Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
The onset of October marks an average high-temperature of a pleasant 73°F (22.8°C), hardly differing from September's 76.1°F (24.5°C). Costa Mesa throughout October, experiences an average nighttime temperature of 62.1°F (16.7°C).Humidity
In Costa Mesa, the average relative humidity in October is 65%.Rainfall
In Costa Mesa, California, in October, it is raining for 3.2 days, with typically 0.2" (5mm) of accumulated precipitation. Throughout the year, in Costa Mesa, there are 50.7 rainfall days, and 3.74" (95mm) of precipitation is accumulated.Daylight
In Costa Mesa, the average length of the day in October is 11h and 20min.On the first day of the month, sunrise is at 6:46 am and sunset at 6:35 pm. On the last day of October, in Costa Mesa, California, sunrise is at 7:10 am and sunset at 6:00 pm PDT.
Sunshine
In October, the average sunshine in Costa Mesa is 8.4h.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 exposure to the Sun's UV rays for ordinary individuals.Note: A maximum daily UV index of 5 during October morphs into the following directions:
Make use of precautions - Suggestions to resist sunburn are communicated. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Costa Mesa in October?
What is the average humidity in October in Costa Mesa?
How much does it rain in Costa Mesa in October?
How many hours of daylight does Costa Mesa have in October?
When is the sunrise / sunset in October in Costa Mesa?
How long on average sun shines in October in Costa Mesa?
How high is the UV index in October in Costa Mesa?
Average temperature in October
Costa Mesa, CA
- Average high temperature in October: 73°F
The warmest month (with the highest average high temperature) is August (76.6°F).
The month with the lowest average high temperature is December (62.4°F).
- Average low temperature in October: 62.1°F
The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is February (52.3°F).
Average pressure in October
Costa Mesa, CA
- Average pressure in October: 29.95"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.89"Hg).
Average wind speed in October
Costa Mesa, CA
- Average wind speed in October: 5.2mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is October (5.2mph).
Average humidity in October
Costa Mesa, CA
- Average humidity in October: 65%
The month with the highest relative humidity is June (74%).
The month with the lowest relative humidity is November (59%).
Average rainfall in October
Costa Mesa, CA
- Average rainfall in October: 0.2"
The wettest month (with the highest rainfall) is December (0.79").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in October
Costa Mesa, CA
- Average rainfall days in October: 3.2 days
The month with the highest number of rainy days is March (6.6 days).
The month with the least rainy days is June (1.6 days).
Average daylight in October /
Average sunshine in October
Costa Mesa, CA
- Average daylight in October: 11h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in October: 8h and 2min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in October
Costa Mesa, CA
- Average sunshine days in October: 25.3 days
The month with the most sunshine days is June (26.5 days).
The month with the least sunshine days is February (20.5 days).
Average UV index in October
Costa Mesa, CA
- Average UV index in October: 5
The months with the highest UV index are July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in October
Costa Mesa, CA
- Average cloud cover in October: 15
The months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 8).
Average visibility in October
Costa Mesa, 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).
Costa Mesa, California, USA
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