Round the Bays fun-runners should prepare for a spot of moisture Sunday morning, a blip in an otherwise fine weekend.
A weak front moving up from the south will bring a small chance of a light shower, though any rain should clear by the afternoon, MetService meteorologist Dan Corbett said.
''It's not going to be one of those nasty ones - almost a blink-and-you-miss-it shower.''
The front would appear before the marathon started at 8am, bringing morning cloud and light winds, and keeping temperatures comfortable for runners at 12 to 15 degrees Celsius for most of the event, he said.
For those thinking of a last-minute pre-training run on Saturday, the weather should be mainly fine, with a high of 21 degrees.
''Overall the weekend is looking pretty good for outdoor plans...with only one small fly in the ointment.''
Sunday afternoon will see a high-pressure system arrive, which will bring warm, settled weather through to Wednesday.
Early forecasts were predicting the fine weather might continue for the rest of the week, Mr Corbett said.
- © Fairfax NZ News
Do you intentionally buy organic food?Related story: Wellingtonians driving organic food mainstream