TidePlanet

Today in Sasebo there are high tides at 10:33 am (9.5 ft) and 9:52 pm (9.1 ft) and low tides at 3:49 am and 4:23 pm. Tide coefficient 92. Right now the tide is falling toward the low tide at 4:23 pm. The sun rises at 6:36 am and sets at 5:33 pm: 10 h 56 min of daylight. The moon is 88% illuminated (waning gibbous) and rises at 7:49 pm. Major solunar periods run from 1:23 am to 3:23 am and from 1:55 pm to 3:55 pm. The next spring tides arrive from October 27 to 29. The sea is calm (rippled), with 0.3 ft waves. There's a light breeze from the west-southwest (6 mph). Light drizzle, 67 °F.

Fishing

Fishing in Sasebo today

Fishing forecast, 7 days →

Best time to fish

Solunar activity today: medium
7
Good day · 7 out of 10 3:20–4:00 pm Also 9:30–10:30 am and 8:50–10:50 pm
  • Low tide at 4:23 pm
  • Major period 1:55–3:55 pm
  • Steady pressure (30.15 inHg), almost no wind and calm sea (0.4 ft waves)
  • Waning gibbous: a bit more activity than at the quarters
  • Highest tide coefficient today: 92 (spring tides)

Your day at a glance

The best window, 3:20 pm to 4:00 pm, combines the 4:23 pm low tide and a major period. Also good from 9:30 am to 10:30 am, with the 10:33 am high tide and moonset. Also good from 8:50 pm to 10:50 pm, with the 9:52 pm high tide and falling pressure.

Species with the most records nearby: striped mullet, red seabream, blackhead seabream and Japanese seabass. What you can catch

How it works · Next 7 days · Fishing rules

Beach

Beach day in Sasebo

Beach forecast, 7 days →

Is it a beach day?

4
Poor beach day · 4 out of 10 2:00–5:00 pm
  • Onshore breeze (6 mph)
  • Calm for swimming: 0.4 ft waves
  • Water at 75 °F (nice)
  • Low tide at 4:23 pm: more sand
  • Cloudy (100% cloud cover)
  • Feels like 68 °F: a bit cool

Today, hour by hour

  • Swimming Calm · 0.4 ft

    0.4 ft waves: calm for swimming. Low rip current risk. Always follow the lifeguard's flags.

  • Water 75 °F

    Nice for swimming.

  • Sun & sunscreen UV 2 · SPF 15

    Max UV 2 (low): SPF 15 sunscreen.

  • Wind 7 mph

    Onshore breeze (7 mph).

  • Tide & sand 4:23 pm

    Low tide at 3:49 am and 4:23 pm: that's when there's the most sand. High tide at 10:33 am and 9:52 pm. Coefficient 92 (spring tides): little sand left at high tide.

The best window, 2:00 pm to 5:00 pm, brings little wind, a calm sea, water at 75 °F and low tide at 4:23 pm, though with clouds and cool air.

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 Sasebo

Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors

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).

Tides

Tides in Sasebo

Tides for 7 days →

Today's high and low tides

  • ▼ Low tide 3:49 am 0.1 ft
  • ▲ High tide 10:33 am 9.5 ft · coef. 92
  • ▲ High tide 9:52 pm 9.1 ft · coef. 86

↓ Falling The tide is falling. 4 h 56 min to low tide at 4:23 pm.

Tide coefficient 92 for the 10:33 am high tide and 86 for the 9:52 pm high tide. Spring tides. The water rises and falls 9.4 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 September 12 (10.4 ft) and the lowest, on December 25 (-1.2 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 106, 9.9 ft range). The smallest, on October 19 (coefficient 22, 3.1 ft).

Tide and solunar table · this week

Day Sun Tide 1Tide 2Tide 3Tide 4 Coef. Moon Major periods Activity
Today, Thu 29 6:36 am · 5:33 pm Low tide 3:49 am · 0.1 ft High tide 10:33 am · 9.5 ft Low tide 4:23 pm · 3.8 ft High tide 9:52 pm · 9.1 ft Coef. 92 88% Major periods 1:23 am · 1:55 pm Medium
Fri 30 6:37 am · 5:32 pm Low tide 4:35 am · 0.5 ft High tide 11:29 am · 8.9 ft Low tide 5:12 pm · 4.4 ft High tide 10:35 pm · 8.5 ft Coef. 77 80% Major periods 2:28 am · 3:00 pm Medium
Sat 31 6:38 am · 5:31 pm Low tide 5:26 am · 1.2 ft High tide 12:36 pm · 8.2 ft Low tide 6:12 pm · 5.0 ft High tide 11:30 pm · 7.8 ft Coef. 61 69% Major periods 3:32 am · 4:02 pm Medium
Sun 1 6:39 am · 5:30 pm Low tide 6:29 am · 2.0 ft High tide 2:01 pm · 7.8 ft Low tide 7:36 pm · 5.2 ft — Coef. 46 58% Major periods 4:32 am · 5:01 pm Medium
Mon 2 6:40 am · 5:29 pm High tide 12:50 am · 7.1 ft Low tide 7:50 am · 2.7 ft High tide 3:31 pm · 7.7 ft Low tide 9:23 pm · 4.9 ft Coef. 42 Last quarter Major periods 5:28 am · 5:54 pm Medium
Tue 3 6:41 am · 5:28 pm High tide 2:48 am · 6.9 ft Low tide 9:24 am · 3.0 ft High tide 4:37 pm · 7.9 ft Low tide 10:40 pm · 4.2 ft Coef. 47 36% Major periods 6:19 am · 6:43 pm Medium
Wed 4 6:42 am · 5:27 pm High tide 4:25 am · 7.3 ft Low tide 10:41 am · 3.0 ft High tide 5:23 pm · 8.2 ft Low tide 11:31 pm · 3.3 ft Coef. 58 26% Major periods 7:06 am · 7:29 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

A · Official station

Tides from the Sasebo station (Japan Coast Guard), 0.7 mi from Sasebo. Times and heights are its predictions.

Station data attribution: Slackwater database (https://github.com/openwatersio/slackwater-database). Source: Japan Coast Guard, Hydrographic and Oceanographic Department, https://www1.kaiho.mlit.go.jp/TIDE/gauge/index_eng.php. Edited by Open Waters: constituent names, units and phases converted; tidal datums derived. Licensed Government Standard Terms of Use 2.0 (https://www1.kaiho.mlit.go.jp/copyright.html). Modified: see https://github.com/openwatersio/slackwater-database#modifications-to-source-data

How we calculate the tide

Sea and waves

The sea at Sasebo

7-day waves

Sea stateSea state: calm (rippled)

Calm (rippled) Douglas 1 · light air, Beaufort 1
Waves 0.3 ft · 3.7 s from the west-northwest (292°)
Swell 0.3 ft · 3.0 s from the west-northwest
Current 0.3 mph toward the N

The waves you may find

  • Most commonMost common0.2 ft
  • Significant0.3 ft
  • Highest expectedHighest0.7 ft

One wave in seven is higher than the significant height, and about 3 times a day one reaches 0.7 ft. Before heading out, expect waves of up to 0.7 ft.

Wind on the coast and offshore

On the coast 6 mph WSW · gusts 17
Offshore (14 mi WNW)Offshore 2 mph SSE · gusts 8

Onshore wind. The coast faces west and the wind blows straight in from the sea: more surf and backwash at the shore, and bait and boats drift toward land.

Onshore Hourly wind →

Wave height, next 7 daysWaves, next 7 days

Waves build over the next few days. The biggest waves arrive on Monday 2: 3.8 ft with a period of 5 s, from the southwest (slight).

Water temperature

Water temperature →
Water now74.7 °F
Today 74.7–74.8 °F air: 47 / 69 °F
Satellite (2 days ago) 75.0 °F measured 0.6 mi away

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 73.1 °F by Wednesday 4.

Water warmer than normal for late October (+2.5 °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 11:27 am (local time).

Diving

Diving in Sasebo today

Diving and snorkeling, 7 days →

Diving and snorkeling today

Likely visibility: good
10
Great day · 10 out of 10 9:30–11:50 am Also 3:40–5:10 pm
  • Slack water around high tide (10:33 am): little current from 10:00 am to 11:00 am
  • 0.3 ft swell at 3 s from the west-northwest: barely any surge
  • Light onshore wind (5 mph)
  • 0.4 mph current toward the north, weak (model)
  • Sun high: more light underwater
Swell 0.3 ft 3 s · from the WNW
Likely visibility Good Snorkeling: good
Water and suit 74.7 °F 3 mm wetsuit
Current 0.4 mph toward the N
  • Slack water today: low tide 3:49 am (3:30–4:10 am), high tide 10:33 am (10:00–11:00 am), low tide 4:23 pm (4:00–4:50 pm) and high tide 9:52 pm (9:30–10:20 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 74.7 °F: a 3 mm wetsuit.
  • Snorkeling: good, calm sea and light wind.
  • Night dive: dark from 5:58 pm. Waning gibbous (88%), rising at 7:49 pm: a bright night.

Your diving day at a glance

The best window, 9:30 am to 11:50 am, combines slack water at high tide, little swell, light wind, weak current and the sun high. Also good from 3:40 pm to 5:10 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.

How it works · Next 7 days

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

Weather in Sasebo

14-day weather

Now in Sasebo

Now 67 °F Light drizzle · feels like 67 °F · 47 / 69 °F
Low / high
47 / 69 °F
Rain
0.08 in · 86%
Clouds
95%
Humidity
68%
Dew pointDew point
56 °F
Visibility
15 mi
UV indexUV
2 · low
Air qualityAir
Fair · 39
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: −0.03 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 am3:00 am6:00 am9:00 am12:00 pm3:00 pm6:00 pm9:00 pm
Sky ClearMainly clearOvercastPartly cloudyLight drizzleOvercastOvercastLight drizzle
Temperature 51°48°48°62°68°68°64°61°
Wind (mph) 2 E4 ESE3 SE1 ESE7 WSW4 SW2 SSE2 SE
Gusts 6798181798
Waves 0.7 ft0.5 ft0.5 ft0.4 ft0.3 ft0.4 ft0.5 ft0.6 ft
Rain 0.00 in0.00 in0.00 in0.00 in0.00 in0.00 in0.00 in0.01 in
  • 12:00 pm 68° 7 WSW 0.3 ft
  • 3:00 pm 68° 4 SW 0.4 ft
  • 6:00 pm 64° 2 SSE 0.5 ft
  • 9:00 pm 61° 2 SE 0.6 ft
  • 12:00 am 62° 4 SSE 0.8 ft
  • 3:00 am 63° 5 SSW 1.0 ft
  • 6:00 am 64° 6 SSW 1.3 ft
  • 9:00 am 67° 6 WSW 1.7 ft

Next 14 daysComing days

Day Sky Low / high Max wind Max wave High tides
Today · 29 Light drizzle 47 / 69 °F 7 mph SSE 0.7 ft 10:33 am · 9:52 pm
Fri 30 Light rain 59 / 71 °F 9 mph W 2.0 ft 11:29 am · 10:35 pm
Sat 31 Clear sky 56 / 71 °F 10 mph NW 2.0 ft 12:36 pm · 11:30 pm
Sun 1 Overcast 49 / 71 °F 8 mph SSE 1.2 ft 2:01 pm
Mon 2 Rain 60 / 71 °F 15 mph W 3.8 ft 12:50 am · 3:31 pm
Tue 3 Overcast 53 / 65 °F 11 mph NNE 2.2 ft 2:48 am · 4:37 pm
Wed 4 Light drizzle 54 / 62 °F 9 mph NE 0.9 ft 4:25 am · 5:23 pm
Thu 5 Overcast 58 / 70 °F 6 mph NNW 0.7 ft 5:32 am · 5:59 pm
Fri 6 Partly cloudy 52 / 62 °F 14 mph N 2.4 ft 6:24 am · 6:29 pm
Sat 7 Overcast 52 / 61 °F 10 mph NE 1.4 ft 7:08 am · 6:58 pm
Sun 8 Overcast 53 / 65 °F 11 mph NNW — 7:48 am · 7:26 pm
Mon 9 Overcast 45 / 58 °F 9 mph N — 8:24 am · 7:55 pm
Tue 10 Partly cloudy 45 / 60 °F 9 mph NNW — 8:59 am · 8:23 pm
Wed 11 Overcast 46 / 62 °F 6 mph SW — 9:33 am · 8:53 pm
  • Fri 30 Light rain 59° / 71° 2.0 ft
  • Sat 31 Clear sky 56° / 71° 2.0 ft
  • Sun 1 Overcast 49° / 71° 1.2 ft
  • Mon 2 Rain 60° / 71° 3.8 ft
  • Tue 3 Overcast 53° / 65° 2.2 ft
  • Wed 4 Light drizzle 54° / 62° 0.9 ft
  • Thu 5 Overcast 58° / 70° 0.7 ft
See all 14 days →

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.

Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 11:27 am (local time).

Sun

The sun in Sasebo

Sunrise and sunset →

Sunrise and sunset

Rises 6:36 am in the ESE (105°)ESE
Sets 5:33 pm in the WSW (254°)WSW
  • First light 5:42 am
  • Full dark 6:27 pm
  • Civil dawn 6:11 am
  • Civil dusk 5:58 pm
  • Solar noon 12:05 pm (43° high)
  • Daylight 10 h 56 min (−2 min)
  • Evening golden hour 4:59 pm
  • Full dark 6:27 pm

Golden hour and the day-night map

Morning golden hour6:36–7:11 am
Evening golden hour4:59–5:33 pm
Sasebo

Today the sun is 92,344,277 mi away and looks 32′ 11″ across.

Moon and solunar

The moon in Sasebo

The moon for 7 days →

Moon phase and position

Waning gibbous · 88% 88% illuminated · 18.5 days old New moon on Mon, Nov 9 · 4:03 pm
Rises 7:49 pm in the ENE (56°)ENE
Sets 11:07 am tomorrow · in the WNW (304°) · set at 10:01 am
Transit 2:23 am overhead
Visible 15 h 18 min from 7:49 pm to 11:07 am

Today the moon is 226,480 mi away and looks 32′ 46″ across.

Solunar periods

Today's activity: medium
  • 1:23–3:23 am Major · the moon passes overhead · high activity
  • 1:55–3:55 pm Major · the moon passes underfoot · high activity
  • 9:31–10:31 am Minor · moonset · medium activity
  • 7:19–8:19 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.

Place

Where to fish in Sasebo

All places in Nagasaki →

Piers, ramps and tackle shops nearby

Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors

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.

Nearest lighthouse

Kogo Zaki 5.7 mi southwest

Light
A white flash every 6 s · Fl W 6s
Range
21 nautical miles (24 mi)
Light height
210 ft above sea level
Tower height
49 ft

Light details: NGA List of Lights (USA); the rest from Wikidata. For reference only: not for navigation. Sources and licenses

Tides near SaseboTides nearby

All places in Nagasaki, A to Z (362) → Kyushu tides →

Sasebo at a glance

  • Town or city of about 243,223 people. Coordinates: 33.168° N, 129.725° E.
  • It is 30 mi north of Nagasaki, the main place in Nagasaki. The sun rises 1 min later and sets at the same time than in Nagasaki.
  • The nearest tide station, Sasebo, is 0.7 mi to the south.
  • Its coast faces west.
  • Beaches and harbors nearby: Sasebo Kō (3.4 mi), Ainoura Kō (4.5 mi).

Questions about SaseboQuestions

What time is high tide today in Sasebo?

Today in Sasebo there are high tides at 10:33 am (9.5 ft) and 9:52 pm (9.1 ft) and low tides at 3:49 am and 4:23 pm. Tide coefficient 92.

What time is sunset today in Sasebo?

At 5:33 pm. There is light until the end of civil twilight, at 5:58 pm.

What time is sunrise tomorrow in Sasebo?

At 6:37 am. First light comes at 5:43 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 1:23–3:23 am, Minor 9:31–10:31 am, Major 1:55–3:55 pm, Minor 7:19–8:19 pm. Today's activity is medium.

What's the weather like today in Sasebo?

Light drizzle, from 47 °F to 69 °F, with a light breeze from the west-southwest (6 mph) and a 86% chance of rain.

How is the sea today in Sasebo?

Calm (rippled) (Douglas 1): 0.3 ft waves with a period of 3.7 s from the west-northwest. The water is 74.7 °F.

When is the best time to visit Sasebo?

The best time to visit Sasebo is in October and in May: highs of 75 °F, about 8 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: Sasebo station of the Hydrographic and Oceanographic Department of the Japan Coast Guard. 出典:海上保安庁ホームページ, under the Government of Japan Standard Terms of Use 2.0; harmonic constants adapted by Open Waters, via Slackwater database (changes) (海上保安庁海洋情報部「潮汐調和定数」を加工して作成). Not an official Japan Coast Guard publication. Sun and moon: our own calculation with astronomy-engine. Places: GeoNames (CC BY 4.0). Coastline: © OpenStreetMap contributors (ODbL).

Spotted a mistake? Tell us · How we calculate the tide

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Time Tides, sun and moon
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