What is the typical weather for London Triathlon?

London Triathlon is usually held around August. London is usually mild, but rain, wind and urban heat can all affect race-day comfort.

How should athletes check London Triathlon race-day weather?

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

London Docklands

London Triathlon weather

London is usually mild, but rain, wind and urban heat can all affect race-day comfort.

OlympicAugustInland-water swim

Typical race window

August weather in London Docklands

Monthly climate normal from 2016-2025 archive data.

August

Air temperature

14°C-23°C

Average wind

20 km/h

Peak daily wind

48 km/h

Wet-day chance

27%

A typical day in August averages 1.6 mm of precipitation, with average gusts around 38 km/h. Treat this as planning context, not a live forecast.

Jan

8°C

Feb

9°C

Mar

11°C

Apr

14°C

May

18°C

Jun

21°C

Jul

23°C

Aug

23°C

Sep

20°C

Oct

16°C

Nov

11°C

Dec

9°C

Swim

Dock swimming is sheltered from surf but depends on water quality and local event guidance.

Bike

Wet roads and gusts are more important than extreme temperatures.

Run

The run is typically manageable, with humidity and rain risk the main variables.

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 London Docklands prefilled.

Build your race-day read Browse races

London Docklands

London Triathlon weather

London is usually mild, but rain, wind and urban heat can all affect race-day comfort.

OlympicAugustInland-water swim

Typical race window

August weather in London Docklands

Monthly climate normal from 2016-2025 archive data.

August

Air temperature

14°C-23°C

Average wind

20 km/h

Peak daily wind

48 km/h

Wet-day chance

27%

A typical day in August averages 1.6 mm of precipitation, with average gusts around 38 km/h. Treat this as planning context, not a live forecast.

Jan

8°C

Feb

9°C

Mar

11°C

Apr

14°C

May

18°C

Jun

21°C

Jul

23°C

Aug

23°C

Sep

20°C

Oct

16°C

Nov

11°C

Dec

9°C

Swim

Dock swimming is sheltered from surf but depends on water quality and local event guidance.

Bike

Wet roads and gusts are more important than extreme temperatures.

Run

The run is typically manageable, with humidity and rain risk the main variables.

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 London Docklands prefilled.

Build your race-day read Browse races