Onjuku Surf Forecast and Surf Report

Alright, Rusty here. Let’s break down Onjuku for the next couple of weeks in feet and miles per hour.

The first few days are pretty ordinary. On the 4th of September, we’ve got waves around 2 ft from the south, but the wind’s blowing from the NE at 6 mph, making for messy conditions. Not worth getting wet for. The 5th and 6th see the swell building to 5 ft-8 ft from the east, but the wind is still rough, and the period is short (6-8 seconds), so it’s just choppy. The combined swell energy is moderate (236-970), but the quality is poor.

The 7th of September is dangerous – 10 ft from the east with a near gale onshore wind at 37 mph. That’s only for experts, and even then, it’s sketchy. The energy is huge (1859). Conditions stay rough through the 8th and 9th, with swell up to 8 ft but cross-onshore winds ruining the surface.

Here’s the bright spot: on the 10th of September, Thursday afternoon, the wind swings to NNE at 9 mph, going offshore, and we get 5 ft from the south. The combined energy is still solid (782), and the report says expect very good surf. Onjuku is inconsistent and can get crowded sometimes, but when the wind is offshore like that, it’s your best bet. Water temp is about average for this time of year.

The 11th of September morning is also good – glassy conditions with light wind from the south at just 3 mph, and 4 ft from the east. That’s clean and fun for intermediates. The period is short (7 seconds), so it won’t have much push, but the glassy surface makes it work. After that, the 12th through 13th are small and weak.

From the 14th onward, we’ve got some marginal options. The 14th morning has 5 ft from the east with a long period (13 seconds) and cross-off NE wind at 16 mph, giving clean waves with strong energy (1059). That’s a groundswell, so at a beach break, it might be a bit straight, but it’s rideable. The 15th morning and afternoon are the best of the second week: 4 ft-4 ft from the east-southeast, clean with a gentle cross-off breeze. Good for a session.

After the 15th, the 16th through 19th are poor again – cross-onshore winds, dropping swell, and weak energy. The 17th morning has a brief window with light WNW wind and 4 ft from the east, but the period is short (8 seconds), so it’s not a standout.

Best windows: Thursday afternoon the 10th and the morning of the 15th. The 11th morning is also worth it for clean, small waves. The rest is either blown out or too small.

Stay stoked,
Rusty

Read more