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Weather in Newport Beach, California for September 2026

Your guide to Newport Beach weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Newport Beach at the beginning of September is 24.7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.1 °F by the end of September.

    • Rain 🌧️

  • Precipitation in Newport Beach during September is a rare event, with an average of fewer than 2 rainy days.

    • More

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Average dry days
29
Dry days
Average rainy days
1
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/18°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
84 %
Avg humidity

Newport Beach Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Cloudy
25°
2
Overcast
26°
3
Cloudy
29°
4
Mist
24°
5
Cloudy
24°
6
Mist
22°
7
Partly cloudy
23°
8
Cloudy
23°
9
Mist
20°
10
Mist
20°
11
Mist
20°
12
Overcast
20°
13
Overcast
21°
14
Mist
22°
15
Mist
23°
16
Partly cloudy
25°
17
Overcast
23°
18
Heavy rain at times
25°
19
Mist
23°
20
Mist
22°
21
Mist
21°
22
Mist
23°
23
Partly cloudy
24°
24
Mist
22°
25
Mist
21°
26
Overcast
19°
27
Overcast
20°
28
Overcast
20°
29
Mist
20°
30
Mist
19°

Temperatures trend during September in Newport Beach

See the weather trend as well as the moving average line

September weather in Newport Beach day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Cloudy
Cloudy
 25° /18° 0 mm 6
Sept. 2 Overcast
Overcast
 26° /21° 0 mm 6
Sept. 3 Cloudy
Cloudy
 29° /22° 0 mm 6
Sept. 4 Mist
Mist
 24° /20° 0 mm 5
Sept. 5 Cloudy
Cloudy
 24° /18° 0 mm 5
Sept. 6 Mist
Mist
 22° /17° 0 mm 5
Sept. 7 Partly cloudy
Partly cloudy
 23° /17° 0 mm 6
Sept. 8 Cloudy
Cloudy
 23° /18° 0 mm 5
Sept. 9 Mist
Mist
 20° /17° 0 mm 5
Sept. 10 Mist
Mist
 20° /17° 0 mm 5
Sept. 11 Mist
Mist
 20° /17° 0 mm 5
Sept. 12 Overcast
Overcast
 20° /17° 0 mm 5
Sept. 13 Overcast
Overcast
 21° /17° 0 mm 5
Sept. 14 Mist
Mist
 22° /18° 0 mm 5
Sept. 15 Mist
Mist
 23° /18° 0 mm 5
Sept. 16 Partly cloudy
Partly cloudy
 25° /19° 0 mm 7
Sept. 17 Overcast
Overcast
 23° /19° 0 mm 5
Sept. 18 Heavy rain at times
Heavy rain at times
 25° /21° 8.5 mm 6
Sept. 19 Mist
Mist
 23° /19° 0 mm 5
Sept. 20 Mist
Mist
 22° /18° 0 mm 5
Sept. 21 Mist
Mist
 21° /17° 0 mm 5
Sept. 22 Mist
Mist
 23° /17° 0 mm 5
Sept. 23 Partly cloudy
Partly cloudy
 24° /19° 0 mm 6
Sept. 24 Mist
Mist
 22° /18° 0 mm 5
Sept. 25 Mist
Mist
 21° /17° 0 mm 5
Sept. 26 Overcast
Overcast
 19° /18° 0 mm 4
Sept. 27 Overcast
Overcast
 20° /17° 0 mm 5
Sept. 28 Overcast
Overcast
 20° /17° 0 mm 5
Sept. 29 Mist
Mist
 20° /17° 0 mm 5
Sept. 30 Mist
Mist
 19° /17° 0 mm 4
Next
Important Notice
Our weather forecast for Newport Beach in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Newport Beach forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Newport Beach in September - FAQ

What are the expected maximum and minimum temperatures in Newport Beach during September?
During September, expect a variety of temperatures with highs around 22° and lows near 18°, suitable for diverse activities and preferences.
How much rainfall should be expected in Newport Beach during September?
Rainfall in Newport Beach during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 1 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Newport Beach during September?
The average wind speed in Newport Beach during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Newport Beach

Explore the daily rainfall trends and prepare for Newport Beachs September weather 💧
Typically, Newport Beach has 1 rainy days in September with a total of 8.5 mm of rainfall.

UV exposure in Newport Beach during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Newport Beach?

Get accurate weather forecasts for Newport Beach, located at latitude 33.619 and longitude -117.929. Stay updated with localized weather information tailored for Newport Beach.

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