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 4.0★ across 250+ titles — we've ranked them by what real users actually keep on their phones. Updated October 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | 2.6★ (14) | Yes | Yes | Aug 2026 | ||
| 2 | Free | 4.8★ (73) | No | Yes | Oct 2026 | ||
| 3 | Free | 4.7★ (16K) | No | Yes | Oct 2026 | ||
| 4 | $2.99 | 3.5★ (4) | No | No | Sep 2026 | ||
| 5 | Free | 5.0★ (4) | Yes | Yes | Aug 2026 | ||
| 6 | Free | 1.5★ (16) | Yes | No | Sep 2026 | ||
| 7 | Free | 3.0★ (2) | No | No | Aug 2026 | ||
| 8 | Free | 4.7★ (2.4K) | Yes | Yes | Oct 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.






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.