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Cascais, Lisbon Coast

Ironman 70.3 Cascais weather

Cascais usually brings Atlantic coastal wind, mild temperatures and a race read shaped by sea state.

70.3OctoberOcean swim

Typical race window

October weather in Cascais, Lisbon Coast

Monthly climate normal from 2016-2025 archive data.

October
Air temperature

16°C-21°C

Average wind

24 km/h

Peak daily wind

62 km/h

Wet-day chance

33%

A typical day in October averages 2.6 mm of precipitation, with average gusts around 49 km/h. Treat this as planning context, not a live forecast.

Jan

15°C

Feb

16°C

Mar

16°C

Apr

18°C

May

19°C

Jun

21°C

Jul

23°C

Aug

23°C

Sep

23°C

Oct

21°C

Nov

18°C

Dec

16°C

Swim

Atlantic chop, swell and water temperature are the key swim variables.

Bike

Wind direction along the coast can change the feel of otherwise fast sections.

Run

The run is often temperate, though sun and coastal gusts can still affect pacing.

Live race-day forecast

Build the exact read when your date matters.

This race page stays evergreen. For date, start time and expected segment durations, open the race-day planner with Cascais, Lisbon Coast prefilled.

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