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:
Ranganunu Harbour surfForecast / Northland / New Zealand
48hr Weather and Surf, issued 6 pm Thursday 18 Dec 2025 NZDTForecast update in hr min s Forecast update imminent
Ranganunu Harbour surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Ranganunu Harbour sea temperature is
19.6° C
(Which is slightly warmer than usual)How big are the waves at Ranganunu Harbour today?
The current surf forecast for Ranganunu Harbour at 8PM is: 0.4m 11s primary swell from a North direction and 0.5m 8s secondary swell from a East direction (forecast issued at 06:00pm December 18). An open ocean swell of 0.5m 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 (18 Dec) | - | - |
| Afternoon (18 Dec) | 1.5ft (0.4m) | 11s |
| Evening (18 Dec) | 1.5ft (0.4m) | 10s |
Table - waves today at Ranganunu Harbour. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | |||||||||||||||||||||
| 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 | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 11 | 11 | 10 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 38 | 37 | 33 | 46 | 46 | 44 | 69 | 68 | 68 | 69 | 69 | 112 | 103 | 94 | 94 | 94 | 97 | 100 | 100 | 92 | 87 | 86 | 86 | 86 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross | cross | cross- off | cross- off | cross- off | cross- off | cross | cross | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 8:17PM 1.86 | 8:57AM 1.95 | 9:00PM 1.87 | 9:38AM 1.99 | 9:41PM 1.90 | 10:18AM 2.03 | ||||||||||||||||||
Low Tide / height (m) | 1:39PM 0.66 | 1:56AM 0.52 | 2:23PM 0.64 | 2:38AM 0.49 | 3:06PM 0.62 | 3:20AM 0.46 | ||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:07 | - | - | - | - | - | - | - | 6:09 | - | - | - | - | - | - | - | 6:09 | - | - |
| Sunset | - | 8:37 | - | - | - | - | - | - | - | 8:37 | - | - | - | - | - | - | - | 8:38 | - | - | - | - | - | - |
 |  |  |  |  |  | | | | | | | | |  | | | | | | |  | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | 1 | 3 | - |
| Temp. °C | 19 | 17 | 16 | 16 | 16 | 17 | 18 | 20 | 20 | 19 | 18 | 18 | 18 | 18 | 20 | 22 | 21 | 20 | 18 | 18 | 18 | 17 | 17 | 19 |
| Feels °C (?) | 14 | 13 | 14 | 15 | 15 | 16 | 16 | 17 | 16 | 16 | 17 | 16 | 16 | 16 | 18 | 19 | 18 | 19 | 18 | 18 | 19 | 18 | 18 | 18 |
- 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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