New Zealand's top junior surfers will be battling it out on the waves at The Backdoor GromBash in Raglan this weekend.

It will be the last event before the winter months set in and for the first time this year World Surf League campaigner Ella Williams of Whanagamata will get a chance to compete in a domestic event.

Whangamata surfer and World Surf League competitor Ella Williams will be down at Manu Bay in Raglan for The Backdoor GromBash this weekend. Photo: Supplied

After a busy summer chasing WSL Qualifying Series points, Williams has a brief break from international events and opted to compete at the GromBash in the build up to events offshore.

Williams will compete in the Under 20 Girls Division against one of the biggest fields of surfers the junior events have seen this year.

She will be joined in Raglan by fellow Whangamata surfers Dune Kennings in the Under 20 men's category, and Dylan Preston in the Under 14 Men's category.

This weekend's conditions are expected to be small on Saturday morning but building throughout the day in to Sunday, with excellent conditions forecast for the final day of the event.

Backdoor will bring in their mobile skate park and set it up in the car park. They will also provide free breakfast for all the competitors at the event on both days.

If conditions permit, Today will see an impromptu speed surfing event which is open to every surfer.

Heats will be ten minutes, best one wave, three waves max. The top six heat scores from all of the heats will then qualify for the finals. The event kicks off at 2pm.

TOP FIVE RANKED SURFERS COMPETING AT THE BACKDOOR GROMBASH:

Under 20 Men's Top 5

1. Dune Kennings (Whmata)
2. Harrison Whiteside (ChCh)
3. Callum Chuter (Tau)
4. Riccardo Lucibella (Tara)
5. Andrew Fraser - MacKenzie (Tau)

Under 17 Men's Top 5

1. Daniel Farr (Tara)
2. Jonas Tawharu (Mnt)
3. Manu Scott-Arrieta (Sandy Bay)
4. Joshua Farr (Tara)
5. Jack Wilson (ChCh) / Lee Ririnui (Mnt)

Under 14 Men's Top 5

1. Dylan Preston (Whmata)
2. Caleb Cutmore (Ham)
3. Kaya Horne (Mnt)
4. William Van Der Beek (Mnt)
5. Luke Griffin (Mnt)

Under 20 Women's Top 5

1. Raiha Ensor (Mnt)
2. Claudia Fraser (Auck)
3. Gabriella Sansom (Auck)
4. Bianca Sansom (Auck)
5. Dayna Story (Gis)

Under 17 Women's Top 5

1. Elin Tawharu (Mnt)
2. Milly Crewe (Tara)
3. Britt Kindred (Muri)
4. Zhana Hutchison (Tara)
5. Kea Smith (Arataki)

Under 14 Women's Top 5

1. Gabrielle Paul (Piha)
2. Grace Pevats (Whngrei)
3. Georgia Wederell (Mnt)
4. Toni Power (Mnt)
5. Kai Woolf (Gis)

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