Surf Forecasts:
Larsen Street surf forecast from 16 Aug 2026:
- Best quality surf: Monday 24 Aug, 12AM (local time) - 8ft (2.5m), 15s period, W swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 6AM (local time) - 13ft (4.0m), 15s period, W swell with 7,474 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 6AM (local time) - 5ft (1.6m), 15s period with WSW swell.
Best Forecast Surf Conditions for Larsen Street this week:
The surf forecast for Larsen Street over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 17) at 6AM. The primary swell is predicted to be 1.6m and 15s period with a secondary swell of 1.2m and 10s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Larsen Street in the next 16 days are 4.0m 15s and forecast to arrive on Monday (Aug 24) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 4s period and expected on Thursday (Aug 20) at 3AM.
| Wave Type | Time (NZST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Mon 17th Aug) | 5ft (1.6m) 15s |
| Best Surf | 12AM (Mon 24th Aug) | 8ft (2.5m) 15s |
| Most Powerful | 6AM (Mon 24th Aug) | 13ft (4.0m) 15s |
Table - best surf conditions forecast for Larsen Street over the next 16 days.
Short Range ForecastMostly dry. Very mild (max 11°C on Tue afternoon, min 5°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Fri night. Very mild (max 13°C on Sat morning, min 9°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | ||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||
Wave Height (m) Direction Period (s) | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 13 | WSW 10 | WSW 10 | WSW 16 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 15 | WSW 14 | WSW 14 | WSW 13 | W 10 | W 8 |
Wave Graph | |||||||||||||||||||
2294 | 886 | 1143 | 900 | 461 | 577 | 585 | 906 | 1631 | 1158 | 838 | 589 | 563 | 551 | 437 | 293 | 282 | 618 | 461 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | glassy | off | off | cross | glassy | cross-off | cross | cross-off | cross-off | glassy | cross-off | cross-off | glassy | glassy | cross-on | cross-on | on |
High Tide | 1:15AM2.91m | 1:37PM2.75m | 1:55AM2.72m | 2:18PM2.59m | 2:38AM2.51m | 3:02PM2.41m | 3:26AM2.32m | 3:54PM2.26m | 4:24AM2.16m | 4:59PM2.15m | 5:37AM2.08m | 6:14PM2.12m | |||||||
Low Tide | 7:30AM0.18m | 7:47PM0.30m | 8:11AM0.37m | 8:31PM0.49m | 8:54AM0.58m | 9:18PM0.69m | 9:42AM0.77m | 10:13PM0.86m | 10:41AM0.92m | 11:20PM0.96m | 11:52AM0.99m | 00:34AM0.96m | |||||||
— | 7:22 | — | — | 7:20 | — | — | 7:20 | — | — | 7:18 | — | — | 7:16 | — | — | 7:15 | — | — | |
— | — | 5:52 | — | — | 5:53 | — | — | 5:54 | — | — | 5:55 | — | — | 5:57 | — | — | 5:58 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 3 | 1 | 7 |
Temp °C | 8 | 7 | 9 | 7 | 9 | 11 | 11 | 10 | 11 | 11 | 11 | 11 | 10 | 11 | 11 | 12 | 13 | 13 | 13 |
Feels °C | 2 | 4 | 5 | 3 | 6 | 6 | 8 | 6 | 9 | 9 | 9 | 10 | 8 | 9 | 9 | 9 | 11 | 10 | 10 |
Swell 1 Height (m) Direction Period (s) | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 9 | WSW 10 | WSW 10 | WSW 10 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 15 | WSW 14 | WSW 14 | WNW 7 | W 10 | NNW 7 |
2294 | 886 | 1143 | 900 | 302 | 577 | 585 | 450 | 1631 | 1158 | 838 | 589 | 563 | 551 | 437 | 293 | 206 | 618 | 78 | |
Swell 2 Height (m) Direction Period (s) | — | WSW 10 | — | — | WSW 13 | WSW 13 | WSW 13 | WSW 16 | — | — | N 4 | N 4 | — | — | — | W 4 | WSW 13 | W 13 | W 19 |
— | 294 | — | — | 461 | 317 | 317 | 906 | — | — | 3 | 1 | — | — | — | 8 | 282 | 92 | 267 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | W 18 | — | WSW 18 | — | — | — | — | — | — | — | — | W 20 | — | WSW 21 | W 13 |
— | — | — | — | 56 | — | 243 | — | — | — | — | — | — | — | — | 7 | — | 141 | 82 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 8 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 461 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 33 | 0 | 0 | 17 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 177 | 187 | 155 |
Best forecast wave conditions in West Coast South Island | |||||||||||||||||||
Best forecast wave conditions in New Zealand | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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 16 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.











