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Malibu, California

Malibu Triathlon weather

Malibu is usually mild and coastal, with surf, marine layer and wind as the main weather factors.

OlympicSeptemberOcean swim

Typical race window

September weather in Malibu, California

Monthly climate normal from 2016-2025 archive data.

September
Air temperature

18°C-28°C

Average wind

14 km/h

Peak daily wind

23 km/h

Wet-day chance

4%

A typical day in September averages 0.3 mm of precipitation, with average gusts around 37 km/h. Treat this as planning context, not a live forecast.

Jan

18°C

Feb

19°C

Mar

18°C

Apr

21°C

May

22°C

Jun

25°C

Jul

28°C

Aug

29°C

Sep

28°C

Oct

26°C

Nov

22°C

Dec

19°C

Swim

Surf and beach conditions can be more important than the basic air forecast.

Bike

Coastal wind and road surface conditions affect handling and pacing.

Run

The run is usually comfortable, though sun exposure can increase quickly after marine layer clears.

Live race-day forecast

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