North Sails Weather Forecast – Tuesday 21 January

North Sails have enlisted Roger ‘Clouds’ Badham – one of the most respected meteorologists in yachting – to provide us with a daily weather forecast for BOISW.

‘Clouds’ has forecast for nine America’s Cups, seven Olympic Games, 30 around the world yacht races and over 35 Sydney to Hobart races, along with countless yacht races and regattas all around the world.

North Sails Weather Forecasts will be issued daily before racing begins – view them on the website, Facebook, email and BOISW app.

Weather forecast – Tuesday 21 January, 2020

High pressure just west of the North Island expected to cross Northland tonight.
That high cell just to the north of Cape Reinga tomorrow and move slowly just a little to north on Thursday and then remain just to the north on Friday.
All that means that the flow across Northland and the BOI will be rather light from SW-W for most days – and that is not enough strength to hold out an east coast sea breeze.
That sea breeze is typical from the N and is not very strong unless assisted by the NW flow aloft that then feeds in some momentum an the N breeze can and will build during the afternoons.
All this means that the weather will be rather warm and mostly sunny.

A mostly sunny day
Offshore SW flow should be max around daybreak then soften as the air warms and then will shift onshore from NE-N from mid and late morning.
The N then NNW breeze this afternoon should be the strongest of the afternoons this week

FORECAST (magnetic direction and average wind speed in kts, not gusts)
08 180-200/6-9
10 S-SW easing then watching for N/2-5
12 340-360/10-13
14 330-360/14-17
16 330-350/15-18
18 320-340/14-17

WED 22 SW/4-8 then W-NW with NNW/12-15 early to mid afternoon
THU 23 S-SW/3-5 then variable then NW-N/12-15
FRI 24 SW-W-WNW/7-10 then back left to WSW-SW/10-15