JEPS DIVING SEASON GUIDE
Japan water season and water temperature guide: Confirm area, cold weather clothing and dry clothing
Japan's northern and southern regions, sea surface data, actual points, depth and personal cold resistance are different; unnecessary for one month or fixed thickness judgment.
QUICK ANSWER
Monthly is the starting point, first question is the water temperature and equipment provided in the recent past.
Different seasonal conditions, different sea surface temperatures, and different actual depths in the oceans of Okinawa, Honshu, Izu, and Shikoku. Recent measurements confirmed at the time of reservation, depth and time of reservation, type and size of winter clothing, continuous water safety, dry clothing test, and warming after taking off from the water.
Related Guides
3 pieces of interaction guide
Sea condition cancellation confirmation
Separation confirmation wind wave, Nomi doyo water temperature.
Equipment lease confirmation
Confirm winter clothing size and rental range.
Preparation for Funata Yokoha ship
Confirmation: Waiting on board and keeping warm after takeoff.
COMPARE
Water temperature judgment 4 layers
| Information | OK, I understand | Confirm supply |
|---|---|---|
| 季節月份 | The direction of great fortune and direction | Changes in sea conditions this year |
| sea surface temperature | Grand ocean trend | point depth and temperature cline |
| Actual vendor measurements | Recent developments | Depth and dwell time per day |
| personal feelings | Demand for cold resistant length | Continuous hydration and separation of water and warmth |
CHECKLIST
Check 6 items before making a reservation
recent water temperature
In-depth information on actual questions.
dive time
Confirm that each branch is continuously disbursed.
cold-proof clothing
Confirmed type, thickness and length.
Dry clothing
Confirm study requirements or use teaching.
Tsukaho Warm
Selection of hats, cloaks, and inner sleeves.
Preparation for takeoff
Preparation rags, cloak and head insulation.
OFFICIAL SOURCES
Official information on warm sea water and winter clothing
JMA: Sea Surface Temperature
Confirmed long-term regional differences in sea surface temperature in the seas near Japan.
PADI: Wetsuits
Confirm the temperature and selection of winter clothing types and thickness principles.
FAQ
Seasonal and hot water issues in Japan
Is it possible to have four seasons in Japan?
There are huge differences in sea areas between north and south of Japan, seasonal influences on water temperature, sea conditions, and the availability of equipment. Confirm the destination, date, and supplier's information, and the national average judgment is unnecessary.
Is it the same between Okinawa and Honshu?
Unidentified. Latitude, ocean currents, inside and outside the bay, depth and weather, differences in city construction, possible differences in the same sky, and recent water temperature when making reservations.
Does sea surface water temperature directly represent water depth?
Impossible. Compatible with sea surface data, general trend, but depth, thermal layer and ocean currents, possible further cooling of the water, recent actual measurements by the contractor.
Is it good for cold weather clothes?
Not right. Simultaneously consider water temperature, flood time, number of continuous branches, individual cold resistance, size and lamination, activity level and weight, depending on the vendor's plan and cooperation selection.
Seasonal demand for dry clothing?
Dry clothing needs are determined by water temperature, region, season and personal cold resistance, as well as demand for accurate measurements and usage techniques. At the time of the exam, we will provide you with a teaching plan to confirm whether or not it is correct or not.
Continuation of the second branch of water cooling?
After taking off from the water, the waiting time due to the wind, etc., and the accumulated heat flow may increase and the feeling of coldness increases. Requires preparations such as a cloak, wool rag, head protection and drinking water, and not suitable for training.
Do you have any questions about water temperature and Japanese equipment at the time of reservation?
Questions about recent water temperature, estimated depth and time, types of winter clothing, thickness and dimensions, hats and cloaks, dry clothing selection, and heating equipment on board or on shore.
SEASON & WATER DECISION
Determination date for "cooling level and sea conditions" before water heating and prior use
Short answer:In Japan, the temperature of the water is determined by the physical sensation of the same month; the length of the ship sailing, the number of winds, the number of sewage systems, whether or not there is a wind-shielded rest room, and the degree of urban change that requires heating can be easily cooled by hand. Assuming the local area and the date and time of the store, we will give you the weekly forecast, the current sea conditions and the appropriate winter clothing thickness, and there is no need for equipment to determine the average water temperature on the network.
| Your priority conditions | Document confirmation required before revision | comparatively cheap |
|---|---|---|
| Reiji, first school or Kumi Sewer | Types of cold weather clothing/size, suitability of multiple hats/mantles, costs/costs etc. | Pending short-term physical therapy plans, changing clothes, warming rest time |
| Thoughtful flower season or series | Meeting time, candidate amount, cancellation/revision period/withdrawal rules | Adjustable water flow for one day, and land travel |
| Unfortunate rainfall, strong winds or physical incompetence | Judgment/notification time, approval or rejection of shore change, difference in port or date change | Judgment on the day of training; coldness, fatigue, or failure to study during training |
Five things that can be asked directly by appointment
- “I plan to arrive in ○○ area on ○ month ○ day, and I will usually propose winter clothes for the next week?”
- “Is the cost correct or not, including winter clothing, staffing, shipping costs, transportation, maintenance and port communication costs?”
- “If the size is not suitable, the sewage is cold or unsuitable, is it possible to change it?”
- “Rain, wind, waves, full amount or traffic delays, what time will we be notified at the end of the night? Calculation of renewal or cancellation?”
- “My age, medical history, recent cold or medical condition, can I ask a doctor or a shopkeeper to confirm my needs?”
Can be viewed before launchJapan's atmospheric ocean wave prediction area，However, due to the current situation at the store and the current status of the store, it is difficult to judge whether the store is equipped with warm or safe equipment. The main text is a comparison of seasons and bodily sensations; see the time arrangement for gathering and returning to the port.曛水敶日过程 GUIDE，Ship schedule is easy and untimely request is made.Funata Yoko Ship Preparation Guide.Information confirmation date:July 31, 2026; water temperature, sea conditions, age and health restrictions, equipment and expenses/cancellation conditions, and written instructions and training judgment provisions.