Larsen Street surfForecast / West Coast South Island / New Zealand

information circle12 Day Weather and Surf, issued 6 am Saturday 06 Dec 2025 NZDT
Forecast update in hr  min  s Forecast update imminent
Larsen Street surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Larsen Street sea temperature is
16.6° C
(Which is 1.3°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Larsen Street this week:

The surf forecast for Larsen Street over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Dec 06) at 10PM. The primary swell is predicted to be 2.0m and 11s period with a secondary swell of 0.4m and 15s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Larsen Street in the next 12 days are 3.0m 12s and forecast to arrive on Monday (Dec 08) 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 0.5m 16s period and expected on Sunday (Dec 07) at 4AM.

Wave TypeTime (NZDT) & Date Wave Height & Period
Next good surf (1 star+)10PM (Sat 6th Dec)6.5ft (2.0m) 11s
Best Surf 1PM (Mon 8th Dec)10ft (3.0m) 12s
Most Powerful 1PM (Mon 8th Dec)10ft (3.0m) 12s

Table - best surf conditions forecast for Larsen Street over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 9mm), mostly falling on Mon morning. Very mild (max 17°C on Sat afternoon, min 14°C on Mon morning). Winds decreasing (fresh winds from the NNE on Sun night, calm by Mon night).

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Thu night. Very mild (max 18°C on Tue afternoon, min 13°C on Thu night). Winds increasing (calm on Tue night, strong winds from the SW by Thu afternoon).

Saturday
06
Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thursday
11
Friday
12
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
2
1
3
2
0
0
2
4
4
2
2
2
3
1
2
0
0
0
0
0
4
Swell
Height Map
Wave Height (m) & direction (?)
1.8
W
1.9
W
2
W
1.8
W
1.7
W
1.9
W
2.3
WNW
2.4
WNW
1.7
WNW
1.4
WSW
1.3
WSW
1.1
W
1.4
WSW
1.6
W
1.5
W
1.5
W
1.6
WSW
1.6
WSW
1.4
WSW
2.5
WSW
2.5
WSW
Period(s) (?)101013121211111111121211141312121413131311
Wave
Graph
(?)Metric surfscale
Energy kJ (?)661753135996483087511861436700579511319811878683683106094369020391593
Wind
(km/h)
10
WNW
10
N
10
NNE
15
NE
20
NNE
30
NNE
20
SW
10
ENE
5
ESE
15
NNE
10
NE
5
NE
5
N
20
WSW
20
SSW
25
SW
45
SW
35
SW
40
SW
40
SW
10
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
on
crosscrosscross-
on
crosscrosscross-
off
glasscrosscrossglassglasscrosscross-
off
crosscrosscrosscrosscrosscross-
off
High Tide
/ height (m)
12:10PM
3.11
12:39AM
3.01
1:01PM
3.08
1:31AM
2.91
1:52PM
2.99
2:23AM
2.78
2:45PM
2.86
3:17AM
2.62
3:40PM
2.70
4:13AM
2.47
4:37PM
2.55
5:12AM
2.36
5:36PM
2.42
Low Tide
/ height (m)
6:27PM
-0.04
6:49AM
0.07
7:19PM
0.01
7:40AM
0.16
8:12PM
0.12
8:32AM
0.28
9:06PM
0.26
9:25AM
0.41
10:01PM
0.40
10:21AM
0.55
10:58PM
0.53
11:20AM
0.66
11:56PM
0.63
Saturday
06
Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thursday
11
Friday
12
Sunrise5:52--5:52--5:52--5:52--5:52--5:52--5:52--
Sunset-8:55--8:57--8:58--8:59--9:00--9:00--9:00-
light rain
part cloud
part cloud
part cloud
clear
rain showers
light rain
light rain
light rain
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
rain showers
rain showers
part cloud
rain showers
Rain (mm)
2----1321--------21-2
Temp. °C161717171717141515171817171715161514141414
Feels °C (?)1617181515141114161618181815121266569
  • 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 Larsen Street Surf forecast

The above surf forecast table for Larsen Street provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Larsen Street can be found by selecting the local surf guide option on the grey menu. Our Larsen Street 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 (Larsen Street) 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 Larsen Street 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.

Are you planning a holiday in West Coast South Island? If you are looking for accommodation near Larsen Street, camping, hotels and holiday cottages in West Coast South Island, consider staying in Nelson which is 157 km (98 miles) away.

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