Before the dive
Conditions for every spot.
A map of 4,000+ spots coloured by conditions: good, fair or difficult. Tap one and see why.
Read the sea, together.
Check the sea before you dive.
Swell, wind, water temperature, visibility and current for every spot, hour by hour for the next 72 h. Plus what divers found when they just came out of the water.
Join the free betaFree — in your mobile browser — 4,000+ spots worldwide
Join the free beta.
Your email and where you dive. You get a link straight away that opens Divy in your area, no code or password.
What you check before you dive.
Kept up to date
Checked by divers.
The forecast says what should be there. Divers who were just there say what is. Divy puts both together and tells you how sure it is.
After the dive
Your dives and your buddies.
Log a dive in a few seconds, keep it on your profile and see where your buddies have been diving.
The whole spot on one card.
This is a spot in Divy. Every number says where it comes from.
Status
Good, fair or difficult, in the same colour as the spot on the map.
Confidence and sources
High, medium or low, and which sources feed that spot.
Why, and official warnings
What’s holding it back that day, like “1.1 m swell”, or an official warning with who issued it (AEMET, NOAA) and a link to their site.
Swell and wind
Height, direction and period; wind with gusts. A colour dot shows how each one affects that spot: if it’s sheltered, it doesn’t count.
Water, visibility and current
Visibility comes from the latest satellite pass or from divers who were just there.
Hour by hour, 72 h
Pick the time of your dive, night dives included.
Models see the sea from above. Divers see it from inside.
Forecast
What should be there.
Ocean and weather models plus satellites: swell, wind, temperature and estimated visibility for any hour in the next 72 h.
CopernicusDWD ICONNOAASentinel-3
Divers
What’s actually there.
Dives logged at that spot: real visibility, current and temperature, with no names.
VisibilityCurrentTemperature
Every spot shows how sure we are: high, medium or low. More recent dives, more confidence. When divers disagree with the forecast, we tell you.
- Low confidenceForecast only, with nothing recent to back it up, or a report that contradicts it
- Medium confidenceOne diver in the last 24 h, or a recent forecast and satellite data that agree
- High confidenceTwo or more different divers in the last 24 h who agree
How it works
Check your spot.
Forecast for the next hours, and what divers logged recently.
Dive.
Your training and official warnings come first; Divy is guidance.
Log it in a few seconds.
Visibility, current, temperature. The next diver sees what you found.
4,000+ sea spots in 110 countries.
From Tenerife to the Red Sea and Coron. Search an area or a spot and the map takes you there; tell Divy where you usually dive and it opens there.
TenerifeRed SeaCoronCabo de PalosHawaii
Public sources: Copernicus Marine, the German weather service (DWD), NOAA, Sentinel-3 satellites, Open-Meteo, AEMET and local models where they exist. Each spot shows which ones it uses.
Some areas have lots of logged dives and some have none. Where there are few, the confidence level says so.
Your next dive helps the next diver.
I’m Luka. I started Divy because I never knew what the water would be like before a dive. It’s a free beta, and it gets better with every dive you log.
Luka — founder of Divy
Questions
Is it just for logging dives?
No. The main thing is checking the sea before you dive. Logging a dive takes a few seconds and helps the next diver; your buddies can see it too if you like. Keep your usual logbook.
Where does the data come from?
From public ocean and weather sources, which Divy brings together for each spot:
- Swell, current and water temperature: Copernicus Marine, the European ocean monitoring service. Its regional models cover the Mediterranean, the Iberian Atlantic, north-west Europe, the Baltic and the Black Sea; the global model covers the rest of the world.
- Wind and gusts: the German weather service (DWD), with its European and global models.
- Visibility: satellites that measure how clear the water is (Copernicus and NASA PACE). Divy uses the sharpest one available that day for each spot.
- Official warnings: AEMET in Spain and NOAA in the United States.
- Local models and buoys, where they exist: PacIOOS in Hawaii, Guam and the Marianas, and CariCOOS in Puerto Rico and the Virgin Islands.
- Dives logged by divers at that spot.
On every spot, “Confidence and sources” shows which ones are used there.
How does Divy decide if conditions are good?
For every spot and every hour in the next 72 h:
- It checks which way the spot faces the sea. Swell or wind coming from that side counts in full. From land or a sheltered side, it counts much less.
- It compares swell, wind, gusts and current with set thresholds, different for shore and boat entries. The status is the worst of them: good, fair or difficult. The reason tells you which one is holding it back.
- An official warning of yellow caps it at fair; orange or red makes it difficult.
- Recent dives correct the forecast. If someone found strong current or murky water in the last few hours, the status drops.
- Confidence shows how much backing there is: high with two or more different divers who agree in the last 24 h; low with forecast only or a report that contradicts it.
Visibility is shown separately, as an estimate, and doesn’t change the colour. The thresholds are reviewed against what divers log.
Is it free?
Yes.
Where does it work?
Everywhere: more than 4,000 sea spots worldwide.
Is the forecast accurate?
It’s an estimate from ocean models. That’s why divers’ logs and the confidence level matter.
Who sees what I log?
Visibility, current and temperature count for the spot without your name. Photos, story and sightings are for your friends only.
Does it tell me if it’s safe to dive?
It’s guidance, not a guarantee. Decide with your training and official warnings.
Do I need to install anything?
No. It works in the browser and you can add it to your home screen.