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United States weather

Weather in Long Beach, California for September 2026

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

    Temperatures

  • So far, September 2026 in Long Beach is slightly warmer than the historical average by 2 °F.

  • The forecast for the next days in Long Beach predicts temperatures to be around 25 °F, close to the historical average.

  • In general, the average temperature in Long Beach at the beginning of September is 29.7 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 26.7 °F by the end of September.

    • Rain 🌧️

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

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
29
Dry days
Average rainy days
1
Rainy days
Average snowy days
0
Snow days
Average temperatures
25°/18°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
70 %
Avg humidity

Long Beach Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Cloudy
29°
2
Cloudy
29°
3
Sunny
30°
4
Sunny
28°
5
Sunny
30°
6
Overcast
30°
7
Mist
32°
8
Sunny
34°
9
Partly cloudy
32°
10
Sunny
28°
11
Cloudy
27°
12
Mist
26°
13
Overcast
25°
14
Overcast
25°
15
Overcast
25°
16
Patchy rain possible
25°
17
Mist
24°
18
Overcast
25°
19
Overcast
24°
20
Overcast
24°
21
Sunny
22°
22
Sunny
23°
23
Sunny
25°
24
Sunny
25°
25
Sunny
26°
26
Sunny
27°
27
Overcast
27°
28
Overcast
27°
29
Overcast
27°
30
Overcast
28°

Temperatures trend during September in Long Beach

See the weather trend as well as the moving average line

September weather in Long Beach day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Cloudy
Cloudy
 29° /18° 0 mm 8
Sept. 2 Cloudy
Cloudy
 29° /19° 0 mm 8
Sept. 3 Sunny
Sunny
 30° /20° 0 mm 8
Sept. 4 Sunny
Sunny
 28° /19° 0 mm 7
Sept. 5 Sunny
Sunny
 30° /18° 0 mm 8
Sept. 6 Overcast
Overcast
 30° /20° 1.4 mm 6
Sept. 7 Mist
Mist
 32° /19° 0.1 mm 6
Sept. 8 Sunny
Sunny
 34° /20° 0 mm 8
Sept. 9 Partly cloudy
Partly cloudy
 32° /22° 0 mm 7
Sept. 10 Sunny
Sunny
 28° /20° 0 mm 7
Sept. 11 Cloudy
Cloudy
 27° /19° 0 mm 7
Sept. 12 Mist
Mist
 26° /18° 0 mm 7
Sept. 13 Overcast
Overcast
 25° /18° 0 mm 6
Sept. 14 Overcast
Overcast
 25° /18° 0 mm 7
Sept. 15 Overcast
Overcast
 25° /18° 0 mm 6
Sept. 16 Patchy rain possible
Patchy rain possible
 25° /18° 0.1 mm 6
Sept. 17 Mist
Mist
 24° /18° 0.5 mm 6
Sept. 18 Overcast
Overcast
 25° /18° 4.2 mm 6
Sept. 19 Overcast
Overcast
 24° /18° 0 mm 6
Sept. 20 Overcast
Overcast
 24° /17° 0 mm 4
Sept. 21 Sunny
Sunny
 22° /20° 0 mm 6.9
Sept. 22 Sunny
Sunny
 23° /20° 0 mm 7.4
Sept. 23 Sunny
Sunny
 25° /21° 0 mm 7.3
Sept. 24 Sunny
Sunny
 25° /21° 0 mm 7.4
Sept. 25 Sunny
Sunny
 26° /22° 0 mm 7
Sept. 26 Sunny
Sunny
 27° /23° 0 mm 7
Sept. 27 Overcast
Overcast
 27° /22° 0 mm 7
Sept. 28 Overcast
Overcast
 27° /23° 0 mm 7
Sept. 29 Overcast
Overcast
 27° /24° 0 mm 6
Sept. 30 Overcast
Overcast
 28° /23° 0.1 mm 6
Next
Important Notice
Our weather forecast for Long 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 Long Beach forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Long Beach in September - FAQ

What are the expected maximum and minimum temperatures in Long Beach during September?
During September, expect a variety of temperatures with highs around 25° and lows near 18°, suitable for diverse activities and preferences.

How much rainfall should be expected in Long Beach during September?
Rainfall in Long 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 Long Beach during September?
The average wind speed in Long Beach during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Long Beach

Explore the daily rainfall trends and prepare for Long Beachs September weather 💧
Typically, Long Beach has 1 rainy days in September with a total of 6.3 mm of rainfall.

UV exposure in Long Beach during September

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

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Get accurate weather forecasts for Long Beach, located at latitude 33.767 and longitude -118.189. Stay updated with localized weather information tailored for Long Beach.

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