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Sponge bay Surf Forecast
/ Gisborne and Mahia (37 surf breaks) /
Surf Forecasts:
Sponge bay surfForecast / Gisborne and Mahia / New Zealand
48hr Weather and Surf, issued 5 am Wednesday 17 Sep 2025 NZST
How big are the waves at Sponge bay today?
The current surf forecast for Sponge bay at 10AM is: 0.6m 10s primary swell from a South-southeast direction and 0.3m 12s secondary swell from a South-southeast direction (forecast issued at 05:00am September 17). The wind direction is predicted to be cross-offshore.
| Time (NZST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Sep) | 2ft (0.6m) | 10s |
| Afternoon (17 Sep) | 1.5ft (0.5m) | 10s |
| Evening (17 Sep) | 1.5ft (0.5m) | 10s |
Table - waves today at Sponge bay. (Swell directed towards the surf break)
Wednesday 17 | Thursday 18 | Friday 19 | Sat 20 | |||||||||||||||||||||
| 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 | 9 PM | 0 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 14 | 13 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 10 | 10 | 10 | 10 | 10 | 15 | 14 | 6 | 7 | 8 | 8 | 8 | 9 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 107 | 96 | 80 | 65 | 50 | 51 | 49 | 49 | 38 | 21 | 27 | 27 | 20 | 11 | 10 | 21 | 54 | 140 | 355 | 504 | 655 | 720 | 896 | 1184 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross- on | on | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 1:03AM 1.78 | 1:39PM 1.84 | 2:10AM 1.72 | 2:48PM 1.81 | 3:37AM 1.72 | 4:10PM 1.82 | ||||||||||||||||||
Low Tide / height (m) | 7:24AM 0.61 | 8:03PM 0.72 | 8:27AM 0.65 | 9:15PM 0.72 | 9:43AM 0.65 | 10:25PM 0.69 | ||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Sat 20 | |||||||||||||||||||||
| Sunrise | - | - | 6:05 | - | - | - | - | - | - | - | 6:03 | - | - | - | - | - | - | - | 6:01 | - | - | - | - | - |
| Sunset | - | - | - | - | 5:59 | - | - | - | - | - | - | - | - | 6:00 | - | - | - | - | - | - | - | 6:00 | - | - |
 | |  | |  |  |  | | | | | |  | | | | | |  | |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 2 | 1 | - | - | - |
| Temp. °C | 13 | 12 | 14 | 20 | 20 | 18 | 15 | 14 | 15 | 15 | 16 | 18 | 18 | 17 | 15 | 12 | 10 | 10 | 10 | 9 | 10 | 9 | 9 | 8 |
| Feels °C (?) | 10 | 9 | 10 | 15 | 16 | 13 | 9 | 9 | 10 | 9 | 10 | 12 | 14 | 14 | 12 | 7 | 6 | 6 | 3 | 2 | 3 | 1 | 2 | 3 |
- Map Icons:
Break
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
Calm condsitions have become offshore at Blacks Reef (light winds from the N at Mahia Automatic Weather Station 15 km from Blacks Reef). 0.9m 11s groundswell from the S with a 0.5m 10s swell from the SSE. 2 swells combining to make bigger set waves.
1 h 2 min ago
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