Gonna.surf recommendations demonstrations

Which recommendation is gonna.surf actually giving, based on the surf conditions?

This page shows a set of simulated surf forecast situations, to show when the bad / not-so-good / fair / good recommendations are given. We use it internally to tweak our recommendations logic, and thought to make it public, for whoever is curious about understanding the system.

The sample surf conditions below are for a spot facing North.

Simulated surf forecast conditions

Offshore wind

Low wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
offshore 5 km/h S

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
offshore 5 km/h S

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
offshore 5 km/h S

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
offshore 5 km/h S

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
offshore 5 km/h S

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
offshore 5 km/h S

Medium-low wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
offshore 15 km/h S

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
offshore 15 km/h S

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
offshore 15 km/h S

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
offshore 15 km/h S

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
offshore 15 km/h S

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
offshore 15 km/h S

Medium-high wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
offshore 20 km/h S

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
offshore 20 km/h S

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
offshore 20 km/h S

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
offshore 20 km/h S

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
offshore 20 km/h S

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
offshore 20 km/h S

High wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
offshore 30 km/h S

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
offshore 30 km/h S

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
offshore 30 km/h S

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
offshore 30 km/h S

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
offshore 30 km/h S

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
offshore 30 km/h S

Very high wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
offshore 43 km/h S

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
offshore 43 km/h S

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
offshore 43 km/h S

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
offshore 43 km/h S

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
offshore 43 km/h S

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
offshore 43 km/h S

Cross-off wind

Low wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
cross-off 5 km/h SW

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
cross-off 5 km/h SW

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
cross-off 5 km/h SW

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
cross-off 5 km/h SW

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
cross-off 5 km/h SW

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
cross-off 5 km/h SW

Medium-low wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
cross-off 15 km/h SW

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
cross-off 15 km/h SW

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
cross-off 15 km/h SW

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
cross-off 15 km/h SW

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
cross-off 15 km/h SW

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
cross-off 15 km/h SW

Medium-high wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
cross-off 20 km/h SW

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
cross-off 20 km/h SW

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
cross-off 20 km/h SW

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
cross-off 20 km/h SW

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
cross-off 20 km/h SW

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
cross-off 20 km/h SW

High wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
cross-off 30 km/h SW

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
cross-off 30 km/h SW

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
cross-off 30 km/h SW

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
cross-off 30 km/h SW

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
cross-off 30 km/h SW

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
cross-off 30 km/h SW

Very high wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
cross-off 43 km/h SW

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
cross-off 43 km/h SW

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
cross-off 43 km/h SW

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
cross-off 43 km/h SW

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
cross-off 43 km/h SW

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
cross-off 43 km/h SW

Cross wind

Low wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
cross 5 km/h W

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
cross 5 km/h W

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
cross 5 km/h W

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
cross 5 km/h W

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
cross 5 km/h W

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
cross 5 km/h W

Medium-low wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
cross 15 km/h W

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
cross 15 km/h W

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
cross 15 km/h W

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
cross 15 km/h W

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
cross 15 km/h W

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
cross 15 km/h W

Medium-high wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
cross 20 km/h W

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
cross 20 km/h W

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
cross 20 km/h W

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
cross 20 km/h W

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
cross 20 km/h W

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
cross 20 km/h W

High wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
cross 30 km/h W

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
cross 30 km/h W

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
cross 30 km/h W

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
cross 30 km/h W

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
cross 30 km/h W

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
cross 30 km/h W

Very high wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
cross 43 km/h W

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
cross 43 km/h W

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
cross 43 km/h W

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
cross 43 km/h W

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
cross 43 km/h W

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
cross 43 km/h W

Cross-on wind

Low wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
cross-on 5 km/h NW

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
cross-on 5 km/h NW

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
cross-on 5 km/h NW

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
cross-on 5 km/h NW

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
cross-on 5 km/h NW

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
cross-on 5 km/h NW

Medium-low wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
cross-on 15 km/h NW

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
cross-on 15 km/h NW

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
cross-on 15 km/h NW

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
cross-on 15 km/h NW

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
cross-on 15 km/h NW

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
cross-on 15 km/h NW

Medium-high wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
cross-on 20 km/h NW

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
cross-on 20 km/h NW

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
cross-on 20 km/h NW

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
cross-on 20 km/h NW

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
cross-on 20 km/h NW

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
cross-on 20 km/h NW

High wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
cross-on 30 km/h NW

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
cross-on 30 km/h NW

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
cross-on 30 km/h NW

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
cross-on 30 km/h NW

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
cross-on 30 km/h NW

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
cross-on 30 km/h NW

Very high wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
cross-on 43 km/h NW

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
cross-on 43 km/h NW

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
cross-on 43 km/h NW

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
cross-on 43 km/h NW

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
cross-on 43 km/h NW

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
cross-on 43 km/h NW

Onshore wind

Low wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
onshore 5 km/h N

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
onshore 5 km/h N

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
onshore 5 km/h N

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
onshore 5 km/h N

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
onshore 5 km/h N

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
onshore 5 km/h N

Medium-low wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
onshore 15 km/h N

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
onshore 15 km/h N

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
onshore 15 km/h N

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
onshore 15 km/h N

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
onshore 15 km/h N

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
onshore 15 km/h N

Medium-high wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
onshore 20 km/h N

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
onshore 20 km/h N

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
onshore 20 km/h N

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
onshore 20 km/h N

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
onshore 20 km/h N

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
onshore 20 km/h N

High wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
onshore 30 km/h N

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
onshore 30 km/h N

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
onshore 30 km/h N

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
onshore 30 km/h N

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
onshore 30 km/h N

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
onshore 30 km/h N

Very high wind speed

Very low swell power

Swell
1 kW - 4 s0.6 m NW
Wind
onshore 43 km/h N

Low swell power

Swell
4 kW - 7 s1.1 m NW
Wind
onshore 43 km/h N

Medium-low swell power

Swell
14 kW - 12 s1.5 m NW
Wind
onshore 43 km/h N

Medium-high swell power

Swell
26 kW - 20 s1.6 m NW
Wind
onshore 43 km/h N

High swell power

Swell
53 kW - 20 s2.3 m NW
Wind
onshore 43 km/h N

Very high swell power

Swell
92 kW - 16 s3.4 m NW
Wind
onshore 43 km/h N