しおさい-潮見表／天気予報

This is a free app that displays tidal information across Japan.
We support you who are concerned about tides and weather (temperature, rain, wind).

Easy to operate!
Get the information you want quickly!
Information other than tides is also compactly displayed on one screen!

・[Weather] You can view weather information every 3 hours for up to 5 days.
・[Warning] Check weather warnings at the same time
・[Terrain] Wind direction/speed and map make terrain your friend

You can also register your "favorite" points.
We provide weather/weather information according to the points.

■Main display data

(1) Tide information
Tide graph (tide table/tidal table), tide level, tide name, tide time
(2) Weather forecast
Temperature, humidity, clouds, precipitation, wind direction/speed, atmospheric pressure
(3) Moon phase/moon shadow
(4) Sunrise/sunset
(5) Moonrise/Moonset
Weather warning/advisory

■β function (beta)

At the center of a typhoon or cyclone, the pressure is lower than in the surrounding area, so the high-pressure surrounding air pushes down on the seawater, and the air near the center sucks up the seawater, causing sea level to rise. It is said that if the atmospheric pressure drops by 1 hectopascal (hPa), the tide level will rise by about 1 centimeter.


This is a "high-resolution precipitation nowcast" that analyzes and predicts the distribution of precipitation areas with high resolution.

■Caution/Disclaimer
・Cannot be used for sailing
・This app acquires location information, maintains its history, and uses it for the purpose of providing functions or information (including advertisements) suitable for customers.
・Some of the functions provided by this app require data communication, and communication charges will be borne by the customer.
・We are not responsible for any troubles or accidents that occur when using this app.
-This app is independently developed and does not represent any government agency.
・Some of the weather data in this app is provided using XML format telegrams from the disaster prevention weather information released by the Japan Meteorological Agency (https://xml.kishou.go.jp)