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.






24+ iOS apps curated and reviewed
Looking for free lake water temperature apps? 18 of our 24+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 2.6★ (14) | Yes | Yes | Aug 2026 | |
| 2 | Free | 3.0★ (2) | No | No | Aug 2026 | |
| 3 | Free | 4.8★ (73) | No | Yes | Aug 2026 | |
| 4 | Free | — | No | No | Aug 2026 | |
| 5 | Free | — | No | Yes | Aug 2026 | |
| 6 | Free | — | No | No | May 2026 | |
| 7 | Free | — | No | Yes | Aug 2026 | |
| 8 | Free | — | No | Yes | Aug 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 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.






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.




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.






Discover and share open water swimming locations like lakes, rivers, and beaches. Get real-time forecasts, tides, and ocean conditions for each spot. Connect with a community to share photos, reviews, and safety alerts.


Log your water activities with your Apple Watch, automatically recording temperature, duration, and depth. Track trends, set personal records, and share your swim experiences with visually appealing graphics. Enjoy private, ad-free data storage with iCloud sync.




Track real-time water levels for over 12,000 rivers and streams nationwide. Get flood alerts, monitor conditions, and plan boating or fishing trips with confidence. Access NOAA data and an interactive map to find gauges easily.




Get real-time water temperatures for over 600 swimming spots along the Swedish coast. This app provides constantly updated information, suggests nearby locations, and offers maps and details for most swimming areas.


Get current weather warnings and detailed forecasts for Germany. Offers real-time alerts for natural hazards, severe weather, and customizable notifications. Includes advanced features like thunderstorm tracking and user-submitted observations.


Get real-time water temperatures for lakes and rivers across Switzerland. Perfect for swimmers, kayakers, and water sports enthusiasts to check conditions before diving in, year-round.


Plan your fishing trips with a dedicated app that combines weather and water conditions. Get a comprehensive view of local forecasts, recent environmental changes, and water-specific details to make informed decisions before heading out.




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.


Visualize real-time ocean and lake buoy data, including wave height, wind conditions, and water temperature. Access historical graphs and detailed sensor readings to stay informed about marine environments.


Stay informed with accurate hourly and daily weather forecasts, including detailed radar maps for rain, snow, and lightning. Receive personalized alerts, track air quality, and get specialized information for winter sports and coastal conditions.