How long to tan in UV 7
In UV 7, Fair skin starts to burn after about 23 minutes and Medium skin after about 31. A first session is 4:34 for Fair skin and 6:17 for Medium, split across all sides.
Updated:
| Skin type | Starts to burn after | First session (20% of MED) |
|---|---|---|
| Very Fair (I) | ~19 min | 3:49 |
| Fair (II) | ~23 min | 4:34 |
| Medium (III–IV) | ~31 min | 6:17 |
| Olive/Dark (V–VI) | ~41 min | 8:11 |
The short answer for UV 7
UV 7 is the top of the WHO high band. You meet it at summer midday in mid-latitudes, especially on clear days by the sea.
Here is how long to tan in UV 7, from the table above. Very Fair skin gets a first session of 3:49 and burns after ~19 minutes. Olive/Dark skin gets 8:11 and burns after ~41 minutes.
These are total sun minutes for the whole session, not per side.
The real risk at UV 7: one long side
At UV 7 most burns do not come from the total time. They come from one side taking too much. You lie on your back, close your eyes, and twenty minutes pass. For Fair skin that is close to the whole burn dose, on one side only.
The fix is to split the session and turn on time:
| Position | Share of sun time |
|---|---|
| Front | about 30–35% |
| Back | about 30–35% |
| Left side | 15–20% |
| Right side | 15–20% |
Then end with a short rest in the shade. Each side gets only part of the dose, and nothing goes over.
Why short sessions still work
It is easy to think a four-minute session is pointless. It is not. Skin adapts to repeated small doses. Pushing past your threshold does not make you darker faster; it burns and peels, and you lose the colour.
In Suntan Workout the dose grows by about 18% per session. You rest a day or more between sessions, because sunburn can take 12 to 24 hours to show. After each one, the app asks how your skin reacted. Fine means move on. Pink means repeat. Red means step back two sessions and rest longer.
Watch the sky
UV 7 days are often bright with a few clouds. That is the tricky part. With broken cloud, the forecast can look lower than it is, and the sun returns at full strength. The app plans patchy-cloud days as if the sun were fully out. It also checks the live UV every 3 minutes and shortens the session if the UV goes up.
Wind will not save you either. UV does not feel hot, and a breeze hides the burn.
Who should be careful
Very Fair skin burns in under 20 minutes here. Use sunscreen on your face, lips, ears and tattoos. If you have a photodermatosis, take photosensitising medication, have had skin cancer or have many moles, talk to a doctor first. Remember that tanning is never safe; you can only lower the chance of a burn. If you do burn, get out of the sun and cool down, and see a doctor for blisters, fever or a large area.
Compare nearby levels
- Slightly weaker: how long to tan in UV 6
- Slightly stronger: how long to tan in UV 8
- Full method: how to tan without burning
- Your numbers today: tanning calculator
Get your exact minutes
The app reads the live UV index where you are, splits the time across positions and tells you when to turn over.