· Taiwan time · Beginner criteria (default)
Display settingsm · m/s
Compare the estimated breaking-wave face with a roughly 170 cm adult.
Numeric wave heights are model significant wave height (Hs). The body scale estimates breaking-wave face height. Display settings do not change the assessment.
Tide m · Temperature °C · Distance km · Period s
Changes apply immediately and are remembered in this browser.
Taitung
Yiwan conditions on this date
- Wave Hs
- 1.6–2.0 m
- Period
- 7 s
- Wind
- Not offshore
- Tide
- Rising · High 05:16
How to read the two heights: Hs is the model's significant wave height; metres and feet are two units for that same Hs height (1 ft = 0.3048 m). Breaking-wave face height is an engineering estimate that applies a period-aware nearshore shoaling factor to Hs, so it is usually larger. It is not a unit conversion or an on-site measurement.
Dangerous on this date: Waves too big. Stay out of the water.
This hour’s forecast
17:00 · Swell E
Why we say this
Verdict: dangerous, stay out of the water. Waves too big.
- DangerWaves too big
The forecast waves are over the safe ceiling for your level.
Direction
Wind blows onto the shore, so the face gets messy.
This spot works best on NE, ENE, E swell.
Cross-shore wind on this date, but the swell lines up.
Spot specs
- Type
- River mouth / Point break
- Seabed
- Rock
- Best tide
- Mid
- Level
- Intermediate +
Location
Navigate in Google MapsThe compass on the map shows the selected date’s swell and wind directions (solid arrows) and this spot's ideal swell and wind windows (dashed arcs). See the Direction card above for the interpretation.
Next 7 days
Hourly forecast (Sun)
Shared time axis · shaded band is the best window to paddle out
All four charts share one time axis · significant wave height Hs (m) · period (s) · wind (m/s) · tide (m) · arrows show where it comes from · the band marks the best window · tide uses CWA (unaffected by model) · slide or touch to read each hour.
Tide
海釣長濱界橋 station · CWA
Hourly raw values
Hourly forecast (Sun) · Daylight 5:00–18:00 is the surfable window
| Time | 00 | 02 | 04 | 06 | 08 | 10 | 12 | 14 | 16 | 18 | 20 | 22 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wave Hsm | 2.1 | 2.1 | 2.1 | 2.0 | 1.9 | 1.9 | 1.8 | 1.7 | 1.7 | 1.6 | 1.6 | 1.5 |
| Periods | 6.6 | 6.6 | 6.6 | 6.8 | 6.8 | 6.8 | 6.8 | 6.7 | 6.6 | 6.6 | 6.5 | 6.5 |
| Swell dir | 76° | 77° | 76° | 76° | 76° | 76° | 77° | 79° | 79° | 80° | 81° | 81° |
| Windm/s | 3.1 | 3.2 | 2.5 | 2.2 | 2.6 | 3.8 | 3.9 | 4.0 | 3.5 | 2.1 | 2.6 | 2.1 |
| Wind dir | 358° | 342° | 346° | 3° | 337° | 19° | 43° | 43° | 39° | 1° | 342° | 327° |
| Gustm/s | 13.7 | 11.9 | 10.0 | 10.0 | 9.7 | 13.0 | 13.6 | 13.3 | 13.1 | 10.3 | 10.9 | 10.7 |
| Weather | Rain | Rain | Cloudy | Cloudy | Clear | Cloudy | Cloudy | Cloudy | Cloudy | Clear | Clear | Clear |
| Tidem | -0.5 | -0.1 | 0.3 | 0.4 | 0.1 | -0.2 | -0.1 | 0.2 | 0.6 | 0.5 | 0.0 | -0.5 |
| Air°C | 22 | 21 | 22 | 22 | 24 | 25 | 26 | 26 | 25 | 23 | 23 | 22 |
| Sea°C | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
| UV | 0 | 0 | 0 | 0 | 2 | 5 | 7 | 5 | 2 | 0 | 0 | 0 |
Significant wave height Hs (m) · period (s) · wind & gust (m/s) · arrows show where it comes from (green = suits, dim = unfavorable) · relative tide level (m) · air / sea temp (°C) · UV. Color is only a hint; numbers and arrows remain. Swipe to see all hours on mobile.
About Yiwan
Yiwan is a southeast-facing rivermouth point break in Taitung over a rocky bottom, peeling left. It works best on NE, ENE, and E swells with W or WSW offshore winds around mid tide. Rated intermediate, build some experience on a sandy beach break first.
Frequently asked questions
- Is Yiwan good for beginners?
- Not really. Yiwan is an intermediate spot, so it's better once you have some experience. Newer surfers should start somewhere easier first, then check this page's daily conditions score before deciding.
- When does Yiwan work best?
- Yiwan is usually cleanest on a NE/ENE/E swell and a W/WSW wind. How good it actually gets still comes down to the day's wave height and period, so go by the hourly forecast on this page.
- How do I get to Yiwan?
- Yiwan sits on the coast in Taitung, Taiwan. Open Google Maps navigation straight from the spot map on this page to get there.
