind speed in October
Chula Vista, CA

Average wind speed in October - Chula Vista, CA
  • Average wind speed in October: 5mph

The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is October (5mph).

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Average humidity in October
Chula Vista, CA

Average humidity in October - Chula Vista, CA
  • Average humidity in October: 63%

The month with the highest relative humidity is June (71%).
The month with the lowest relative humidity is November (58%).

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Average rainfall in October
Chula Vista, CA

Average rainfall in October - Chula Vista, CA
  • Average rainfall in October: 0.12"

The wettest month (with the highest rainfall) is February (1.1").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in October
Chula Vista, CA

Average rainfall days in October - Chula Vista, CA
  • Average rainfall days in October: 2.6 days

The month with the highest number of rainy days is March (7.2 days).
The month with the least rainy days is June (1.7 days).

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Average sea temperature in October
Chula Vista, CA

Average sea temperature in October - Chula Vista, CA
  • Average sea temperature in October: 65.1°F

The best month for swimming (with the highest average sea temperature) is August (67.9°F).
The coldest month (with the lowest average sea temperature) is February (58.7°F).

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Average daylight in October /
Average sunshine in October
Chula Vista, CA

Average daylight in October / Average sunshine in October - Chula Vista, CA
  • Average daylight in October: 11.3h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in October: 8.8h

The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 6.7h).

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Average sunshine days in October
Chula Vista, CA

Average sunshine days in October - Chula Vista, CA
  • Average sunshine days in October: 26.7 days

The month with the most sunshine days is June (27.2 days).
The month with the least sunshine days is February (21.1 days).

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Average UV index in October
Chula Vista, CA

Average UV index in October - Chula Vista, CA
  • Average UV index in October: 5

Months with the highest UV index are June, July, August and September (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 4).

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Average cloud cover in October
Chula Vista, CA

Average cloud cover in October - Chula Vista, CA
  • Average cloud cover in October: 14

Months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 8).

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Average visibility in October
Chula Vista, CA

Average visibility in October - Chula Vista, CA
  • Average visibility in October: 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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