October weather forecast
Chula Vista, CA

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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's weather symbolizes the heart of autumn in Chula Vista. As temperatures further fall, the average sea temperature refines to a comfortable 65.1°F (18.4°C). The mild climate receives an uptick in sunshine days to 26.7. A vivid palette of falling leaves and crunching footsteps around the town adds to the city’s charm. October's transformed hue welcomes everyone into a season steeped in crisp air and rich colors.

Temperature

The transition into October in Chula Vista shows a subtle variation to a still warm 74.5°F (23.6°C) from September's 78.3°F (25.7°C) in the average high-temperature. Chula Vista records an average nighttime low-temperature of 61.5°F (16.4°C) throughout October.

Humidity

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

Rainfall

In Chula Vista, California, in October, during 2.6 rainfall days, 0.12" (3mm) of precipitation is typically 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, in October, the average water temperature is 65.1°F (18.4°C).
Note: In 65.1°F (18.4°C), swimming is not an enjoyable activity for most. The challenge of managing one's breathing increases as the temperature goes under 69.8°F (21°C).

Daylight

In October, the average length of the day is 11h and 22min.
On the first day of the month, sunrise is at 6:42 am and sunset at 6:32 pm. On the last day of October, in Chula Vista, sunrise is at 7:05 am and sunset at 5:58 pm PDT.

Sunshine

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

UV index

The average daily maximum UV index in October in Chula Vista, California, is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: In October, the maximum UV index of 5 transforms into these recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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Frequently asked questions

What is the usual temperature for Chula Vista in October?

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

What is the average humidity in October in Chula Vista?

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

How much does it rain in Chula Vista in October?

In October, the rain falls for 2.6 days. Throughout October, 0.12" (3mm) of precipitation is accumulated.

What is the ocean temperature in October in Chula Vista?

In October, the average ocean temperature in Chula Vista is 65.1°F (18.4°C). Swimming in 65.1°F (18.4°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

What is the average length of the day in October in Chula Vista?

In October, the average day length in Chula Vista is 11h and 22min.

When are sunrise and sunset in October in Chula Vista?

On the first day of October in Chula Vista, California, sunrise is at 6:42 am and sunset at 6:32 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 5:58 pm PDT.

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

In October, the average sunshine duration is 8.8h.

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

The average daily maximum UV index in October in Chula Vista is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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"Hg

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

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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: 11h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in October: 8h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

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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

The months with the highest UV index are June, July, August and September (UV index 6).
The 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

The 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

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Chula Vista, California, USA

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