Get real-time sea and lake temperatures worldwide with historical data and custom alerts for various water activities. Compare locations, view seasonal trends, and explore with enhanced map features.






250+ iOS apps curated and reviewed
The best water temperatures apps on iPhone average 3.9★ across 250+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 2.6★ (14) | Yes | Yes | Aug 2026 | |
| 2 | Free | 4.8★ (71) | No | Yes | Aug 2026 | |
| 3 | Free | 5.0★ (4) | Yes | Yes | Aug 2026 | |
| 4 | Free | 4.7★ (16K) | No | Yes | Aug 2026 | |
| 5 | $2.99 | 4.3★ (3) | No | No | Jul 2026 | |
| 6 | Free | 3.0★ (2) | No | No | Aug 2026 | |
| 7 | Free | 4.7★ (2.4K) | Yes | Yes | Aug 2026 | |
| 8 | Free | 1.5★ (16) | Yes | No | Jun 2026 |






Get real-time sea and lake temperatures worldwide with historical data and custom alerts for various water activities. Compare locations, view seasonal trends, and explore with enhanced map features.






Get real-time sea, ocean, lake, and river water temperatures worldwide. Plan your beach trips, swimming, or surfing with detailed location data and accurate weather forecasts. Save favorite spots and receive smart notifications for temperature changes.






Get real-time sea and ocean temperatures worldwide to plan your perfect beach day. Access up to a 10-day forecast, water clarity, and salinity data for over 20,000 locations. Save your favorite spots and view temperature history.


Access comprehensive NOAA marine weather data, including real-time buoy readings, 5-day forecasts, and historical wave trends. Visualize data with map overlays and receive severe weather alerts. An Apple Watch app is also available.


Monitor and record water temperatures directly from your Apple Watch. Get real-time readings, switch between units, and track your session duration. Ideal for water sports enthusiasts and anyone interested in water conditions.


Get real-time water temperature data for bays, rivers, and lakes across Slovenia, plus major coastal areas in Croatia. Ideal for planning your next swim or water activity.


Access detailed buoy and ship observation data without weather forecasts or tide information. View current conditions, historical trends, and storm locations on an intuitive map. Monitor your favorite locations with customizable widgets.


This mapping application displays real-time ocean water and surface air temperatures across the United States. Data is sourced directly from NOAA's buoys and weather stations, providing current conditions.










Access worldwide tidal estimates, lunar data, and weather forecasts. Plan outdoor adventures with ease using current radar and offline predictions. Supports Apple Watch and includes a Today Extension for quick access.




Find free water refill stations across Hong Kong to easily top up your water bottle. This app helps you reduce plastic waste by locating fountains, viewing their temperature, and even reporting new ones.


Know the water temperature before you swim with live data for lakes, rivers, and beaches worldwide. Get tide information, water quality ratings, and sport suitability. Discover warm vacation spots and receive temperature alerts.


Monitor Black Sea water temperatures with real-time data. Utilizes automated buoys during summer and satellite imagery in colder months for comprehensive tracking.





