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Los Angeles in September: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Los Angeles in September will be like? Take a look at our weather guide for Los Angeles, based on historical data.
Check flight prices to Los Angeles on Avionero:
September

Weather in Los Angeles in September 2024

Great Weather
Hot
☀️
Sunny
If you're looking for a destination with great weather in September, look no more – Los Angeles is a perfect choice. Expect average maximum temperatures of +31°C and plenty of sunshine, with around 20 sunny days. Just keep in mind that there may be some rainfall, with approximately 5 mm of precipitation over an average of 0 rainy days. So, pack your sunglasses, a beach towel, and great walking shoes, as it's most likely going to be amazing weather. Search flights in one click on Avionero.

Average weather

☀️
+31°C
Avg. max. temperature
+12°C
Min.
+44°C
Max.
5 mm
Total precipitation
64%
Avg. humidity
0 m/s
Avg. wind
20 ☀️
Sunny Days
10 ⛅️
Cloudy
0 🌦
Rainy
Our opinion: Los Angeles has great weather in September.

Average temperature in Los Angeles in September

Here are the expected maximum, average and minimum temperatures in Los Angeles for September based on the historical data.
Last Year
Historical Data

The expected average maximum temperature in September is +32°C with a maximum of +39°C and a minimum of +16°C.

The average maximum temperature goes down 52% by the end of the month, compared with the beginning of the month, from +39°C to +27°C.

Is Los Angeles warm or cold in September?

Los Angeles is typically hot in September.

Maximum temperatures go up compared to the previous month from +33°C to +31°C. The minimum temperature also goes down from +20°C to +19°C.

Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.

September is one of the warmest months in Los Angeles, here is the comparison with other months:

Climate in Los Angeles in September

Los Angeles weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
Avg. temperature
+33°C+31°C+28°C
Min. temperature
+15°C+12°C+8°C
Max. temperature
+43°C+44°C+42°C
Rainfall
1 mm5 mm15 mm
Wind
0 m/s0 m/s0 m/s
Humidity
65%64%63%
Air pressure
1011 HPa1010 HPa1012 HPa
Sunny days
232018
Cloudy days
81012
Rainy days
001
Snowy days
000

September weather is still as great as in August. It’s getting colder in September. From +33°C in the day, the average maximum temperature lowers to +31°C. Prepare for more rain. Average rainfall goes from 1 mm to 5 mm. It feels drier, as humidity decreases from 65% to 64%. The average wind speed doesn’t change much during September, staying around 0 m/s. The days becoming less sunny, going from 23 sunny days in August to 20 in September.

October brings much the same weather, it remains great.

Wind

Wind speed in Los Angeles in September based on historical data.
Last Year
Historical Data

The average wind speed is 0 m/s getting up to 2 m/s which is a light breeze; barely moving the tree leaves.

The average wind speed in Los Angeles is gradually increasing during September, going from 0 m/s to 0 m/s over the course of the month.

Rain

Amount of rainfall in mm during September in Los Angeles based on historical data.
Last Year
Historical Data
Total precipitation in September is about 16 mm, with a 10% chance of rain on a typical day. The maximum amount of rainfall per day is around 12 mm, which is considered light rain. Los Angeles is amazing in September with as little as 3 rainy days on average, so plan adventures in the great outdoors.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Los Angeles wettest month is February, where a typical day has a 17% chance of precipitation and 82 mm of rainfall per day. August, on the other hand, is the driest month with a mere 0% chance of precipitation and 1 mm of rainfall per day.

How was the weather last September in Los Angeles?

This is the weather in Los Angeles in September 2023:
1 September
☀️
+39°C
2 September
☀️
+36°C
3 September
☀️
+37°C
4 September
☀️
+39°C
5 September
☀️
+37°C
6 September
☀️
+36°C
7 September
☀️
+38°C
8 September
☀️
+36°C
9 September
☁️
+36°C
10 September
🌧️
+33°C
11 September
☁️
+31°C
12 September
☀️
+30°C
13 September
☀️
+29°C
14 September
☀️
+28°C
15 September
☀️
+27°C
16 September
☀️
+27°C
17 September
☀️
+26°C
18 September
☁️
+25°C
19 September
☀️
+26°C
20 September
☀️
+27°C
21 September
☀️
+27°C
22 September
☀️
+30°C
23 September
☀️
+31°C
24 September
☀️
+31°C
25 September
☀️
+31°C
26 September
☀️
+32°C
27 September
☀️
+33°C
28 September
☀️
+32°C
29 September
☀️
+29°C
30 September
☀️
+27°C
In September 2023 Los Angeles had 26 sunny days, 3 cloudy days, and 1 rainy days. The average maximum temperature was +32°C, with an absolute maximum of +39°C and a minimum of +25°C. The average humidity was 64%, with a maximum of 100% and a minimum of 21%. The average wind speed was 0 m/s, with a maximum of 7 m/s and a minimum of 0 m/s.
Are you planning a trip in September?

Climate Change over Years

This is how Los Angeles climate have been changing during last 43 years period.

The climate in Los Angeles in September has not changed much over the last 43 years.

The average temperature was the lowest in 1986 (+29°C) and the highest in 2020 (+38°C). The driest year was 1979 with only 0 mm of rainfall, and the wettest year was 2020 with 0 mm.

FAQ

Frequently asked questions about the weather in Los Angeles in September:

Is September a good time to visit Los Angeles?

Yes, September is a great time to go to Los Angeles, the weather couldn’t be better. Be ready to get outside, explore and enjoy. Check what other months that are a good time to visit Los Angeles.

Can you sunbathe in Los Angeles in September?

Absolutely, September is hot in Los Angeles. Plan on beach and pool time, and ensure that you pack light and breathable options to stay comfortable.

Is Los Angeles rainy in September?

Los Angeles is usually dry in September. Plan your packing around outdoor activities and exploring.

Is it sunny in Los Angeles in September?

Yes, Los Angeles is sunny in September. Prepare for lots of rays. Don’t forget to pack your sunglasses and sunscreen, and maybe pick up a wide-brimmed hat when you arrive.

Other cities in USA

Check out the weather for other cities in USA.

Monthly weather in Los Angeles

Source of the data

For this page, we’ve looked at the typical weather in Los Angeles, based on historical hourly weather data from January 1, 1979, to December 31, 2022.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.