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Blacks Reef Surf Forecast
/ Gisborne and Mahia (37 surf breaks) /
Surf Forecasts:
Blacks Reef surfForecast / Gisborne and Mahia / New Zealand
48hr Weather and Surf, issued 11 pm Thursday 18 Sep 2025 NZST
How big are the waves at Blacks Reef today?
The current surf forecast for Blacks Reef at 2AM is: 0.5m 14s primary swell from a South direction and 0.4m 10s secondary swell from a South direction, 0.8m 4s secondary swell from a West-southwest direction (forecast issued at 11:00pm September 18). The wind direction is predicted to be cross-onshore.
| Time (NZST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Sep) | 10ft (3.0m) | 8s |
| Afternoon (19 Sep) | 8ft (2.5m) | 8s |
| Evening (19 Sep) | 7ft (2.2m) | 9s |
Table - waves today at Blacks Reef. (Swell directed towards the surf break)
Friday 19 | Saturday 20 | Sunday 21 | ||||||||||||||||||||||
| 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 14 | 14 | 6 | 8 | 8 | 8 | 8 | 9 | 10 | 9 | 9 | 9 | 10 | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 12 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 50 | 70 | 103 | 358 | 916 | 1046 | 990 | 798 | 786 | 725 | 539 | 471 | 427 | 405 | 485 | 1130 | 878 | 749 | 400 | 420 | 413 | 273 | 203 | 116 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross- on | on | on | on | on | on | on | on | cross | cross | off | cross- off | cross- off | off | off | cross- off | cross- off | cross- off | off | cross- off | cross- off | cross- off |
High Tide / height (m) | 3:06AM 1.52 | 3:30PM 1.62 | 3:59AM 1.49 | 4:21PM 1.60 | 4:51AM 1.50 | 5:11PM 1.58 | ||||||||||||||||||
Low Tide / height (m) | 8:57PM 0.22 | 9:17AM 0.23 | 9:50PM 0.24 | 10:11AM 0.23 | 10:42PM 0.25 | 11:02AM 0.25 | ||||||||||||||||||
Friday 19 | Saturday 20 | Sunday 21 | ||||||||||||||||||||||
| Sunrise | - | - | - | - | 6:03 | - | - | - | - | - | - | - | 6:01 | - | - | - | - | - | - | - | 6:00 | - | - | - |
| Sunset | - | - | - | - | - | - | - | 6:01 | - | - | - | - | - | - | - | 6:02 | - | - | - | - | - | - | - | 6:02 |
 |  | |  |  |  | |  | | | | |  | | | | | | |  | | | | | |
Rain (mm) | - | - | - | 1 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 15 | 12 | 12 | 10 | 10 | 11 | 10 | 10 | 9 | 8 | 7 | 6 | 9 | 13 | 13 | 10 | 9 | 7 | 7 | 8 | 11 | 16 | 16 | 13 |
| Feels °C (?) | 10 | 6 | 6 | 2 | 2 | 3 | 2 | 3 | 4 | 4 | 4 | 3 | 6 | 9 | 7 | 3 | 4 | 3 | 3 | 4 | 6 | 11 | 11 | 9 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Gisborne and Mahia
Still cross-shore at Blacks Reef (moderate winds from the W at Mahia Automatic Weather Station 15 km from Blacks Reef). 0.5m 10s swell from the S with a 0.4m 14s groundswell, also from the S and a 0.3m 6s windswell, also from the SSW. 3 swells combining to make bigger set waves.
1 h 2 min ago
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