UV index in London today
Live UV level in London, United Kingdom right now, today's hourly forecast, and how long until your skin type burns.
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| Hour | UV index | Level |
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When is UV highest in London?
UV peaks around solar noon — roughly 12–2pm local time. Seasonally, UV in London peaks May through September. In that peak period, even in midsummer, UV in London usually peaks in the moderate to high range (5–7).
Winter UV in London is very low, and midday sun exposure in December and January carries little sunburn risk — though it is also too weak for meaningful vitamin D synthesis.
Do I need sunscreen in London today?
Use the live reading above: the protection threshold is UV 3. If any part of your time outdoors falls in the hours marked moderate or higher, wear SPF 30+ broad-spectrum sunscreen and reapply every two hours. Water, sand, and snow reflect UV and can push your effective exposure well above the forecast number — as does altitude, at roughly +10% per 1,000 m.