Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Old Man's Hat surfForecast / Gisborne and Mahia / New Zealand
48hr Weather and Surf, issued 12 am Saturday 20 Dec 2025 NZDTForecast update in hr min s Forecast update imminent
Old Man's Hat surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Old Man's Hat sea temperature is
18.2° C
(Which is slightly warmer than usual)How big are the waves at Old Man's Hat today?
The current surf forecast for Old Man's Hat at 6AM is: 0.5m 8s primary swell from a East direction (forecast issued at 12:00am December 20). An open ocean swell of 0.3m 6s is not directed at the surf break, a second open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (NZDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Dec) | 1.5ft (0.5m) | 8s |
| Afternoon (20 Dec) | 1.5ft (0.4m) | 8s |
| Evening (20 Dec) | 1.5ft (0.4m) | 9s |
Table - waves today at Old Man's Hat. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 20 | Sunday 21 | Monday 22 | ||||||||||||||||||||||
| 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 8 | 8 | 8 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 46 | 45 | 32 | 33 | 33 | 22 | 22 | 22 | 23 | 34 | 34 | 31 | 31 | 30 | 30 | 29 | 29 | 29 | 29 | 14 | 14 | 14 | 14 | 14 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | off | off | cross- off | cross- on | cross- on | cross- on | glass | off | off | off | cross- off | cross- off | cross- on | cross- on | cross- on | on | cross- on | on | cross- on | on | on |
High Tide / height (m) | 6:51AM 1.41 | 7:07PM 1.33 | 7:35AM 1.43 | 7:51PM 1.33 | 8:18AM 1.44 | |||||||||||||||||||
Low Tide / height (m) | 12:34AM 0.28 | 1:06PM 0.33 | 1:19AM 0.27 | 1:52PM 0.31 | 2:03AM 0.26 | 2:37PM 0.30 | ||||||||||||||||||
Saturday 20 | Sunday 21 | Monday 22 | ||||||||||||||||||||||
| Sunrise | - | - | - | 5:37 | - | - | - | - | - | - | - | 5:37 | - | - | - | - | - | - | - | 5:37 | - | - | - | - |
| Sunset | - | - | - | - | - | - | - | 8:31 | - | - | - | - | - | - | - | 8:32 | - | - | - | - | - | - | - | 8:34 |
 |  | |  |  | | | |  | | | | | | | | | | | | |  | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 20 | 19 | 19 | 17 | 16 | 17 | 16 | 16 | 16 | 15 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 17 |
| Feels °C (?) | 15 | 14 | 13 | 12 | 12 | 12 | 12 | 13 | 14 | 14 | 9 | 8 | 10 | 10 | 11 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 14 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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