Advanced divers and up
Is it worth the trip?
74Good out of 100 for your dates
2 days tie for best
Mon 2 · 86 out of 100
- Sea
- 0.8 m
- Wind
- 5 kn
- Gusts
- 8kn
- Air
- 27°C
Tue 3 · 59 out of 100
- Sea
- 1.5 m
- Wind
- 18 kn
- Gusts
- 24kn
- Air
- 25°C
Wed 4 · 78 out of 100
- Sea
- 1.2 m
- Wind
- 11 kn
- Gusts
- 15kn
- Air
- 26°C
Thu 5 · 86 out of 100
- Sea
- 1.0 m
- Wind
- 3 kn
- Gusts
- 6kn
- Air
- 26°C
Fri 6 · 67 out of 100
- Sea
- 1.4 m
- Wind
- 14 kn
- Gusts
- 22kn
- Air
- 26°C
Sat 7 · 28 out of 100
- Sea
- 2.2 m
- Wind
- 22 kn
- Gusts
- 32knboats in
- Air
- 25°C
Sun 8 · 69 out of 100
- Sea
- 1.4 m
- Wind
- 13 kn
- Gusts
- 21kn
- Air
- 25°C
Tap a day for sea, wind and water. Full forecast
Forecast: next 10 days
Full forecast- Sun 182, good
- Mon 286, good
- Tue 359, fair
- Wed 478, good
- Thu 586, good
- Fri 667, good
- Sat 728, poor
- Sun 869, good
- Mon 957, fair
- Tue 1058, fair
The site in six facts
- Down to 18 mits deepest
- From a boathow you get in
- Advancedand up
- Water 26 °C3 mm wetsuit
- Faces NWswell from there reaches it
- Best Apr–Jun6 good days in 7
Full forecast
every day, every number
The score doesn't know currents, the visibility on the day or your certification.
Suits Advanced divers and up, as a dive guide states it. Scored for Advanced divers.
| Day | Score | Sea | Wind | Gusts | Air |
|---|---|---|---|---|---|
| Sun 1Nov | 82, good | 1.0 m | 5 kn | 8kn | 26°C |
| Mon 2Nov | 86, good | 0.8 m | 5 kn | 8kn | 27°C |
| Tue 3Nov | 59, fair | 1.5 m | 18 kn | 24kn | 25°C |
| Wed 4Nov | 78, good | 1.2 m | 11 kn | 15kn | 26°C |
| Thu 5Nov | 86, good | 1.0 m | 3 kn | 6kn | 26°C |
| Fri 6Nov | 67, good | 1.4 m | 14 kn | 22kn | 26°C |
| Sat 7Nov | 28, poor | 2.2 m | 22 kn | 32knboats in | 25°C |
| Sun 8Nov | 69, good | 1.4 m | 13 kn | 21kn | 25°C |
| Mon 9Nov | 57, fair | 1.4 m | 19 kn | 25knboats in | 24°C |
| Tue 10Nov | 58, fair | 1.6 m | 17 kn | 25kn | 23°C |
Sea is the waves near the site, in metres; wind and gusts in knots. "Boats in": gusts that keep dive boats in. More
Tide
- Sun 1 NovLow 04:17 −0.9 mHigh 11:25 +0.5 mLow 16:40 −0.0 mHigh 22:18 +0.5 m
- Mon 2 NovLow 05:35 −0.7 mHigh 12:50 +0.5 mLow 18:30 −0.1 m
- Tue 3 NovHigh 00:03 +0.4 mLow 07:03 −0.6 mHigh 14:02 +0.5 mLow 20:04 −0.2 m
Local clock times; heights about mean sea level. On open coasts the times are usually within a quarter of an hour; in bays, estuaries and on the Gulf of Mexico they can be an hour or more out. Slack water, the safest time to dive where there is current, is about half an hour either side of each high and low. Tide: EOT20 global ocean tide model, Hart-Davis et al. 2021, DGFI-TUM (doi:10.17882/79489), CC BY 4.0. Times and heights computed by us. A model, not a tide table: check a local table before you go.
Forecast updated . It refreshes every three hours. Forecast data: ECMWF, DWD, Météo-France and NOAA, served by Open-Meteo.com (CC BY 4.0). Changed by us. Generated using E.U. Copernicus Marine Service Information.
Best time to go
best Apr–Jun
Good diving days in a typical week, each month, for Advanced divers, from 2016 on (ERA5 history scored the same way).
- Jan4of 7: a trip from Sat 2 Jan
- Feb4of 7: a trip from Sat 6 Feb
- Mar5of 7: a trip from Sat 6 Mar
- Apr6of 7: a trip from Sat 3 Apr
- May6of 7: a trip from Sat 1 May
- Jun6of 7: a trip from Sat 5 Jun
- Jul5of 7: a trip from Sat 3 Jul
- Aug5of 7: a trip from Sat 7 Aug
- Sep5of 7: a trip from Sat 4 Sept
- Oct4of 7: a trip from Sat 2 Oct
- Nov4of 7: a trip from Mon 2 Nov
- Dec3of 7: a trip from Sat 5 Dec
Tap a month to see this spot for a trip then.
Typical, not a forecast: the sea and the mean wind of each day, with no gusts or rain in the history.
Map
the site and its town
新田洞窟・にたどうくつ on Google Maps · Directions
Each place wears its best day on these dates: green good, amber fair, pale red poor, as the key says.
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One finger scrolls the page; two fingers move the map. Pins are our own positions. Map OpenFreeMap, © OpenMapTiles, data © OpenStreetMap contributors.
About
the place in full, sources, credits
About 新田洞窟・にたどうくつ
A cave dive. It goes down to 18 m. You get in from a boat. It suits Advanced divers and up, as a dive guide states it. The coast faces NW: swell from the NW reaches it, and wind from the SE blows out to sea. 10 dive centres or shops within 10 km, the nearest 1.4 km away. The sea is about 22°C in February, its coldest month (5 mm wetsuit), and 29°C in July, its warmest (rash vest or 1 to 2 mm). For Advanced divers the best months are usually April, May and June, with about 6 good days in 7; in December, about 3. From the weather of past years. The town to stay in is Itoman. Within 5 km we also list 12 dive sites.
- What it is Cave.
- How deep Down to 18 m.
- Getting in From a boat.
- Who it suits Suits Advanced divers and up, as a dive guide states it.
- Dive centres 10 dive centres or shops within 10 km, the nearest 1.4 km away.
Water about 26°C: 3 mm wetsuit. Typical sea temperature for the time of year, not a forecast.
Visibility about 30 m. Typical for the time of year, estimated from ten years of NASA satellite water clarity, not a forecast. Clearest in Jul, Sep and Nov (over 30 m).
The score is the conditions only: the journey, the price and the partners never change it (how we score, how we earn).
Rough cost (estimate): about US$1,290–US$2,500 each
about US$1,290–US$2,500 each · 6 nights, 2 sharing: flights, hire car, stay, food.
Our estimate from typical public prices, not a quote: check the real prices before you book (where they come from). Prices are about, in US Dollar (USD): our pound figures at the European Central Bank's rate of 30 October 2026.
How we worked it out
| What | How we worked it out | Each |
|---|---|---|
| Flights | return ORD to OKA, estimated from distance and season, changing at HKG, full-service airlines, with a hold bag | about US$737–US$1,530 |
| Hire car | 6 days, shared | about US$107–US$174 |
| Stay | 6 nights, a mid-range double, shared | about US$208–US$348 |
| Food | 7 days eating out | about US$234–US$442 |
| Total | about US$1,290–US$2,500 |
Guided dives are not priced yet: we have no sourced price, so it is not in it. Prices from public sources, checked in 2026.
Where to stay: Itoman
70 min by car · 14 places to stay
about US$80/nightcountry average
About Itoman its beds, food and every spot near it
About US$80 a night is our estimate of the country's average 2-star double room that month: not each town's price, and not a quote. Drives are estimates. Prices are about, in US Dollar (USD): our pound figures at the European Central Bank's rate of 30 October 2026.
Getting there: about 26h 35m
About 26h 35m door to door from Chicago
Fly ORD → OKA, changing at Hong Kong International Airport (HKG), then 55 min by road
Flights ORD → OKA on your dates · Skyscanner
An estimate, one way; the journey never changes the score.
In the water
Dives and courses in Itoman · GetYourGuideDive gear hire in Itoman · GetYourGuide
Dive centres nearby
インザストリーム 1.4 km
Joy Joy 1.4 km
Coral Divers 1.5 km
えりせら ダイビング 1.5 km
ダイブイン浜 1.6 km
The nearest named dive centres and shops within 25 km, in a straight line; training agencies where the map states them. Listings, not a recommendation. Dive centres: © OpenStreetMap contributors (ODbL). Credits
What you might see
Too few open records near this site to list its animals. Ask a dive centre what you are likely to see.
This week: visibility about 25 m, about usual for the month (satellite plankton reading, 24 Oct). Estimated from the month's typical visibility and this week's satellite chlorophyll against the site's normal; heavy rain before a dive can still muddy it.
The current and the life no free forecast gives. Ask a dive centre before you book.