Overview · Full Intel report in progress

海天気.jp - 海の天気予報アプリ is an established weather app that is completely free.

What is 海天気.jp - 海の天気予報アプリ?

海天気.jp is a specialized weather forecasting application providing hyper-local data for over 8,000 marine spots across Japan. It offers detailed meteorological insights, including wind, temperature, wave height, and tidal data, designed to support marine leisure planning and daily weather tracking.

Current Momentum

v1.2 · 1mo ago

Active

Last updated 40d ago. 5 versions tracked.

Competition

Rivals identification in progress

7-Day Rank Pulse 🇺🇸

Weather

No ranking data

WeatherGrossing

Rating Pulse 🇺🇸

Gathering signals...

What makes this app unique?

What Does It Look Like?

What Are The Key Features?

Marine Spot ForecastingStandard

Provides 1-hour interval forecasts for weather, wind, temperature, and wave height up to 84 hours in advance.

Marine Data SuiteStandard

Includes specialized data such as tidal graphs, seawater temperature distribution maps, and animated current flow visualizations.

Extended Weather OutlookStandard

Offers 14-day weather forecasts in 3-hour intervals to assist with long-term activity planning.

Visual Precipitation TrackingStandard

Displays rain and lightning movement via video playback for both past and future 6-hour windows.

Personalization ToolsStandard

Features a 'My Point' bookmarking system for quick access to frequently visited spots and integration with map apps for route navigation.

How much does it cost?

Free

Who Built It?

Risesystem, inc. app icon 1
Risesystem, inc. app icon 2
Risesystem, inc. app icon 3
Risesystem, inc. app icon 4

Risesystem

(1.3K)

Providing specialized meteorological and marine forecasting tools for outdoor enthusiasts in Japan. Enabling precise planning for surfing, fishing, and golf activities.

Portfolio

6

Apps

Free 5
Weather40%
天気20%
Games20%

Explore the full Risesystem report

Portfolio breakdown, audience, momentum, and every app published by Risesystem.

Go deeper

Analysis in progress, available soon

What do users think recently?

Analysis in progress, available soon

Analysis in progress, available soon

What is the competitive landscape for 海天気.jp - 海の天気予報アプリ?

How's The Weather Market?

How does it evolve in the Weather market?

Rank progression

2 active rankings tracked — 30-day window

Strategic analysis coming soon

SWOT, key takeaways & outlook

The outtake for 海天気.jp - 海の天気予報アプリ

Key Takeaways

This app serves as a comprehensive meteorological tool specifically optimized for marine activities by combining granular coastal data with standard municipal weather forecasting.

Where Is It Heading?

Trend analysis

Available very soon

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with editorial review, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by 海天気.jp - 海の天気予報アプリ, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “海天気.jp - 海の天気予報アプリ Intelligence Report.” Updated May 5, 2026. https://marlvel.ai/apps/jp

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