ShouldISurf
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· Taiwan time · Beginner criteria (default)

Display settingsm · m/s
Wave height
Wind and gusts

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

Dangerous
Estimated face: about Well overhead2.2–2.7 mHs 2.0 m
Best windowNo window meets the criteria 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.

Intermediate +Spot profile uses general settings

Dangerous on this date: Waves too big. Stay out of the water.

This hour’s forecast

17:00 · Swell E

Wave Hs
1.7 m
Period
6.6 s
Wind
3.1 m/s NNE
Gust
11.5 m/s
Tide
0.7 mFalling
Air
25°C
Sea
28°C
UV
0

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.

Spot specs

Type
River mouth / Point break
Seabed
Rock
Best tide
Mid
Level
Intermediate +

The 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

Weather model
Wave Hsm
1.5
Periods
6.6
Windm/s
2.1
Tidem
-0.7
Time
0003060912151821
Swell dir
Wind dir

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

Hourly swell, wind, weather, tide, air/sea temperature, and UV for the selected day
Time000204060810121416182022
Wave Hsm2.12.12.12.01.91.91.81.71.71.61.61.5
Periods6.66.66.66.86.86.86.86.76.66.66.56.5
Swell dir76°77°76°76°76°76°77°79°79°80°81°81°
Windm/s3.13.22.52.22.63.83.94.03.52.12.62.1
Wind dir358°342°346°3°337°19°43°43°39°1°342°327°
Gustm/s13.711.910.010.09.713.013.613.313.110.310.910.7
WeatherRainRainCloudyCloudyClearCloudyCloudyCloudyCloudyClearClearClear
Tidem-0.5-0.10.30.40.1-0.2-0.10.20.60.50.0-0.5
Air°C222122222425262625232322
Sea°C282828282828282828282828
UV000025752000

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.

See all Taitung surf spots →