TidePlanet

Today in Haikou there is high tide at 8:13 am (8.6 ft) and low tide at 5:21 pm. Tide coefficient 101. Right now the tide is rising toward the high tide at 8:13 am. The sun rises at 6:39 am and sets at 6:06 pm: 11 h 27 min of daylight. The moon is 88% illuminated (waning gibbous) and rises at 8:47 pm. Major solunar periods run from 1:44 am to 3:44 am and from 2:16 pm to 4:16 pm. The next spring tides arrive from October 27 to 29. The sea is slight, with 2.6 ft waves. There's a light breeze from the east-southeast (7 mph). Heavy drizzle, 75 °F.

Fishing

Fishing in Haikou today

Fishing forecast, 7 days →

Best time to fish

Solunar activity today: medium
7
Good day · 7 out of 10 5:40–6:20 pm Also 2:20–4:40 pm
  • Low tide at 5:21 pm
  • Sunset at 6:06 pm, golden hour from 5:36 pm
  • Steady pressure (30.00 inHg), light cross-shore wind (8 mph) and some swell (2.9 ft waves) to stir the water
  • Waning gibbous: a bit more activity than at the quarters
  • Highest tide coefficient today: 101 (big spring tides)

Your day at a glance

The best window, 5:40 pm to 6:20 pm, combines the 5:21 pm low tide, sunset and some swell. Also good from 2:20 pm to 4:40 pm, with the 5:21 pm low tide, a major period, a light onshore breeze and some swell.

Species with the most records nearby: blackhead seabream, mangrove red snapper, cobia and barramundi. What you can catch

How it works · Next 7 days

Beach

Beach day in Haikou

Beach forecast, 7 days →

Is it a beach day?

1
Not a beach day · 1 out of 10 No good beach time today.
  • Feels like 87 °F: beach weather
  • Onshore breeze (11 mph)
  • UV 5 (moderate): SPF 30 sunscreen
  • Water at 83 °F (very warm)
  • Low tide at 5:21 pm: more sand
  • Cloudy (91% cloud cover)

Thunderstorms during beach hours: get out of the water and off the sand as soon as you hear thunder.

Today, hour by hour

  • Swimming Use care · 2.9 ft

    2.9 ft waves every 5 s: swim with care and stay where you can stand. Low rip current risk. Always follow the lifeguard's flags.

  • Water 83 °F

    Very warm: barely refreshing.

  • Sun & sunscreen UV 5 · SPF 30

    Max UV 5 (moderate): SPF 30 sunscreen, reapplied every 2 hours.

  • Wind 11 mph

    Onshore breeze (11 mph).

  • Tide & sand 5:21 pm

    Low tide at 5:21 pm: that's when there's the most sand. High tide at 8:13 am. Coefficient 101 (spring tides): little sand left at high tide.

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 Haikou

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 Haikou

Tides for 7 days →

Today's high and low tides

  • ▼ Low tide 5:21 pm 1.4 ft

↑ Rising The tide is rising. 1 h 21 min to high tide at 8:13 am.

Tide coefficient 101 for the 8:13 am high tide. Big spring tides. The water rises and falls 7.2 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 November 28 (9.6 ft) and the lowest, on June 17 (-0.3 ft).

Mixed, mainly diurnal: on many days there is only one high and one low tide.

Heights above TLT. Astronomical prediction: wind and air pressure can raise or lower the water by a few inches, and more in a storm. Not for navigation. TLT

Tide coefficient and range in October

The biggest tides of the month come on October 31 (coefficient 120, 8.1 ft range). The smallest, on October 25 (coefficient 29, 3.2 ft).

Tide and solunar table · this week

Day Sun Tide 1Tide 2 Coef. Moon Major periods Activity
Today, Thu 29 6:39 am · 6:06 pm High tide 8:13 am · 8.6 ft Low tide 5:21 pm · 1.4 ft Coef. 101 88% Major periods 1:44 am · 2:16 pm Medium
Fri 30 6:39 am · 6:05 pm High tide 8:29 am · 9.2 ft Low tide 6:20 pm · 1.3 ft Coef. 113 79% Major periods 2:49 am · 3:21 pm Medium
Sat 31 6:39 am · 6:05 pm High tide 8:56 am · 9.6 ft Low tide 7:28 pm · 1.5 ft Coef. 120 69% Major periods 3:53 am · 4:23 pm Medium
Sun 1 6:40 am · 6:04 pm High tide 9:30 am · 9.5 ft Low tide 8:53 pm · 1.9 ft Coef. 119 58% Major periods 4:53 am · 5:21 pm Medium
Mon 2 6:40 am · 6:04 pm High tide 10:08 am · 9.1 ft Low tide 10:39 pm · 2.3 ft Coef. 110 Last quarter Major periods 5:48 am · 6:14 pm Medium
Tue 3 6:41 am · 6:03 pm High tide 10:52 am · 8.3 ft — Coef. 95 36% Major periods 6:39 am · 7:03 pm Medium
Wed 4 6:41 am · 6:03 pm Low tide 12:05 am · 2.8 ft High tide 2:51 pm · 7.4 ft Coef. 72 26% Major periods 7:26 am · 7:49 pm Low

▲ high tide · ▼ low tide · heights above TLT. 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 Haikou station (TICON-4), 4.3 mi from Haikou. Times and heights are its predictions.

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

How we calculate the tide

Sea and waves

The sea at Haikou

7-day waves

Sea stateSea state: slight

Slight Douglas 3 · gentle breeze, Beaufort 3
Waves 2.6 ft · 5.7 s from the east-northeast (77°)
Swell 2.4 ft · 4.9 s from the east-northeast
Current 2.2 mph toward the E

The waves you may find

  • Most commonMost common1.3 ft
  • Significant2.6 ft
  • Highest expectedHighest5.4 ft

One wave in seven is higher than the significant height, and about 3 times a day one reaches 5.4 ft. Before heading out, expect waves of up to 5.4 ft.

Wind on the coast and offshore

On the coast 7 mph ESE · gusts 12
Offshore (16 mi NNW)Offshore 11 mph E · gusts 19

Cross-shore wind. The coast faces northeast and the wind blows along the shore: drift and current run parallel to the beach.

Cross-shore Hourly wind →

Wave height, next 7 daysWaves, next 7 days

Waves stay much the same all week. The biggest waves arrive on Thursday 29: 3.5 ft with a period of 5 s, from the east-northeast (slight).

Water temperature

Water temperature →
Water now82.8 °F
Today 82.8–82.9 °F air: 75 / 80 °F
Satellite (2 days ago) 84.2 °F measured 2.5 mi away

Water temperature changes how fish behave: in very cold or very warm water they feed less. The water is steady these days, with no sudden changes.

Water warmer than normal for late October (+3.6 °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 6:53 am (local time).

Diving

Diving in Haikou today

Diving and snorkeling, 7 days →

Diving and snorkeling today

Likely visibility: fair
5
Average day · 5 out of 10 12:30–2:30 pm Also 5:00–6:00 pm
  • Tidal current running: mid-tide, the water is moving
  • 1.6 ft swell at 7 s from the east: some surge on the bottom
  • Light onshore wind (11 mph)
  • 1.0 mph current toward the west (model)
  • Sun high: more light underwater
Swell 1.6 ft 7 s · from the E
Likely visibility Fair Snorkeling: fair
Water and suit 82.8 °F Shorty or a rash guard
Current 1.0 mph toward the W
  • Slack water today: high tide 8:13 am (7:40–8:40 am) and low tide 5:21 pm (5:06–5:36 pm)
  • Likely visibility: fair. Swell (up to 2.9 ft at 4 s) and rain (1.24 in) over the last few days have stirred up the water. Based on the last 24 hours of data.
  • Water at 82.8 °F: a shorty or a rash guard.
  • Snorkeling: doable, with some waves or wind.
  • Night dive: dark from 6:28 pm. Waning gibbous (88%), rising at 8:47 pm: a bright night.

Your diving day at a glance

The best window, 12:30 pm to 2:30 pm, combines light wind and the sun high, though with tidal current and current. Also worth a look from 5:00 pm to 6:00 pm, with slack water at low tide and light wind, though with 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

Wreck and reef positions are approximate and not for navigation; a wreck’s depth runs from the top of the hull to the seabed.

Sites: © OpenStreetMap contributors (ODbL). Wrecks: EMODnet Human Activities (AND-International), from UK Hydrographic Office data, CC BY 4.0. Contains public sector information licensed under the Open Government Licence v3.0.

Weather

Weather in Haikou

14-day weather

Now in Haikou

Now 75 °F Heavy drizzle · feels like 82 °F · 75 / 80 °F
Low / high
75 / 80 °F
Rain
1.94 in · 100%
Clouds
96%
Humidity
97%
Dew pointDew point
74 °F
Visibility
5.4 mi
UV indexUV
0 · low
Air qualityAir
Fair · 32
Saharan dust
No

Pressure and fishing

  • ↗ RisingRising · now Anglers say fish bite less for a while
  • → SteadySteady Anglers expect normal activity
  • ↘ FallingFalling Anglers say fish feed more before the change

Rising now (+0.03 inHg in 3 hours). It barely changes over the next 48 hours. Rising pressure: anglers say fish bite less for a while. 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 RainRainHeavy drizzleShowersHeavy drizzleRainLight drizzlePartly cloudy
Temperature 78°75°75°76°80°79°77°76°
Wind (mph) 10 ENE7 E7 ESE8 E10 E10 E8 ESE9 ESE
Gusts 2017111521211615
Waves 3.5 ft3.1 ft2.7 ft2.6 ft2.7 ft2.9 ft2.9 ft3.0 ft
Rain 0.10 in0.15 in0.05 in0.10 in0.05 in0.19 in0.02 in0.00 in
  • 6:00 am 75° 7 ESE 2.7 ft
  • 9:00 am 76° 8 E 2.6 ft
  • 12:00 pm 80° 10 E 2.7 ft
  • 3:00 pm 79° 10 E 2.9 ft
  • 6:00 pm 77° 8 ESE 2.9 ft
  • 9:00 pm 76° 9 ESE 3.0 ft
  • 12:00 am 77° 8 ESE 2.8 ft
  • 3:00 am 76° 6 E 2.4 ft

Next 14 daysComing days

Day Sky Low / high Max wind Max wave High tides
Today · 29 Showers 75 / 80 °F 11 mph E 3.5 ft 8:13 am
Fri 30 Light drizzle 75 / 86 °F 11 mph E 2.8 ft 8:29 am
Sat 31 Mainly clear 73 / 87 °F 11 mph ESE 2.2 ft 8:56 am
Sun 1 Light drizzle 73 / 86 °F 8 mph E 1.8 ft 9:30 am
Mon 2 Light drizzle 75 / 86 °F 10 mph E 2.0 ft 10:08 am
Tue 3 Light showers 75 / 86 °F 8 mph ESE 2.2 ft 10:52 am
Wed 4 Drizzle 75 / 84 °F 7 mph ESE 2.4 ft 2:51 pm
Thu 5 Light drizzle 76 / 88 °F 6 mph ESE 2.4 ft 9:18 am · 5:37 pm
Fri 6 Light drizzle 76 / 83 °F 8 mph ESE 2.5 ft 7:49 am · 7:23 pm
Sat 7 Light drizzle 75 / 88 °F 8 mph ESE 2.3 ft 7:22 am · 8:50 pm
Sun 8 Drizzle 74 / 80 °F 13 mph ENE — 7:16 am · 10:11 pm
Mon 9 Light drizzle 74 / 78 °F 18 mph NE — 7:23 am · 11:30 pm
Tue 10 Light drizzle 76 / 78 °F 18 mph ENE — 7:36 am
Wed 11 Drizzle 73 / 79 °F 14 mph E — 7:51 am
  • Fri 30 Light drizzle 75° / 86° 2.8 ft
  • Sat 31 Mainly clear 73° / 87° 2.2 ft
  • Sun 1 Light drizzle 73° / 86° 1.8 ft
  • Mon 2 Light drizzle 75° / 86° 2.0 ft
  • Tue 3 Light showers 75° / 86° 2.2 ft
  • Wed 4 Drizzle 75° / 84° 2.4 ft
  • Thu 5 Light drizzle 76° / 88° 2.4 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 6:53 am (local time).

Sun

The sun in Haikou

Sunrise and sunset →

Sunrise and sunset

Rises 6:39 am in the ESE (104°)ESE
Sets 6:06 pm in the WSW (256°)WSW
  • First light 5:50 am
  • Full dark 6:54 pm
  • Civil dawn 6:16 am
  • Civil dusk 6:28 pm
  • Solar noon 12:22 pm (57° high)
  • Daylight 11 h 27 min (−1 min)
  • Evening golden hour 5:36 pm
  • Full dark 6:54 pm

Golden hour and the day-night map

Morning golden hour6:39–7:09 am
Evening golden hour5:36–6:06 pm
Haikou

Today the sun is 92,342,971 mi away and looks 32′ 11″ across.

Moon and solunar

The moon in Haikou

The moon for 7 days →

Moon phase and position

Waning gibbous · 88% 88% illuminated · 18.5 days old New moon on Mon, Nov 9 · 3:03 pm
Rises 8:47 pm in the ENE (60°)ENE
Sets 10:50 am tomorrow · in the WNW (300°) · set at 9:45 am
Transit 2:44 am overhead
Visible 14 h 3 min from 8:47 pm to 10:50 am

Today the moon is 226,493 mi away and looks 32′ 46″ across.

Solunar periods

Today's activity: medium
  • 1:44–3:44 am Major · the moon passes overhead · high activity
  • 2:16–4:16 pm Major · the moon passes underfoot · high activity
  • 9:15–10:15 am Minor · moonset · medium activity
  • 8:17–9:17 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 · 4:29 amNov 2 in 4 days
  • New moon Mon, Nov 9 · 3:03 pmNov 9 in 11 days
  • First quarter Tue, Nov 17 · 7:48 pmNov 17 in 19 days
  • Full moon Tue, Nov 24 · 10:54 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 Haikou

All places in Hainan →

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

Photo of Baishamen Lighthouse
Photo: Anna Frodesiak · CC0

Baishamen Lighthouse 3.3 mi northwest

Light
A white flash every 6 s · Fl W 6s
Range
18 nautical miles (21 mi)
Light height
256 ft above sea level
Tower height
236 ft
Built
2000

Other lighthouses nearby: Xiùyīng Lighthouse (5.2 mi west).

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

Tides near HaikouTides nearby

All places in Hainan, A to Z (77) → Hainan Island tides →

Haikou at a glance

  • Town or city of about 3,001,600 people. Coordinates: 20.034° N, 110.347° E.
  • It is 135 mi northeast of Sanya, the main place in Hainan. The sun rises 1 min earlier and sets 5 min earlier than in Sanya.
  • The nearest tide station, Haikou, is 4.3 mi to the west.
  • Its coast faces northeast.
  • Beaches and harbors nearby: Baishamen Gang (3.7 mi), Haikou Xiuying Gang (4.1 mi), Xiuying Matou (4.2 mi).

Questions about HaikouQuestions

What time is high tide today in Haikou?

Today in Haikou there is high tide at 8:13 am (8.6 ft) and low tide at 5:21 pm. Tide coefficient 101.

What time is sunset today in Haikou?

At 6:06 pm. There is light until the end of civil twilight, at 6:28 pm.

What time is sunrise tomorrow in Haikou?

At 6:39 am. First light comes at 5:50 am.

What phase is the moon today?

Waning gibbous, 88% illuminated. New moon on Mon, Nov 9 · 3:03 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 1:44–3:44 am, Minor 9:15–10:15 am, Major 2:16–4:16 pm, Minor 8:17–9:17 pm. Today's activity is medium.

What's the weather like today in Haikou?

Showers, from 75 °F to 80 °F, with a light breeze from the east-southeast (7 mph) and a 100% chance of rain.

How is the sea today in Haikou?

Slight (Douglas 3): 2.6 ft waves with a period of 5.7 s from the east-northeast. The water is 82.8 °F.

When is the best time to visit Haikou?

The best time to visit Haikou is from November to March: highs of 70 °F to 78 °F, about 5 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: Haikou 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).

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

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