Tahunanui bar surf break

Tahunanui bar surfForecast / Nelson – Tasman Bay / New Zealand

information circle12 Day Weather and Surf, issued 12 am Sunday 21 Dec 2025 NZDT
Forecast update in hr  min  s Forecast update imminent
Tahunanui bar surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Tahunanui bar sea temperature is
19.4° C
(Which is 3.6°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Tahunanui bar this week:

The surf forecast for Tahunanui bar over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Dec 23) at 1AM. The primary swell is predicted to be 1.6m and 6s period with a secondary swell of 0.9m and 6s. Another secondary swell of 0.2m and 12s is also forecast. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Tahunanui bar in the next 12 days are 1.5m 8s and forecast to arrive on Wednesday (Dec 24) at 1PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 8s period and expected on Tuesday (Dec 23) at 1PM.

Wave TypeTime (NZDT) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Tue 23rd Dec)5ft (1.6m) 6s
Best Surf 1AM (Tue 23rd Dec)5ft (1.6m) 6s
Most Powerful 1PM (Wed 24th Dec)5ft (1.5m) 8s

Table - best surf conditions forecast for Tahunanui bar over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 8mm), mostly falling on Mon night. Warm (max 22°C on Tue morning, min 9°C on Sat night). Wind will be generally light.

Days 3-6 Weather Summary Moderate rain (total 12mm), heaviest on Fri morning. Warm (max 21°C on Wed afternoon, min 11°C on Wed night). Mainly fresh winds.

Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Sat
27
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
2
2
0
0
0
0
0
0
0
0
0
0
1
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.2
N
0.2
N
0.5
NNE
0.2
N
0.2
N
0.9
NNW
1.6
NW
1.4
NNW
1.2
N
0.9
NNW
0.9
N
1.4
N
0.8
N
0.7
NNW
1.3
NNW
1
NNW
1.6
N
0.9
N
0.8
NNW
1
NNW
1.1
NNW
Period(s) (?)13141413135678878986566777
Wave
Graph
(?)Metric surfscale
Energy kJ (?)141510413133915521419096702779458986219664589399
Wind
(km/h)
10
SSW
5
NW
20
NNE
10
S
5
WNW
10
NNE
5
WSW
0
E
20
SW
15
SW
5
NNW
25
W
15
SW
10
NNW
10
NW
15
NNW
35
N
10
NE
15
SSW
10
NE
15
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
glassonoffcrosscross-
on
glassglasscross-
off
cross-
off
cross-
on
crosscross-
off
cross-
on
cross-
on
ononcross-
on
cross-
off
cross-
on
cross
High Tide
/ height (m)
11:04PM
3.67
11:31AM
4.01
11:44PM
3.73
12:06PM
4.01
12:24AM
3.75
12:42PM
3.98
1:05AM
3.73
1:20PM
3.93
1:47AM
3.66
2:01PM
3.88
2:32AM
3.58
2:45PM
3.82
3:20AM
3.51
3:33PM
3.76
Low Tide
/ height (m)
5:11AM
1.06
5:20PM
1.03
5:54AM
0.99
5:55PM
0.99
6:34AM
0.93
6:33PM
0.99
7:12AM
0.89
7:15PM
1.01
7:50AM
0.90
8:00PM
1.04
8:28AM
0.97
8:48PM
1.08
9:12AM
1.08
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Sat
27
Sunrise-5:48--5:50--5:50--5:50--5:50--5:52--5:52-
Sunset--8:59--8:59--9:00--9:00--9:00--9:00--9:00
clear
part cloud
part cloud
clear
part cloud
part cloud
mod rain
rain showers
clear
part cloud
part cloud
clear
clear
part cloud
part cloud
rain showers
mod rain
rain showers
clear
light rain
rain showers
Rain (mm)
------62-------192-43
Temp. °C131615131718172222171821151820161616141417
Feels °C (?)91111111415192019141816101718141116101213
  • 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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Information about the Tahunanui bar Surf forecast

The above surf forecast table for Tahunanui bar provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Tahunanui bar can be found by selecting the local surf guide option on the grey menu. Our Tahunanui bar surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Tahunanui bar) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Tahunanui bar may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

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