---
title: "海天気.jp - 海の天気予報アプリ — App Overview"
url: https://marlvel.ai/intel-report/weather/jp
category: Weather
developer: Risesystem, inc.
platforms: ios, android
rating: N/A (0 ratings)
pricing: free
report_level: overview
generated: 2026-05-05
last_verified: "2026-05-05T23:00:30.508Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** This app serves as a comprehensive meteorological tool specifically optimized for marine activities by combining granular coastal data with standard municipal weather forecasting.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Weather |
| Rating | N/A ★ (0) |
| Pricing | free |
| Platforms | iOS, Android |
| Latest Version (iOS) | 1.2.6 |
| Latest Version (Android) | 1.2.8 |
| Developer | Risesystem, inc. |

<!-- SECTION: Summary -->
## 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.

<!-- SECTION: Key Features -->
## Key Features

- **Marine Spot Forecasting**: Provides 1-hour interval forecasts for weather, wind, temperature, and wave height up to 84 hours in advance.
- **Marine Data Suite**: Includes specialized data such as tidal graphs, seawater temperature distribution maps, and animated current flow visualizations.
- **Extended Weather Outlook**: Offers 14-day weather forecasts in 3-hour intervals to assist with long-term activity planning.
- **Visual Precipitation Tracking**: Displays rain and lightning movement via video playback for both past and future 6-hour windows.
- **Personalization Tools**: Features a 'My Point' bookmarking system for quick access to frequently visited spots and integration with map apps for route navigation.

<!-- SECTION: Target Audience -->
## Who is it for?

Marine sports enthusiasts, anglers, and individuals requiring precise coastal and municipal weather data.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/%E6%B5%B7%E5%A4%A9%E6%B0%97-jp-%E6%B5%B7%E3%81%AE%E5%A4%A9%E6%B0%97%E4%BA%88%E5%A0%B1%E3%82%A2%E3%83%97%E3%83%AA/id1641843175?uo=4)
- [Google Play](https://play.google.com/store/apps/details?id=com.risesystem.umitenki&hl=en&gl=us)
- [Full Intelligence Report](https://marlvel.ai/intel-report/weather/jp)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/intel-report/weather/jp).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*