Weather for the Big Day Out is looking identical to last year. Thanks to a high pressure system over the North Island sunny, hot, weather is expected to last over the next 72 hours.

If you're going to the BDO there's one important thing to remember about the temperature - you'll probably be standing directly under the sun with no shelter...that means you can add at least 10 degrees to the temperature during the middle of the day.

Between about 11am and 4pm temperatures may well reach 35 to 40 degrees within the stadium out in the sun. Make sure you drink plenty of water in temperatures that high. If clouds roll in and that sou'westerly picks up then that will help cool things down just a little.

To help plan your day a little better, check out my detailed forecast below.

Basic Forecast

The forecast for Friday, according to our brand new forecasting site for Auckland is this:

FRIDAY: Mainly sunny and hot but south westerlies developing and picking up a little in the afternoon. A few harmless clouds drifting in from time to time.

High: Up to 25.

For the Big Day Out temperatures could be between 35 and 40 in the Stadium

Detailed forecast

9am - Sunny with 20 degrees in the shade

11am - Mostly sunny, 23 degrees in the shade (up to the late 20s in the stadium)

1pm - Sunny and cloudy periods, 24 degrees in the shade (lower 30s in the stadium)

3pm - South westerly winds picking up, 24 in the shade (mid 30s in the stadium)

5pm - Breezy sou'westers, a few clouds, 24 in the shade, (lower 30s in the stadium)

7pm - Few harmless clouds, sou'west winds, 22 in the shade.

9pm - Mostly clear, around 20 degrees.

Have an awesome day!

Are you heading to Big Day Out this year? If so, we want to hear from you.

We'd like you to send us your photos from this year's event so we can feature them online.

Please include your name with your photos and - if it's not clear - what the photo is of.

Click here to send us your Big Day Out 2009 photos.