How long can skin type VI tan without burning?
Fitzpatrick type VI (almost never burns, always tans) reaches the first redness after about 50 min at UV 8 and 80 min at UV 5, with no sunscreen. Its safe ceiling is UV 10 — above that, there is no unprotected midday window.
Deeply pigmented dark brown to black skin.
Today in Columbus
UV 0 right now (low) · peak UV 8.6 at 14:00 · skin type VI window 11:07–17:49
- 14:00 Peak UV hour
- 47 min Time to redness at peak, type VI
- 11:07–17:49 Your window
- 11:20–17:13 Protection recommended (UV 3+, WHO)
Type VI at every UV level
| UV index | No SPF | SPF 15 | SPF 30 | SPF 50 | Band |
|---|---|---|---|---|---|
| UV 1 | 6 h 40 | over 24 h | over 24 h | over 24 h | Low |
| UV 2 | 3 h 20 | over 24 h | over 24 h | over 24 h | Low |
| UV 3 | 2 h 13 | over 24 h | over 24 h | over 24 h | Moderate |
| UV 4 | 1 h 40 | over 24 h | over 24 h | over 24 h | Moderate |
| UV 5 | 80 min | 20 h | over 24 h | over 24 h | Moderate |
| UV 6 | 67 min | 16 h 40 | over 24 h | over 24 h | High |
| UV 7 | 57 min | 14 h 17 | over 24 h | over 24 h | High |
| UV 8 | 50 min | 12 h 30 | over 24 h | over 24 h | Very high |
| UV 9 | 44 min | 11 h 07 | 22 h 13 | over 24 h | Very high |
| UV 10 | 40 min | 10 h | 20 h | over 24 h | Very high |
| UV 11 | 36 min | 9 h 05 | 18 h 11 | over 24 h | Extreme |
Rows up to UV 10 are the levels where type VI keeps at least 40 minutes before the first redness. How this is calculated.
What type VI actually means
At 600 J/m², type VI has three times the tolerance of type I: 50 minutes at UV 8, and a limit of UV 10. That limit is only reached in the tropics, at altitude, or on snow. The natural protection of deeply pigmented skin is real and it is roughly equivalent to a low-factor sunscreen — not to an absence of exposure.
How to recognise it: Type VI is deeply pigmented skin that almost never burns. It still receives UV, and the numbers on this site still apply — they are simply longer.
What to do: The relevant risk for type VI is not sunburn but cumulative dose, and the places where it stops being theoretical are the equator, the mountains and the snow.
Where type VI sits among the six
- Type I — limit UV 3.3 17 min at UV 8 · MED 200 J/m²
- Type II — limit UV 4.2 21 min at UV 8 · MED 250 J/m²
- Type III — limit UV 5 25 min at UV 8 · MED 300 J/m²
- Type IV — limit UV 6.7 33 min at UV 8 · MED 400 J/m²
- Type V — limit UV 8.3 42 min at UV 8 · MED 500 J/m²
- Type VI — limit UV 10 50 min at UV 8 · MED 600 J/m²
Where the sun is strongest right now
- Cairns — UV 8.4Very high · Australia · peak at 12:00 tomorrow · type II window 08:42–09:42
- Darwin — UV 6.7High · Australia · peak at 13:30 tomorrow · type II window 09:06–10:12
- Brighton — UV 6.5High · United Kingdom · peak at 13:00 · type II window 10:00–10:22
Skin type VI — the questions people actually ask
How long can skin type VI stay in the sun?
It depends entirely on the UV index, not on the temperature or the season. Type VI has a minimal erythemal dose of 600 J/m², which gives about 2 h 13 at UV 3, 80 min at UV 5, 50 min at UV 8 and 36 min at UV 11, with no sunscreen and a clear sky.
What UV index is safe for skin type VI?
Up to UV 10. That is the level at which type VI still has 40 minutes before the first redness — the threshold UV Hour uses everywhere. UV 10 sits in the very high band, so on days above that, type VI gets a morning window and an afternoon window instead of one continuous one.
Am I skin type VI?
Deeply pigmented dark brown to black skin. Almost never burns, always tans. Type VI is deeply pigmented skin that almost never burns. It still receives UV, and the numbers on this site still apply — they are simply longer.
How much does SPF 30 change things for type VI?
At UV 8 it takes type VI from about 50 min to about over 24 h in laboratory conditions. In practice the two-hour reapplication rule arrives first, so treat SPF 30 as removing the burn deadline rather than extending it to a specific new time.