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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 21 Aug 2025 NZST
How big are the waves at Blacks Reef today?
The current surf forecast for Blacks Reef at 1AM is: 1.4m 16s primary swell from a South direction and 1.2m 8s secondary swell from a Southeast direction, 1.9m 8s secondary swell from a South direction (forecast issued at 11:00pm August 21). The wind direction is predicted to be onshore.
| Time (NZST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (22 Aug) | 6.5ft (2.0m) | 14s |
| Afternoon (22 Aug) | 6.5ft (2.0m) | 13s |
| Evening (22 Aug) | 6ft (1.8m) | 12s |
Table - waves today at Blacks Reef. (Swell directed towards the surf break)
Friday 22 | Saturday 23 | Sunday 24 | ||||||||||||||||||||||
| 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) (?) | 16 | 16 | 15 | 14 | 14 | 14 | 13 | 13 | 12 | 12 | 11 | 11 | 10 | 14 | 14 | 13 | 10 | 10 | 9 | 9 | 9 | 9 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
| Energy (?) | 1498 | 1598 | 2449 | 1653 | 1677 | 1295 | 1408 | 1325 | 948 | 896 | 712 | 686 | 637 | 995 | 1078 | 989 | 511 | 444 | 307 | 245 | 192 | 131 | 230 | 187 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | on | on | on | on | on | cross- on | on | cross- on | cross- on | cross- on | cross- on | cross- on | glass | cross- off | off | cross- off | cross- off | glass | glass | cross- off | cross- off | cross- off |
High Tide / height (m) | 4:18AM 1.60 | 4:44PM 1.72 | 5:12AM 1.58 | 5:37PM 1.71 | 6:04AM 1.57 | |||||||||||||||||||
Low Tide / height (m) | 10:12PM 0.23 | 10:32AM 0.21 | 11:06PM 0.23 | 11:24AM 0.20 | 11:58PM 0.23 | 12:12PM 0.20 | ||||||||||||||||||
Friday 22 | Saturday 23 | Sunday 24 | ||||||||||||||||||||||
| Sunrise | - | - | - | - | 6:46 | - | - | - | - | - | - | - | 6:45 | - | - | - | - | - | - | - | 6:43 | - | - | - |
| Sunset | - | - | - | - | - | - | 5:37 | - | - | - | - | - | - | - | 5:37 | - | - | - | - | - | - | - | 5:38 | - |
 |  | | |  |  | | |  | | |  |  | | |  | | | | |  | | | | |
Rain (mm) | 1 | - | 1 | 1 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 10 | 10 | 9 | 9 | 10 | 10 | 10 | 10 | 9 | 9 | 8 | 7 | 8 | 10 | 10 | 9 | 9 | 9 | 8 | 8 | 10 | 12 | 12 | 10 |
| Feels °C (?) | 5 | 5 | 4 | 4 | 6 | 6 | 6 | 6 | 6 | 7 | 5 | 4 | 6 | 8 | 8 | 6 | 6 | 7 | 6 | 6 | 8 | 9 | 8 | 7 |
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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
Wind reports 15 km away suggest it is still onshore at Blacks Reef (moderate winds from the SSW at Mahia Automatic Weather Station). 2.3m 8s swell from the S with a 1.2m 15s groundswell, also from the S. 2 swells combining so expect closeout sets.
1 h 53 min ago
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