How should athletes check Ironman South Africa race-day weather?

Use the race-day planner when the forecast window opens, then check official event and local safety guidance before final decisions.

Nelson Mandela Bay, Gqeberha

Ironman South Africa weather

Q: What is the typical weather for Ironman South Africa?

Ironman South Africa is usually held around late March to April. Nelson Mandela Bay is a coastal race where wind can shape the entire day even when temperatures look manageable.

Nelson Mandela Bay is a coastal race where wind can shape the entire day even when temperatures look manageable.

Ironmanlate March to AprilOcean swim

Typical race window

April weather in Nelson Mandela Bay, Gqeberha

Monthly climate normal from 2016-2025 archive data.

late March to April

Air temperature

16°C-22°C

Average wind

27 km/h

Peak daily wind

54 km/h

Wet-day chance

20%

A typical day in April averages 1.2 mm of precipitation, with average gusts around 51 km/h. Treat this as planning context, not a live forecast.

Jan

24°C

Feb

24°C

Mar

24°C

Apr

22°C

May

21°C

Jun

20°C

Jul

19°C

Aug

19°C

Sep

19°C

Oct

20°C

Nov

21°C

Dec

23°C

Swim

The bay swim can be affected by chop, swell and beach-condition decisions.

Bike

The bike can become demanding when sustained coastal wind builds across exposed roads.

Run

The run is usually less extreme than summer races, but humidity, wind and showers 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 Nelson Mandela Bay, Gqeberha prefilled.

Build your race-day read Browse races

Nelson Mandela Bay, Gqeberha

Ironman South Africa weather

Nelson Mandela Bay is a coastal race where wind can shape the entire day even when temperatures look manageable.

Ironmanlate March to AprilOcean swim

Typical race window

April weather in Nelson Mandela Bay, Gqeberha

Monthly climate normal from 2016-2025 archive data.

late March to April

Air temperature

16°C-22°C

Average wind

27 km/h

Peak daily wind

54 km/h

Wet-day chance

20%

A typical day in April averages 1.2 mm of precipitation, with average gusts around 51 km/h. Treat this as planning context, not a live forecast.

Jan

24°C

Feb

24°C

Mar

24°C

Apr

22°C

May

21°C

Jun

20°C

Jul

19°C

Aug

19°C

Sep

19°C

Oct

20°C

Nov

21°C

Dec

23°C

Swim

The bay swim can be affected by chop, swell and beach-condition decisions.

Bike

The bike can become demanding when sustained coastal wind builds across exposed roads.

Run

The run is usually less extreme than summer races, but humidity, wind and showers 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 Nelson Mandela Bay, Gqeberha prefilled.

Build your race-day read Browse races