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Onekaka surfForecast / Nelson – Tasman Bay / New Zealand
48hr Weather and Surf, issued 5 am Saturday 02 Aug 2025 NZSTForecast update in hr min s Forecast update imminent
Onekaka surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Onekaka sea temperature is
11.8° C
(Which is 1.3°C colder than average for this time of year)| Time (NZST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (02 Aug) | 0.5ft (0.2m) | 4s |
| Afternoon (02 Aug) | - | - |
| Evening (02 Aug) | 2ft (0.6m) | 4s |
Table - waves today at Onekaka. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 02 | Sunday 03 | Monday 04 | Tue 05 | |||||||||||||||||||||
| 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) (?) | 4 | 4 | 4 | 18 | 17 | 16 | 4 | 5 | 6 | 6 | 5 | 4 | 4 | 4 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
Wave (?)Graph  | ||||||||||||||||||||||||
| Energy (?) | 9 | 3 | 1 | 0 | 0 | 0 | 9 | 61 | 75 | 108 | 33 | 5 | 9 | 9 | 30 | 61 | 34 | 9 | 10 | 12 | 10 | 12 | 36 | 9 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | glass | glass | glass | glass | glass | cross- on | cross- on | cross- on | cross- on | glass | on | glass | glass | glass | off | cross- off | glass | glass | on | cross- on | glass | off | cross- off |
High Tide / height (m) | 2:32AM 3.60 | 2:52PM 3.50 | 3:24AM 3.37 | 3:46PM 3.34 | 4:27AM 3.21 | 5:03PM 3.25 | ||||||||||||||||||
Low Tide / height (m) | 8:37AM 1.19 | 8:54PM 1.47 | 9:30AM 1.36 | 10:18PM 1.63 | 10:32AM 1.47 | 11:37PM 1.60 | ||||||||||||||||||
Saturday 02 | Sunday 03 | Monday 04 | Tue 05 | |||||||||||||||||||||
| Sunrise | - | - | 7:35 | - | - | - | - | - | - | - | 7:33 | - | - | - | - | - | - | - | 7:31 | - | - | - | - | - |
| Sunset | - | - | - | - | 5:36 | - | - | - | - | - | - | - | 5:37 | - | - | - | - | - | - | - | 5:37 | - | - | - |
 |  |  | | | | | | | | |  | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 9 | 10 | 9 | 12 | 12 | 10 | 10 | 9 | 8 | 8 | 8 | 9 | 9 | 7 | 7 | 6 | 5 | 4 | 5 | 8 | 8 | 6 | 6 | 6 |
| Feels °C (?) | 7 | 9 | 7 | 11 | 11 | 8 | 7 | 4 | 4 | 5 | 6 | 7 | 7 | 6 | 5 | 4 | 2 | 1 | 3 | 5 | 5 | 4 | 3 | 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 Nelson - Tasman Bay
Continuing clean conditions at Onekaka (light winds from the SSW at FarewellSpitAws 33 km from Onekaka). 0.2m 4s local chop from the E to make surfable waves.
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33 km away, 1 h 5 min ago
9 km/h
SSW
0.0
11.8
Air / Water (°C)
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