Los Angeles · September
Run in the morning.
Average high is 88°F with a 64°F overnight low. Dry month — only 3 measurable rain days on average. Dry heat climbs fast after sunrise — get out in the cooler morning hours.
Avg high / low
88° / 64°F
Humidity
62%
Rain days
3/mo
Wind
10 mph
What September feels like in Los Angeles
Sunrise
06:36
Mid-month average
Sunset
18:58
Mid-month average
Time-of-day breakdown
Morning
Steady cool air, low wind, and good light. The standard runner window in most months.
Midday
Heat peaks here. Skip unless you've got shade and pace tolerance.
Evening
Cools off after sunset but still warm. Good for easy efforts; avoid hard intervals if you're chasing pace.
What to wear running in Los Angeles in September
The kit for September in Los Angeles: light, breathable, and moisture-wicking — singlet or short-sleeve only.
September vs the surrounding months
vs August
-2° avg high
+2 rain days
Los Angeles in August →
September
88°F avg high
3 rain days
Best: morning
vs October
+5° avg high
-1 rain days
Los Angeles in October →
Frequently Asked Questions
What is the best time of day to run in Los Angeles in September?+
Morning. Dry heat climbs fast after sunrise — get out in the cooler morning hours.
What's the average temperature in Los Angeles in September?+
Average high 88°F, average low 64°F.
How does September compare to surrounding months in Los Angeles?+
Compared to August (avg high 90°F), September is cooler. Compared to October (avg high 83°F), September is warmer.
Does it rain often in Los Angeles in September?+
Expect about 3 measurable rain days in September, on average.