Larsen Street surfForecast / West Coast South Island / New Zealand

information circle12 Day Weather and Surf, issued 12 pm Saturday 03 Jan 2026 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
17.3° C
(Which is slightly warmer than usual)


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 (Jan 03) at 10PM. The primary swell is predicted to be 1.0m and 9s period with a secondary swell of 0.5m and 12s. 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 1.4m 15s and forecast to arrive on Saturday (Jan 10) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 14s period and expected on Wednesday (Jan 07) at 1AM.

Wave TypeTime (NZDT) & Date Wave Height & Period
Next good surf (1 star+)10PM (Sat 3rd Jan)3.5ft (1.0m) 9s
Best Surf 1AM (Sat 10th Jan)5ft (1.5m) 12s
Most Powerful 4PM (Sat 10th Jan)4.5ft (1.4m) 15s

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 2mm), mostly falling on Sat afternoon. Very mild (max 18°C on Sat afternoon, min 13°C on Mon night). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 5mm), mostly falling on Thu night. Very mild (max 17°C on Thu morning, min 14°C on Tue night). Winds decreasing (fresh winds from the SW on Wed afternoon, calm by Thu night).

Saturday
03
Sunday
04
Monday
05
Tuesday
06
Wednesday
07
Thursday
08
Friday
09
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
0
2
2
0
2
2
0
2
0
0
0
0
0
1
0
0
1
1
0
3
Swell
Height Map
Wave Height (m) & direction (?)
1.2
W
1.1
WSW
1
WSW
0.6
WSW
0.7
WSW
0.8
WSW
0.6
WSW
0.9
WSW
0.9
WSW
0.8
WSW
0.8
WSW
0.8
WSW
0.7
WSW
0.7
WSW
0.9
WSW
0.9
WSW
0.9
WSW
0.9
WSW
0.9
WSW
1.3
WSW
1.5
W
Period(s) (?)101011171615141413131212111211101010111112
Wave
Graph
(?)Metric surfscale
Energy kJ (?)284230263237269263160351242189156156109121167155149146221422594
Wind
(km/h)
5
NNE
15
W
5
ESE
5
WNW
15
W
10
SSW
0
WNW
25
SW
15
SSW
15
SW
30
SW
15
SSW
25
SW
35
SW
15
SSW
20
SW
25
WSW
10
SSW
10
SW
25
WSW
10
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
on
glassglasscross-
on
cross-
off
glasscrosscross-
off
crosscrosscross-
off
crosscrosscross-
off
crosscrosscross-
off
crosscrosscross-
off
High Tide
/ height (m)
11:10AM
2.99
11:40PM
2.95
12:01PM
3.07
12:29AM
2.96
12:50PM
3.09
1:17AM
2.92
1:37PM
3.05
2:03AM
2.84
2:23PM
2.94
2:49AM
2.71
3:08PM
2.79
3:35AM
2.57
3:54PM
2.61
Low Tide
/ height (m)
5:26PM
0.05
5:48AM
0.10
6:18PM
-0.01
6:38AM
0.08
7:07PM
-0.01
7:25AM
0.10
7:54PM
0.05
8:11AM
0.18
8:41PM
0.16
8:57AM
0.30
9:26PM
0.31
9:43AM
0.45
10:13PM
0.47
Saturday
03
Sunday
04
Monday
05
Tuesday
06
Wednesday
07
Thursday
08
Friday
09
Sunrise6:03--6:03--6:05--6:05--6:07--6:07--6:09--
Sunset-9:10--9:10--9:10--9:10--9:10--9:10--9:10-
part cloud
rain showers
part cloud
rain showers
part cloud
part cloud
part cloud
cloud
part cloud
clear
clear
clear
part cloud
clear
part cloud
part cloud
part cloud
light rain
part cloud
part cloud
light rain
Rain (mm)
-1-1-------------5--2
Temp. °C171817171716161615161615161616171717181715
Feels °C (?)161617171515151312121110121014141418161312
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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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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