Iyo tides today
- Tide now 8.0 ft ↑ rising · high 11:09 am (11.9 ft)
- Best time to fish 4:50–5:50 pm average day · 6/10
- Beach day 9:00 am–2:00 pm Fair beach day · 6/10
- Waves · water 0.4 ft · 73 °F smooth · 2.5 s from the north-northeast
- Wind · air 2 mph · 62 °F from the ENE, gusts 10 · mainly clear
- Sun 6:25 am–5:20 pm 10 h 55 min of daylight
- Moon 88% · 7:34 pm waning gibbous · rises at 7:34 pm
- Best time to dive 10:10 am–12:10 pm great day · 10/10
Today in Iyo there are high tides at 11:09 am (11.9 ft) and 10:34 pm (10.2 ft) and low tides at 4:21 am and 4:58 pm. Tide coefficient 89. Right now the tide is rising toward the high tide at 11:09 am. The sun rises at 6:25 am and sets at 5:20 pm: 10 h 55 min of daylight. The moon is 88% illuminated (waning gibbous) and rises at 7:34 pm. Major solunar periods run from 1:11 am to 3:11 am and from 1:43 pm to 3:43 pm. The next spring tides arrive from October 27 to 29. The sea is smooth, with 0.4 ft waves. There's a light air from the east-northeast (2 mph). Mainly clear, 62 °F.
Fishing in Iyo today
Best time to fish
Solunar activity today: medium- Low tide at 4:58 pm
- Sunset at 5:20 pm, golden hour from 4:46 pm
- Steady pressure (30.15 inHg), almost no wind and calm sea (0.1 ft waves)
- Waning gibbous: a bit more activity than at the quarters
- Highest tide coefficient today: 89 (average tides)
Your day at a glance
The best window, 4:50 pm to 5:50 pm, combines the 4:58 pm low tide and sunset. Also good from 11:30 am to 12:10 pm, with the 11:09 am high tide and a light onshore breeze. Also good from 9:30 pm to 11:30 pm, with the 10:34 pm high tide and falling pressure.
Species with the most records nearby: striped mullet, red seabream, blackhead seabream and John Dory. What you can catch
Beach day in Iyo
Is it a beach day?
2 good hours- Mostly sunny
- Feels like 71 °F: mild
- Onshore breeze (5 mph)
- Calm for swimming: 0.3 ft waves
- UV 5 (moderate): SPF 30 sunscreen
- Water at 74 °F (nice)
Today, hour by hour
- Swimming Calm · 0.3 ft
0.3 ft waves: calm for swimming. Low rip current risk. Always follow the lifeguard's flags.
- Water 74 °F
Nice for swimming.
- Sun & sunscreen UV 5 · SPF 30
Max UV 5 (moderate): SPF 30 sunscreen, reapplied every 2 hours.
- Wind 6 mph
Cross-shore breeze (6 mph).
- Tide & sand 4:58 pm
Low tide at 4:21 am and 4:58 pm: that's when there's the most sand. High tide at 11:09 am and 10:34 pm.
The best window, 9:00 am to 2:00 pm, brings sunshine, little wind, a calm sea and water at 74 °F.
We don't have data on jellyfish, sargassum or beach closures: ask the lifeguard or check with the local beach authority. How it works · The next 7 days
Beaches near Iyo
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- 塩屋海岸 3.5 mi · N
Named beaches within 6.2 mi, nearest first. Amenities from OpenStreetMap: some may be missing or out of date. View on OpenStreetMap · Add or fix on OpenStreetMap
Beaches and amenities: © OpenStreetMap contributors (ODbL).
Webcams near Iyo
Webcams provided by windy.com — add a webcam
Tides in Iyo
Today's high and low tides
- ▼ Low tide 4:21 am 0.2 ft
- ▲ Next high tide 11:09 am 11.9 ft · coef. 89
- ▼ Low tide 4:58 pm 4.3 ft
- ▲ High tide 10:34 pm 10.2 ft · coef. 85
↑ Rising The tide is rising. 2 h 43 min to high tide at 11:09 am.
Tide coefficient 89 for the 11:09 am high tide and 85 for the 10:34 pm high tide. Average coefficient. The water rises and falls 11.6 ft between the highest high and the lowest low: a large range for this place. 70 is an average tide here; 90 and above means spring tides; below 45, neap tides. What is the tide coefficient?
2026 extremes: the highest tide of the year is on July 15 (12.4 ft) and the lowest, on December 25 (-0.9 ft).
Mixed: two high and two low tides a day, but of quite different heights.
Heights above NLLW. Astronomical prediction: wind and air pressure can raise or lower the water by a few inches, and more in a storm. Not for navigation. NLLW
Tide coefficient and range in October
The biggest tides of the month came from October 26 to 27 (coefficient 100, 11.7 ft range). The smallest, on October 19 (coefficient 27, 4.8 ft).
Tide and solunar table · this week
| Day | Sun | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Coef. | Moon | Major periods | Activity |
|---|---|---|---|---|---|---|---|---|---|
| Today, Thu 29 | 6:25 am · 5:20 pm | Low tide 4:21 am · 0.2 ft | High tide 11:09 am · 11.9 ft | Low tide 4:58 pm · 4.3 ft | High tide 10:34 pm · 10.2 ft | Coef. 89 | 88% | Major periods 1:11 am · 1:43 pm | Medium |
| Fri 30 | 6:26 am · 5:19 pm | Low tide 5:05 am · 0.6 ft | High tide 12:00 pm · 11.3 ft | Low tide 5:47 pm · 4.9 ft | High tide 11:17 pm · 9.6 ft | Coef. 78 | 80% | Major periods 2:15 am · 2:48 pm | Medium |
| Sat 31 | 6:27 am · 5:18 pm | Low tide 5:56 am · 1.3 ft | High tide 12:58 pm · 10.6 ft | Low tide 6:47 pm · 5.5 ft | — | Coef. 64 | 69% | Major periods 3:19 am · 3:50 pm | Medium |
| Sun 1 | 6:28 am · 5:17 pm | High tide 12:11 am · 8.9 ft | Low tide 6:57 am · 2.1 ft | High tide 2:09 pm · 10.0 ft | Low tide 8:11 pm · 5.8 ft | Coef. 58 | 58% | Major periods 4:20 am · 4:48 pm | Medium |
| Mon 2 | 6:29 am · 5:16 pm | High tide 1:28 am · 8.2 ft | Low tide 8:15 am · 2.9 ft | High tide 3:32 pm · 9.7 ft | Low tide 10:00 pm · 5.6 ft | Coef. 46 | Last quarter | Major periods 5:16 am · 5:42 pm | Medium |
| Tue 3 | 6:30 am · 5:15 pm | High tide 3:19 am · 7.9 ft | Low tide 9:47 am · 3.4 ft | High tide 4:52 pm · 9.7 ft | Low tide 11:23 pm · 4.7 ft | Coef. 46 | 36% | Major periods 6:07 am · 6:31 pm | Medium |
| Wed 4 | 6:31 am · 5:15 pm | High tide 5:06 am · 8.4 ft | Low tide 11:13 am · 3.5 ft | High tide 5:53 pm · 9.9 ft | — | Coef. 57 | 26% | Major periods 6:54 am · 7:17 pm | Medium |
▲ high tide · ▼ low tide · heights above NLLW. Major periods: start time; they last 2 hours. Activity: based on the moon phase and the solunar periods.
Where this tide comes from
Iyo has no station of its own, so we use the tide at Matsuyama (TICON-4), 7.5 mi away. On the open coast the difference is usually a few minutes and inches; inside estuaries, rivers and enclosed bays it can be much larger.
Station data attribution: Slackwater database (https://github.com/openwatersio/slackwater-database). Source: Hart-Davis, M., Dettmering, D., Seitz, F. (2025), TICON-4: TIdal CONstants based on GESLA-4 sea-level records, SEANOE, https://doi.org/10.17882/109129. Licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Modified: see https://github.com/openwatersio/slackwater-database#modifications-to-source-data
The sea at Iyo
Sea stateSea state: smooth
The waves you may find
- Most commonMost common0.2 ft
- Significant0.4 ft
- Highest expectedHighest0.8 ft
One wave in seven is higher than the significant height, and about 3 times a day one reaches 0.8 ft. Before heading out, expect waves of up to 0.8 ft.
Wind on the coast and offshore
Offshore wind. The coast faces west and the wind blows from land out to sea: calm shore and clean waves, but watch the drift out to sea.
Wave height, next 7 daysWaves, next 7 days
Waves build over the next few days. The biggest waves arrive on Monday 2: 2.2 ft with a period of 4 s, from the south-southwest (slight).
Water temperature
Water temperature →The satellite measured 2.9 °F more 2 days ago than the model gives now: the water is probably warmer than the forecast says.
Water temperature changes how fish behave: in very cold or very warm water they feed less. The water cools over the next few days: about 71.9 °F by Wednesday 4.
Water warmer than normal for late October (+2.2 °F).
Satellite: NASA MUR (JPL MUR MEaSUREs, PO.DAAC), doi:10.5067/GHGMR-4FJ04. Sources and licenses
Water temperature →Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 8:25 am (local time).
Diving in Iyo today
Diving and snorkeling today
Likely visibility: good- Slack water around high tide (11:09 am): little current from 10:50 am to 11:30 am
- 0.3 ft swell at 2 s from the northeast: barely any surge
- Almost no wind
- 0.3 mph current toward the northeast, weak (model)
- Sun high: more light underwater
- Slack water today: low tide 4:21 am (4:00–4:40 am), high tide 11:09 am (10:50–11:30 am), low tide 4:58 pm (4:30–5:30 pm) and high tide 10:34 pm (10:10–11:00 pm)
- Likely visibility: good. The sea has been calm and there's been little rain. Based on the last 24 hours of data.
- Water at 73.4 °F: a 3 mm wetsuit.
- Snorkeling: good, calm sea and light wind.
- Night dive: dark from 5:46 pm. Waning gibbous (88%), rising at 7:34 pm: a bright night.
Your diving day at a glance
The best window, 10:10 am to 12:10 pm, combines slack water at high tide, little swell, light wind, weak current and the sun high. Also good from 4:10 pm to 5:20 pm, with slack water at low tide, little swell, light wind and weak current.
Slack water comes from the tide: in inlets, channels and between islands the water can keep running for an hour or two after. Ask the local dive shop.
Never dive alone and check with the local dive shop: this rating is a guide, not a substitute for a professional.
Dive sites, wrecks and dive shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
Within 12 mi. Some may be missing or closed; marine reserves usually need a permit. Open the map on OpenStreetMap · Missing one? Add it to OpenStreetMap
Sites: © OpenStreetMap contributors (ODbL).
Weather in Iyo
Now in Iyo
- Low / high
- 46 / 70 °F
- Rain
- 0.01 in · 40%
- Clouds
- 33%
- Humidity
- 59%
- Dew pointDew point
- 47 °F
- Visibility
- 15 mi
- UV indexUV
- 2 · low
- Air qualityAir
- Fair · 27
- Saharan dust
- No
Pressure and fishing
- ↗ RisingRising Anglers say fish bite less for a while
- → SteadySteady · now Anglers expect normal activity
- ↘ FallingFalling Anglers say fish feed more before the change
Steady now (+0.02 inHg in 3 hours). Over the next 48 hours: −0.12 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.
Today, hour by hourHour by hour
Bars: mean wind. Dashed line: gusts. Arrows point where the wind blows to.
| Time | 12:00 am | 3:00 am | 6:00 am | 9:00 am | 12:00 pm | 3:00 pm | 6:00 pm | 9:00 pm |
|---|---|---|---|---|---|---|---|---|
| Sky | Clear | Clear | Clear | Mainly clear | Mainly clear | Overcast | Overcast | Overcast |
| Temperature | 50° | 48° | 47° | 65° | 70° | 68° | 66° | 65° |
| Wind (mph) | 5 ESE | 6 ESE | 3 ESE | 2 NE | 4 WNW | 6 NNW | 5 SE | 4 SSE |
| Gusts | 10 | 12 | 11 | 10 | 14 | 15 | 11 | 17 |
| Waves | 0.6 ft | 0.5 ft | 0.5 ft | 0.3 ft | 0.3 ft | 0.1 ft | 0.1 ft | 0.4 ft |
| Rain | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in |
- 9:00 am 65° 2 NE 0.3 ft
- 12:00 pm 70° 4 WNW 0.3 ft
- 3:00 pm 68° 6 NNW 0.1 ft
- 6:00 pm 66° 5 SE 0.1 ft
- 9:00 pm 65° 4 SSE 0.4 ft
- 12:00 am 65° 7 S 1.0 ft
- 3:00 am 65° 7 SSE 1.0 ft
- 6:00 am 64° 6 SE 0.7 ft
Next 14 daysComing days
| Day | Sky | Low / high | Max wind | Max wave | High tides |
|---|---|---|---|---|---|
| Today · 29 | 46 / 70 °F | 6 mph SE | 0.8 ft | 11:09 am · 10:34 pm | |
| Fri 30 | 63 / 71 °F | 7 mph SW | 1.3 ft | 12:00 pm · 11:17 pm | |
| Sat 31 | 56 / 70 °F | 10 mph WNW | 1.6 ft | 12:58 pm | |
| Sun 1 | 49 / 67 °F | 4 mph ESE | 0.9 ft | 12:11 am · 2:09 pm | |
| Mon 2 | 56 / 73 °F | 16 mph S | 2.2 ft | 1:28 am · 3:32 pm | |
| Tue 3 | 55 / 67 °F | 7 mph NNE | 0.9 ft | 3:19 am · 4:52 pm | |
| Wed 4 | 55 / 64 °F | 5 mph NE | 1.1 ft | 5:06 am · 5:53 pm | |
| Thu 5 | 55 / 71 °F | 4 mph SE | 0.7 ft | 6:19 am · 6:39 pm | |
| Fri 6 | 52 / 66 °F | 9 mph NNW | 0.8 ft | 7:12 am · 7:16 pm | |
| Sat 7 | 51 / 60 °F | 9 mph NE | 3.1 ft | 7:56 am · 7:46 pm | |
| Sun 8 | 53 / 63 °F | 6 mph WNW | 2.6 ft | 8:34 am · 8:14 pm | |
| Mon 9 | 52 / 60 °F | 6 mph N | 2.8 ft | 9:10 am · 8:41 pm | |
| Tue 10 | 51 / 61 °F | 7 mph NW | 2.8 ft | 9:45 am · 9:08 pm | |
| Wed 11 | 46 / 61 °F | 5 mph NW | 2.4 ft | 10:20 am · 9:36 pm |
- Fri 30 Rain 63° / 71° 1.3 ft
- Sat 31 Mainly clear 56° / 70° 1.6 ft
- Sun 1 Overcast 49° / 67° 0.9 ft
- Mon 2 Light rain 56° / 73° 2.2 ft
- Tue 3 Overcast 55° / 67° 0.9 ft
- Wed 4 Overcast 55° / 64° 1.1 ft
- Thu 5 Overcast 55° / 71° 0.7 ft
Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore. High tides: our own tide calculation.
- The models Partly agree · medium confidence: unsure about rain today. See the models →
- Outlook Next few weeks, compared with normal: a bit warmer and normal rain. See the outlook →
- Normal Today, normal highs for late October (70 °F). Climate by month →
Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 8:25 am (local time).
The sun in Iyo
Sunrise and sunset
- First light 5:30 am
- Full dark 6:15 pm
- Civil dawn 6:00 am
- Civil dusk 5:46 pm
- Solar noon 11:53 am (43° high)
- Daylight 10 h 55 min (−2 min)
- Evening golden hour 4:46 pm
- Full dark 6:15 pm
Golden hour and the day-night map
Today the sun is 92,344,478 mi away and looks 32′ 11″ across.
The moon in Iyo
Moon phase and position
Today the moon is 226,480 mi away and looks 32′ 46″ across.
Solunar periods
Today's activity: medium- 1:11–3:11 am Major · the moon passes overhead · high activity
- 1:43–3:43 pm Major · the moon passes underfoot · high activity
- 9:20–10:20 am Minor · moonset · medium activity
- 7:04–8:04 pm Minor · moonrise · medium activity
According to solunar theory, fish feed more when the moon passes overhead or underfoot (major periods, about 2 h) and when it rises or sets (minor periods, 1 h). It works best around new and full moon.
Upcoming moon phases
2026 moon calendar →- Last quarter Mon, Nov 2 · 5:29 amNov 2 in 4 days
- New moon Mon, Nov 9 · 4:03 pmNov 9 in 11 days
- First quarter Tue, Nov 17 · 8:48 pmNov 17 in 19 days
- Full moon Tue, Nov 24 · 11:54 pmNov 24 in 26 days
Perigee on October 29, 226,426 mi away, coinciding with the spring tides from October 27 to 29: they will be stronger than usual.
Where to fish in Iyo
Piers, ramps and tackle shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Jetty 4.6 mi
- Jetty 7.3 mi
- Jetty 7.9 mi
- Jetty 8.5 mi
- Jetty 8.7 mi
- Jetty 8.9 mi
- 森漁港 1.4 mi
- Fishing fathom 4.4 mi
- 釣具のフレンド 5.0 mi
Within 9.3 mi. A spot may be missing or closed. Open the map on OpenStreetMap · Missing one? Add it to OpenStreetMap
Spots: © OpenStreetMap contributors (ODbL) and Overture Maps.
Tides near IyoTides nearby
- Masaki2.6 mi
- Matsuyama7.1 mi
- Hōjō16 mi
- Yawatahama26 mi
- Ikatagoshi27 mi
- Imabari28 mi
- Saijō30 mi
- Ōshima32 mi
- Kure34 mi
- Kaminoseki34 mi
Iyo at a glance
- Town or city of about 35,133 people. Coordinates: 33.751° N, 132.701° E.
- It is 51 mi west of Shikokuchūō, the main place in Ehime. The sun rises 3 min later and sets 4 min later than in Shikokuchūō.
- The nearest tide station, Matsuyama, is 7.5 mi to the north.
- Its coast faces west.
- Beaches and harbors nearby: Gunchū-kō (0.7 mi), Masaki-kō (2.4 mi).
Questions about IyoQuestions
What time is high tide today in Iyo?
Today in Iyo there are high tides at 11:09 am (11.9 ft) and 10:34 pm (10.2 ft) and low tides at 4:21 am and 4:58 pm. Tide coefficient 89.
What time is sunset today in Iyo?
At 5:20 pm. There is light until the end of civil twilight, at 5:46 pm.
What time is sunrise tomorrow in Iyo?
At 6:26 am. First light comes at 5:31 am.
What phase is the moon today?
Waning gibbous, 88% illuminated. New moon on Mon, Nov 9 · 4:03 pm.
When are the next spring tides?
From October 27 to 29, together with the lunar perigee: they will be stronger than usual.
What are today's solunar periods?
Major 1:11–3:11 am, Minor 9:20–10:20 am, Major 1:43–3:43 pm, Minor 7:04–8:04 pm. Today's activity is medium.
What's the weather like today in Iyo?
Light drizzle, from 46 °F to 70 °F, with a light air from the east-northeast (2 mph) and a 40% chance of rain.
How is the sea today in Iyo?
Smooth (Douglas 2): 0.4 ft waves with a period of 2.5 s from the north-northeast. The water is 73.4 °F.
When is the best time to visit Iyo?
The best time to visit Iyo is from September to October and in May: highs of 75 °F to 84 °F, about 10 rainy days a month and 6 hours of sunshine a day.
Can I use this data for navigation?
No. These are predictions for fishing and leisure; for navigation, use the official publications.
Where this data comes from
Tide: Matsuyama station, with constants from TICON-4 (Hart-Davis, Dettmering and Seitz, 2025, SEANOE), licensed CC BY 4.0, via Slackwater database (changes). Sun and moon: our own calculation with astronomy-engine. Places: GeoNames (CC BY 4.0). Coastline: © OpenStreetMap contributors (ODbL).