Rugby World Cup 2015: Wet weather set for semifinal

Richie McCaw and the All Blacks are used to playing in wet weather. Photo / Getty

The Springboks and All Blacks are set to go head-to-head in their Rugby World Cup semifinal in the pouring rain.

London's Met Office's website shows a 70 per cent probability of rain at the local kick-off time of Saturday 5pm in England at Twickenham on Sunday morning NZ time.

Rain is expected throughout the morning, but is tipped to peak at kick-off time for the eagerly-awaited semi.

Opinions are divided on which team wet conditions would favour.

South Africa's forward-dominated game would, on the surface, be favoured, especially with a wet, slippery ball working against the All Blacks' wide, flowing game.

But the All Blacks have an equally impressive record in wet matches - they get enough of them in New Zealand - and there is a theory that their superior fitness will also become evident late in a sodden game.

The wet weather could also mean that the All Blacks perform the haka in the rain - making the pre-match ritual appear even more fierce.

One of the most viewed haka videos on YouTube was when the All Blacks Sevens side performed Ka Mate in the pouring rain after winning the Hong Kong Sevens.

Temperature-wise it's predicted to be 13 degrees Celsius at kick-off.