Is UV 5 good for tanning?
Partly. UV 5 works for types III, IV, V, VI; the fairer types get a morning and an afternoon slot rather than one continuous window. UV 5 sits in the moderate band (3–5). Unprotected, type II has about 33 min before the first redness; type VI has 80 min.
The typical clear-sky ceiling of a British summer, a Melbourne day in October, or a Johannesburg winter midday — altitude alone adds around 21% there.
The verdict, skin type by skin type
| Skin type | Verdict at UV 5 | Time before redness | Own limit |
|---|---|---|---|
| Type I | Not in the middle of the day | 27 min | UV 3.3 |
| Type II | Not in the middle of the day | 33 min | UV 4.2 |
| Type III | Yes | 40 min | UV 5 |
| Type IV | Yes | 53 min | UV 6.7 |
| Type V | Yes | 67 min | UV 8.3 |
| Type VI | Yes | 80 min | UV 10 |
Today in Columbus
UV 0.1 right now (low) · peak UV 8.6 at 14:00 · skin type II window 11:07–11:35 and 16:36–17:49
- 14:00 Peak UV hour
- 19 min Time to redness at peak, type II
- 11:07–11:35 First of 2 windows
- 11:20–17:13 Protection recommended (UV 3+, WHO)
Why the level matters less than the clock
UV 5 sits at the top of the moderate band, and it is the level most people in northern Europe will actually meet on a good day. Fair skin burns in about 27 minutes, which is exactly the length of time that feels like nothing while it is happening.
The honest framing of the question is not whether UV 5 is good, but how much of it you take. The dose is UV × time, so twenty minutes at UV 5 and 25 minutes at UV 4 put the same amount of energy into your skin. The difference is how easy it is to overshoot at UV 5 — 33 min is short enough to pass while you are reading.
What to do: This is the first level where the burn happens before you notice the heat. Set a timer, or let something else watch the clock for you.
Where the UV index reaches 5
- Newcastle upon Tyne — UV 5Moderate · United Kingdom · peak at 12:00 · type II window 11:00–11:43
- Birmingham — UV 4.8Moderate · United Kingdom · peak at 12:00 · type II window 11:00–11:38
- Glasgow — UV 5.2Moderate · United Kingdom · peak at 13:00 · type II window 13:23–14:29
Questions people ask about this
Is UV 5 good for tanning?
Partly. UV 5 works for types III, IV, V, VI; the fairer types get a morning and an afternoon slot rather than one continuous window. At UV 5, type II reaches the first redness in about 33 min with no sunscreen, so the tan has to be built in short sessions rather than one long one.
Is UV 5 too high to tan safely?
Not for types III, IV, V, VI, whose limit sits at or above UV 5. For the others it is: their unprotected time falls under 40 minutes, which is short enough to be crossed without noticing.
What is the best time of day to tan at UV 5?
The hours either side of the peak, not the peak itself. UV follows the sun, so a day that reaches UV 5 at solar noon is around UV 3 two hours before and after. That is where the usable window sits for fair skin — the live chart on this page shows the current forecast for your location.
Can you tan faster at UV 5 than at a lower level?
You reach the same dose sooner, which is not the same as tanning better. Melanin production has a ceiling; going past it produces a burn, and a burn peels, which removes the tan. A shorter session at UV 5 and a longer one at UV 4 give a comparable result, and only one of them risks the peel.