Surf Forecasts:
Lighthouse surf forecast from 17 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 4AM (local time) - 6ft (1.8m), 15s period, SW swell with offshore winds.
- Most powerful swell: Wednesday 19 Aug, 7AM (local time) - 6ft (1.9m), 14s period, SW swell with 1,505 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 10PM (local time) - 3.5ft (1.1m), 15s period with SW swell.
Best Forecast Surf Conditions for Lighthouse this week:
The surf forecast for Lighthouse over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 18) at 10PM. The primary swell is predicted to be 1.1m and 15s period with a secondary swell of 1.3m and 9s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Lighthouse in the next 16 days are 1.9m 14s and forecast to arrive on Wednesday (Aug 19) at 7AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 7s period and expected on Sunday (Aug 23) at 10PM.
| Wave Type | Time (+13) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Tue 18th Aug) | 3.5ft (1.1m) 15s |
| Best Surf | 4AM (Wed 19th Aug) | 6ft (1.8m) 15s |
| Most Powerful | 7AM (Wed 19th Aug) | 6ft (1.9m) 14s |
Table - best surf conditions forecast for Lighthouse over the next 16 days.
Short Range ForecastMostly dry. Warm (max 20°C on Tue afternoon, min 19°C on Tue morning). Mainly fresh winds. | Days 4-6 Weather SummarySome drizzle, heaviest during Sat afternoon. Warm (max 21°C on Fri night, min 19°C on Sat afternoon). Mainly strong winds. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
AM | PM | 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) | SW 16 | SW 16 | SW 15 | SW 14 | SW 12 | SSW 14 | SW 14 | SW 14 | SW 13 | SSW 11 | SSW 12 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 14 | SW 13 | SSW 12 | SW 19 |
Wave Graph  | |||||||||||||||||||||
 kJ | 719 | 864 | 1185 | 1304 | 1083 | 1095 | 581 | 434 | 340 | 343 | 406 | 262 | 251 | 192 | 176 | 142 | 113 | 89 | 63 | 50 | 55 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 11:46AM1.23m | 00:06AM1.31m | 12:38PM1.16m | 00:53AM1.26m | 1:31PM1.09m | 1:43AM1.21m | 2:27PM1.04m | 2:34AM1.17m | 3:23PM1.02m | 3:27AM1.16m | 4:19PM1.01m | 4:19AM1.16m | 5:10PM1.04m | ||||||||
Low Tide | 5:50PM0.28m | 6:30AM0.26m | 6:37PM0.36m | 7:22AM0.30m | 7:26PM0.42m | 8:16AM0.33m | 8:18PM0.46m | 9:11AM0.35m | 9:12PM0.49m | 10:06AM0.35m | 10:06PM0.49m | 10:56AM0.33m | 10:58PM0.47m | ||||||||
 | |  | |  |  | | |  | | | | |  | | |  | | | |  | |
 | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — | 6:58 | — | — | 6:58 | — | — |
 | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:29 | — | — | 6:29 | — | — | 6:29 | — | — | 6:29 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | 3 |
Temp °C | 19 | 20 | 20 | 20 | 19 | 20 | 20 | 19 | 20 | 20 | 20 | 21 | 21 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 21 |
Feels °C | 13 | 16 | 16 | 17 | 14 | 15 | 14 | 12 | 13 | 13 | 14 | 16 | 17 | 16 | 13 | 14 | 14 | 16 | 16 | 17 | 17 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 15 | SW 14 | SW 12 | SSW 14 | SW 14 | SW 14 | SW 13 | SSW 11 | SSW 12 | SSW 12 | SSW 12 | SW 14 | SW 13 | SW 13 | SW 13 | SW 14 | SW 13 | SSW 12 | SSW 12 |
| kJ | 719 | 864 | 1185 | 1304 | 1083 | 1095 | 581 | 434 | 340 | 343 | 406 | 246 | 198 | 192 | 176 | 142 | 113 | 89 | 63 | 50 | 47 |
Swell 2 Height (m) Direction Period (s) | E 9 | E 9 | E 8 | E 8 | E 8 | S 12 | S 12 | S 12 | SSW 11 | SW 17 | SW 16 | SW 15 | SW 14 | SSW 11 | S 11 | SSW 10 | SSW 16 | SSW 14 | SSW 13 | SW 10 | SW 19 |
| kJ | 55 | 56 | 52 | 47 | 46 | 169 | 139 | 134 | 205 | 173 | 208 | 262 | 251 | 126 | 57 | 35 | 80 | 61 | 56 | 17 | 55 |
Swell 3 Height (m) Direction Period (s) | NNW 11 | NNW 11 | NNW 11 | NNW 10 | NNW 10 | E 8 | ENE 8 | ENE 8 | SW 18 | SW 13 | S 16 | SSW 15 | SSE 12 | SSE 13 | SSE 11 | SSW 16 | SSW 10 | SSW 9 | S 9 | SW 13 | SSW 10 |
| kJ | 11 | 12 | 12 | 10 | 10 | 33 | 21 | 21 | 82 | 83 | 124 | 73 | 15 | 17 | 13 | 50 | 20 | 8 | 14 | 26 | 9 |
Wind waves Height (m) Direction Period (s) | SW 10 | SW 7 | SSW 9 | — | SE 8 | S 4 | SSE 4 | SSE 4 | SE 5 | ESE 6 | ESE 6 | ESE 6 | E 6 | E 6 | E 6 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 |
| kJ | 362 | 97 | 113 | — | 22 | 10 | 17 | 28 | 76 | 119 | 113 | 150 | 171 | 173 | 186 | 128 | 181 | 338 | 236 | 230 | 183 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 863 | 865 | 0 | 0 | 0 | 0 | 871 | 1617 | 861 | 850 | 850 | 850 | 850 | 850 | 850 | 728 | 850 | 850 | 850 | 850 | 861 |
Best forecast wave conditions in Tonga - Tongatapu | |||||||||||||||||||||
Best forecast wave conditions in Tonga | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Lighthouse surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Lighthouse Surf forecast
The above surf forecast table for Lighthouse provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Lighthouse can be found by selecting the local surf guide option on the grey menu. Our Lighthouse 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 (Lighthouse) 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 Lighthouse 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.
Lighthouse is 3 km (2 miles) from Neiafu. If you plan a holiday in Tonga - Tongatapu, look for hotels and other accommodation in Neiafu. Neiafu has rooms for a wide range of budgets as well as car hire and transport links.
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