BrrChecker: Water Temperature
Sea water temperature & tides
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
New: BrrCommunity – measuring together. Your Apple Watch measures the water temperature, the reading shows up at the spot. 3,000+ US spots. Try Pro free for 7 days.
Brr – or bliss? BrrChecker tells you how warm the water really is before you risk your big toe.
Over 3,000 official measuring stations across the United States.
Current water temperatures for over 13,000 lakes, rivers, lidos and coastlines in 80 countries – from over 70 official and open sources: national monitoring networks, buoys, health-authority samplings and, where no gauge exists, vetted lake models.
MADE FOR U.S. WATERS
• 3,000+ stations coast to coast: NOAA buoys right at your surf break, USGS river gauges, the Great Lakes network, NERRS estuary sondes, Chicago's beach sensors and Waikiki's nearshore probes
• EPA annual water-quality ratings for 250+ beaches
• From Malibu to Maine, Alaska to the Keys — real measurements first, models only where no sensor exists
THE PERFECT PLUNGE
• Widget with temperature and trend on your Home and Lock Screen – and on Apple Watch, which fetches its own data, even without your iPhone
• History curve: did the sun deliver, or did the rain spoil it all?
• Temperature alert: BrrChecker pings you when your water hits your target temperature
• Favorites for your swimming lake, river spot and after-work dip
• Tides for coastal spots: high and low water at a glance
• River levels at a glance: low, normal or high – anchored to official reference values, with history in cm and m³/s
YOUR SESSIONS – THE BRRLOG
• Log every swim, dip, SUP or surf session – with the official water temperature from the nearest station at the moment you were in
• Apple Watch leads the workout: start it from your iPhone or right on your wrist, the phone can stay on shore. Heart rate, calories, distance and Ultra water temperature flow in from Health – and the session counts toward your rings
• Photos, notes and your Brr scale, mirrored to your private iCloud – we never see them
BRRCOMMUNITY – MEASURING TOGETHER
• Your Apple Watch measures the water temperature while you swim. Share it and you help cover rarely sampled spots – the reading shows up in the app at that spot, anonymously and without an account
• Free for everyone, can be switched off in Options
WIND FOR SURF & KITE
• Knots, gusts and direction with an onshore/offshore chip at coastal spots, measured buoy wind beats the model, a 48-hour chart with the best kite window
THE BRRSCORE
From 1 to 10, for seven sports: swimming, SUP, kayaking, surfing, windsurfing, kitesurfing and pump foiling. Wind, waves and water temperature combined – plus a wetsuit recommendation and a cold-water profile for those who mean it.
VACATION WHERE IT'S WARM
Filter by target temperature and discover the warmest spots from the Mediterranean to the Caribbean. "Show me water above 24 °C" – and your next destination is set.
SWIM CLEAN
Official EU bathing-water classification, bacteria levels and – where authorities provide them – blue-green algae warnings. Official swimming bans are always visible, even without Pro. In the US, 250+ beaches carry the official EPA annual rating.
FROM ICE BATH TO BATHTUB WARM
Whether it's 4 °C for the winter-swimming kick or 26 °C for a family day – BrrChecker knows both worlds. The name says it all.
Data-minimal: no personal data, no accounts, no ads.
Get BrrChecker – check first, then dive in.
BRRCHECKER PRO (subscription)
Some features require the Pro subscription (7-day free trial, then €4.99/year or your local App Store price): unlimited favorites, full history, BrrScore for all sports except swimming, water quality, widgets and Apple Watch, map and nearby, tides, water-level history & flow, photo impressions nearby, the BrrLog with Apple Watch sessions, wind for surf & kite, and temperature alerts. Everything else is and stays free.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
BrrCommunity – measure together
Your Apple Watch measures the water temperature while you swim. That lets you help measure rarely sampled bathing spots: your value is then visible anonymously in the app at the respective station. The whole community benefits – you too, with fresher values right where official samples are weeks old.
Plus bug fixes and improvements to performance and stability.
The developer, DANIEL HOHENHAUS, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- DANIEL HOHENHAUS
- Size
- 20.2 MB
- Category
- Weather
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later. - Apple Watch
Requires watchOS 11.0 or later.
- iPhone
- Languages
English and 6 more
- English, Dutch, French, German, Italian, Portuguese, Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- BrrChecker Pro $4.99
- Copyright
- © 2026 Daniel Hohenhaus

