Surf Forecasts:
Sakawa River surf forecast from 1 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 3PM (local time) - 13ft (4.0m), 12s period, SSE swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 6PM (local time) - 15ft (4.5m), 12s period, SSE swell with 4,881 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 12AM (local time) - 1.5ft (0.5m), 9s period with S swell.
Best Forecast Surf Conditions for Sakawa River this week:
The surf forecast for Sakawa River over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 03) at 12AM. The primary swell is predicted to be 0.5m and 9s period with a secondary swell of 0.4m and 10s. Another secondary swell of 0.4m and 4s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Sakawa River in the next 16 days are 4.5m 12s and forecast to arrive on Tuesday (Sep 08) at 6PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 4s period and expected on Monday (Sep 07) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Thu 3rd Sep) | 1.5ft (0.5m) 9s |
| Best Surf | 3PM (Tue 8th Sep) | 13ft (4.0m) 12s |
| Most Powerful | 6PM (Tue 8th Sep) | 15ft (4.5m) 12s |
Table - best surf conditions forecast for Sakawa River over the next 16 days.
The Lowdown
Alright, let’s break it down. The Sakawa River is starting off quiet. Early in the forecast, the swell is tiny and the wind is mostly onshore or cross, so it’s not worth getting wet for the first few days. A bit of energy shows up on Friday the 4th, but the conditions are still pretty average.
The first real standout comes on Tuesday the 8th of September. A solid SSE swell builds to 8ft with an 11-second period, and the combined energy is strong. In the afternoon, it cranks up to a very solid 13ft from the SSE, with a 12-second period and a combined energy reading of 4530. The wind goes light and cross-offshore, which means clean, powerful waves. This is expert-only stuff – way too much for beginners. The water temp is 82°F, which is about normal for this time of year.
Wednesday the 9th still has plenty of size with a 10ft SSE swell (energy at 1729) and clean cross-offshore winds in the morning. The swell period is 10 seconds, so it’s punchy but not overly long. Again, this is for experienced surfers only.
After a quiet spell, another big pulse shows up on Tuesday the 15th of September. A 12ft SE swell with a very long 14-second period hits, and combined energy is huge at 5176. In the afternoon, the wind goes glassy – absolutely flat calm – making for some of the cleanest, most powerful waves you’ll see. The swell direction from the SE is right on the money for this break.
If you’re an expert, the absolute best days are the afternoon of Tuesday the 8th and the afternoon of Tuesday the 15th. The water is warm, the wind is perfect, and the energy is massive. For everyone else, there are a few small, mediocre days scattered in, but nothing special.
Take care of each other out there.
Rusty
Short Range ForecastHeavy rain (total 64mm), heaviest during Thu night. Warm (max 28°C on Wed morning, min 20°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 114mm), heaviest during Mon afternoon. Warm (max 26°C on Mon afternoon, min 21°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | |||||||||||||||
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) | E 10 | ESE 10 | S 9 | ESE 10 | S 8 | S 11 | S 10 | S 10 | SSW 9 | S 9 | S 8 | ESE 6 | ESE 7 | ESE 7 | ESE 8 | SE 8 | SSE 9 | SSE 9 | SSE 11 | SSE 12 | SSE 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 56 | 33 | 39 | 37 | 36 | 83 | 96 | 88 | 108 | 76 | 36 | 30 | 61 | 96 | 207 | 122 | 131 | 388 | 1279 | 4530 | 3960 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | glassy | cross | cross | glassy | cross-off | cross-off | cross-off | cross | cross-on | cross | cross-off | cross | cross-off | cross-off | on | cross | cross | cross-off | cross-off |
High Tide | 7:09PM1.49m | 8:44AM1.20m | 7:34PM1.45m | 10:22AM1.10m | 8:03PM1.40m | 8:45PM1.32m | 3:36PM1.25m | 10:48PM1.25m | 3:45PM1.33m | 1:09AM1.28m | 4:04PM1.39m | 2:29AM1.38m | |||||||||
Low Tide | 1:11PM0.72m | 2:06AM0.32m | 1:35PM0.87m | 3:03AM0.35m | 1:53PM1.01m | 4:23AM0.38m | 6:11AM0.37m | 7:15PM1.21m | 7:42AM0.29m | 8:41PM1.09m | 8:43AM0.22m | 9:20PM0.95m | |||||||||
 |  |  | | |  |  | | | | | |  | | | | |  | | | | |
 | 5:15 | — | — | 5:16 | — | — | 5:16 | — | — | 5:18 | — | — | 5:18 | — | — | 5:18 | — | — | 5:20 | — | — |
 | — | 6:09 | — | — | 6:07 | — | — | 6:07 | — | — | 6:06 | — | — | 6:04 | — | — | 6:02 | — | — | 6:00 | — |
mm | — | — | — | — | — | 23 | 11 | 18 | 12 | — | — | — | 1 | 11 | 33 | 3 | 43 | 23 | 32 | 27 | 12 |
Temp °C | 28 | 28 | 26 | 28 | 28 | 25 | 23 | 23 | 21 | 25 | 25 | 23 | 24 | 22 | 23 | 23 | 26 | 26 | 26 | 25 | 25 |
Feels °C | 31 | 31 | 30 | 31 | 31 | 29 | 26 | 25 | 23 | 25 | 25 | 23 | 22 | 21 | 24 | 23 | 27 | 27 | 30 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | E 10 | SSW 8 | S 9 | S 8 | S 8 | S 11 | S 10 | S 10 | SSW 9 | S 9 | S 8 | ESE 6 | ESE 7 | ESE 7 | ESE 8 | SE 8 | SSE 9 | SSE 9 | SSE 11 | — | SSE 11 |
| kJ | 56 | 24 | 39 | 37 | 36 | 83 | 96 | 88 | 108 | 76 | 36 | 30 | 61 | 96 | 207 | 122 | 131 | 388 | 1279 | — | 3355 |
Swell 2 Height (m) Direction Period (s) | SSW 8 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SE 6 | SE 6 | SE 7 | SE 8 | SE 7 | SE 8 | SSW 8 | SSW 8 | S 8 | S 9 | SE 11 | ESE 8 | SE 10 | NNE 4 | — | — |
| kJ | 23 | 33 | 37 | 31 | 18 | 16 | 14 | 23 | 57 | 23 | 23 | 22 | 7 | 6 | 2 | 5 | 33 | 25 | 5 | — | — |
Swell 3 Height (m) Direction Period (s) | SE 4 | SE 10 | SE 4 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | E 9 | E 9 | ESE 8 | E 8 | SE 12 | SW 10 | SW 10 | SW 9 | ESE 11 | ESE 10 | — | — | — |
| kJ | 2 | 16 | 2 | 15 | 15 | 15 | 13 | 13 | 6 | 6 | 12 | 5 | 6 | 4 | 4 | 3 | 12 | 40 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SE 4 | SE 4 | — | SW 2 | — | — | NE 2 | — | — | E 3 | NE 3 | NNE 4 | NNE 4 | NNE 4 | NNE 4 | NNE 4 | NNE 4 | NE 4 | SSE 12 | SSE 11 |
| kJ | — | 2 | 4 | — | 1 | — | — | 1 | — | — | 1 | 4 | 28 | 29 | 31 | 42 | 22 | 9 | 15 | 4530 | 3960 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 58 | 53 | 0 | 67 | 67 | 0 | 0 | 0 | 0 | 30 | 66 | 451 | 433 | 528 | 515 | 73 | 515 | 451 | 515 | 9 | 31 |
Best forecast wave conditions in Kanagawa | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
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Information about the Sakawa River Surf forecast
The above surf forecast table for Sakawa River provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Sakawa River can be found by selecting the local surf guide option on the grey menu. Our Sakawa River 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 (Sakawa River) 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 Sakawa River 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.
Sakawa River is 2 km (1 miles) from Odawara. If you plan a holiday in Kanagawa, look for hotels and other accommodation in Odawara. Odawara has rooms for a wide range of budgets as well as car hire and transport links.
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