January 20° · ☂ 5 February 20° · ☂ 5 March 21° · ☂ 4 ★ April23° · ☂ 2 ★ May24° · ☂ 1 June 27° · ☂ 0 July 30° · ☂ 0 August 31° · ☂ 0 September 30° · ☂ 1 October 27° · ☂ 1 ★ November23° · ☂ 3 December 19° · ☂ 5 Los Angeles in September:properly hot, almost no rain Los Angeles, United States · Records from 2006 to 2025. Not a forecast. Temperature partly station-corrected
Mean high 30° Hottest day 44.9° (2020)
Mean low 18° Coldest night 11.4° (2019)
Rain days 1 day 0-3 by year
Rainfall 4mm Daylight 12.9 → 11.9 h
Los Angeles's 12 months i Best: April, May and November
1 2 3 4 5 6 7 8 9 10 11 12
Trip types Beach Poorcool sea Sightseeing on foot Finemostly dry
Humidity 60% 0 muggy days
Clear days 21 days 1 overcast day
Mean wind 6 km/h Rarely windy
Sea temperature 20.4° 19-22.2° by year (last 6)
Sunrise / sunset (15th) 06:36 / 19:01 Daylight 12.9 → 11.9 h
Los Angeles in September Late summer heat lingers, and downtown's all-time heat record was set on 27 September 2010. Pack for late summer, not fall. Santa Ana winds can begin toward month end. Evenings stay warm, so the beach is still a good place to end the day.
It was a hot month: 30°C by day and 18°C after dark. A 12°C gap between afternoon and night meant dressing twice: once for the day, once for after dark. Rain fell on only 1 day on average. September could skip rain entirely: 13 of 20 years had none, while 2023 had 3 rain days.
Highs topped 30°C on 14 days of the month on average. Mixing in indoor stops at midday made sense. Not every year was typical: 2020 ran 2.9°C warmer than the mean, with highs of 32.9°C.
Date by date i Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
September 1 Wednesday 1 rain in 1 of 20 yrs 1/20 31° 19° September 2 Thursday 2 rain in 1 of 20 yrs 1/20 32° 19° September 3 Friday 3 rain in 0 of 20 yrs 0/20 33° 20° September 4 Saturday 4 rain in 0 of 20 yrs 0/20 33° 20° 1-4 rain on 3% of days 32° 19°
September 5 Sunday 5 rain in 0 of 20 yrs 0/20 33° 19° September 6 Monday 6 rain in 0 of 20 yrs 0/20 33° 19° September 7 Tuesday 7 rain in 0 of 20 yrs 0/20 32° 19° September 8 Wednesday 8 rain in 0 of 20 yrs 0/20 31° 19° September 9 Thursday 9 rain in 2 of 20 yrs 2/20 31° 19° September 10 Friday 10 rain in 0 of 20 yrs 0/20 30° 18° September 11 Saturday 11 rain in 0 of 20 yrs 0/20 30° 18° 5-11 rain on 1% of days 31° 19°
September 12 Sunday 12 rain in 0 of 20 yrs 0/20 30° 18° September 13 Monday 13 rain in 0 of 20 yrs 0/20 29° 18° September 14 Tuesday 14 rain in 0 of 20 yrs 0/20 30° 17° September 15 Wednesday 15 rain in 1 of 20 yrs 1/20 29° 17° September 16 Thursday 16 rain in 0 of 20 yrs 0/20 29° 17° September 17 Friday 17 rain in 0 of 20 yrs 0/20 29° 17° September 18 Saturday 18 rain in 1 of 20 yrs 1/20 29° 17° 12-18 rain on 1% of days 29° 17°
September 19 Sunday 19 rain in 0 of 20 yrs 0/20 28° 17° September 20 Monday 20 rain in 0 of 20 yrs 0/20 28° 17° September 21 Tuesday 21 rain in 1 of 20 yrs 1/20 28° 17° September 22 Wednesday 22 rain in 1 of 20 yrs 1/20 29° 17° September 23 Thursday 23 rain in 0 of 20 yrs 0/20 30° 16° September 24 Friday 24 rain in 0 of 20 yrs 0/20 31° 17° September 25 Saturday 25 rain in 0 of 20 yrs 0/20 30° 17° 19-25 rain on 1% of days 29° 17°
September 26 Sunday 26 rain in 0 of 20 yrs 0/20 30° 17° September 27 Monday 27 rain in 0 of 20 yrs 0/20 30° 17° September 28 Tuesday 28 rain in 1 of 20 yrs 1/20 29° 17° September 29 Wednesday 29 rain in 0 of 20 yrs 0/20 29° 17° September 30 Thursday 30 rain in 1 of 20 yrs 1/20 30° 16°
26-30 rain on 2% of days 29° 17°
1-4 rain on 3% of days 32° 19° 5-11 rain on 1% of days 31° 19° 12-18 rain on 1% of days 29° 17° 19-25 rain on 1% of days 29° 17° 26-30 rain on 2% of days 29° 17°
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
September 1 Friday 1 rain in 1 of 20 yrs 1/20 31° 19° September 2 Saturday 2 rain in 1 of 20 yrs 1/20 32° 19° 1-2 rain on 5% of days 32° 19°
September 3 Sunday 3 rain in 0 of 20 yrs 0/20 33° 20° September 4 Monday 4 rain in 0 of 20 yrs 0/20 33° 20° September 5 Tuesday 5 rain in 0 of 20 yrs 0/20 33° 19° September 6 Wednesday 6 rain in 0 of 20 yrs 0/20 33° 19° September 7 Thursday 7 rain in 0 of 20 yrs 0/20 32° 19° September 8 Friday 8 rain in 0 of 20 yrs 0/20 31° 19° September 9 Saturday 9 rain in 2 of 20 yrs 2/20 31° 19° 3-9 rain on 1% of days 32° 19°
September 10 Sunday 10 rain in 0 of 20 yrs 0/20 30° 18° September 11 Monday 11 rain in 0 of 20 yrs 0/20 30° 18° September 12 Tuesday 12 rain in 0 of 20 yrs 0/20 30° 18° September 13 Wednesday 13 rain in 0 of 20 yrs 0/20 29° 18° September 14 Thursday 14 rain in 0 of 20 yrs 0/20 30° 17° September 15 Friday 15 rain in 1 of 20 yrs 1/20 29° 17° September 16 Saturday 16 rain in 0 of 20 yrs 0/20 29° 17° 10-16 rain on 1% of days 30° 18°
September 17 Sunday 17 rain in 0 of 20 yrs 0/20 29° 17° September 18 Monday 18 rain in 1 of 20 yrs 1/20 29° 17° September 19 Tuesday 19 rain in 0 of 20 yrs 0/20 28° 17° September 20 Wednesday 20 rain in 0 of 20 yrs 0/20 28° 17° September 21 Thursday 21 rain in 1 of 20 yrs 1/20 28° 17° September 22 Friday 22 rain in 1 of 20 yrs 1/20 29° 17° September 23 Saturday 23 rain in 0 of 20 yrs 0/20 30° 16° 17-23 rain on 2% of days 28° 17°
September 24 Sunday 24 rain in 0 of 20 yrs 0/20 31° 17° September 25 Monday 25 rain in 0 of 20 yrs 0/20 30° 17° September 26 Tuesday 26 rain in 0 of 20 yrs 0/20 30° 17° September 27 Wednesday 27 rain in 0 of 20 yrs 0/20 30° 17° September 28 Thursday 28 rain in 1 of 20 yrs 1/20 29° 17° September 29 Friday 29 rain in 0 of 20 yrs 0/20 29° 17° September 30 Saturday 30 rain in 1 of 20 yrs 1/20 30° 16° 24-30 rain on 1% of days 30° 17°
1-2 rain on 5% of days 32° 19° 3-9 rain on 1% of days 32° 19° 10-16 rain on 1% of days 30° 18° 17-23 rain on 2% of days 28° 17° 24-30 rain on 1% of days 30° 17°
Tap another date to change
2006 none
2007 none
2008 none
2009 none
2010 none
2011 none
2012 none
2013 none
2014 1mm
2015 none
2016 none
2017 none
2018 none
2019 none
2020 none
2021 none
2022 15mm
2023 none
2024 none
2025 none
Holidays in September (2027) 1 Local public holiday or break (busier, pricier)
Holidays in September (2028)
Day by day temperature i 15° 25° 36° 46° 1 8 15 22 29 30
Your trip dates, the past 20 years Trip dates September 1 (Wed) 2 (Thu) 3 (Fri) 4 (Sat) 5 (Sun) 6 (Mon) 7 (Tue) 8 (Wed) 9 (Thu) 10 (Fri) 11 (Sat) 12 (Sun) 13 (Mon) 14 (Tue) 15 (Wed) 16 (Thu) 17 (Fri) 18 (Sat) 19 (Sun) 20 (Mon) 21 (Tue) 22 (Wed) 23 (Thu) 24 (Fri) 25 (Sat) 26 (Sun) 27 (Mon) 28 (Tue) 29 (Wed) 30 (Thu) ~ September 1 (Wed) 2 (Thu) 3 (Fri) 4 (Sat) 5 (Sun) 6 (Mon) 7 (Tue) 8 (Wed) 9 (Thu) 10 (Fri) 11 (Sat) 12 (Sun) 13 (Mon) 14 (Tue) 15 (Wed) 16 (Thu) 17 (Fri) 18 (Sat) 19 (Sun) 20 (Mon) 21 (Tue) 22 (Wed) 23 (Thu) 24 (Fri) 25 (Sat) 26 (Sun) 27 (Mon) 28 (Tue) 29 (Wed) 30 (Thu) 1-7 8-14 15-21 22-end Whole month
You can also click two dates on the axis. Hover a cell to see that day's rain. By year Driest trips first
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Trip rain days Month rain days Tap a date to start, tap another to end. Each cell is that date in one year. '06 '07 '08 '09 '10 '11 '12 '13 '14 '15 '16 '17 '18 '19 '20 '21 '22 '23 '24 '25
of 20 10 Fri Pick September 10
0 11 Sat Pick September 11
0 12 Sun Pick September 12
0 13 Mon Pick September 13
0 14 Tue Pick September 14
0 15 Wed Pick September 15
1 16 Thu Pick September 16
0 17 Fri Pick September 17
0 18 Sat Pick September 18
1 19 Sun Pick September 19
0 20 Mon Pick September 20
0 21 Tue Pick September 21
1 22 Wed Pick September 22
1 23 Thu Pick September 23
0 24 Fri Pick September 24
0 25 Sat Pick September 25
0 26 Sun Pick September 26
0 27 Mon Pick September 27
0 28 Tue Pick September 28
1 29 Wed Pick September 29
0 30 Thu Pick September 30
1 Dates outside your trip are dimmed.
One row per year, one cell per day. 2006 had 0 rain days, 2023 had 3.
Los Angeles through the year Month High Low Rain days Rainfall Sea January 20° 10° 5 days 55mm 15° February 20° 10° 5 days 54mm 15° March 21° 11° 4 days 40mm 15° April Good 23° 12° 2 days 13mm 15° May Good 24° 14° 1 day 5mm 17° June 27° 16° 0 days 1mm 18° July 30° 18° 0 days 1mm 20° August 31° 18° 0 days 0mm 21° September 30° 18° 1 day 4mm 20° October 27° 15° 1 day 9mm 19° November Good 23° 12° 3 days 26mm 17° December 19° 10° 5 days 68mm 16°
Common questions Does it rain a lot in Los Angeles in September? Over the past 20 years September averaged 1 rain day (1 mm or more) out of 30. Individual years ran from 0 in the driest to 3 in the wettest.
What should I wear in Los Angeles in September? Days averaged 30°C and nights 18°C. Pack a light layer for the evenings, T-shirts, and sunscreen plus a hat.
Can you swim in Los Angeles in September? Sea surface temperature averaged 20.4°C in September, more for a paddle than a swim. Year to year it ranged 19-22.2°C. Check local flags for waves and jellyfish on the day.
Is September a good time to visit Los Angeles? On warmth and rain days alone, Los Angeles's easiest months were April, May and November. September ranked 8 of 12.
How many clear days does Los Angeles get in September? About 21 clear days (under 30% cloud on average) and 1 overcast day (80% or more).
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