UV Index in Oslo Today
September 28, 2026 · Oslo, Norway
Capital580,000 people
See today's UV index in Oslo hour by hour below. The UV index shows how strong the sun's ultraviolet radiation is — the higher the number, the faster skin can burn. Values are calculated for Oslo's coordinates and updated daily.
No protection needed
Hour by hour
Clouds cut the peak by ~61%Clear sky
Remember today
- Safe to be outside unprotected
Daylight: sunrise 07:15 – sunset 19:02
Tomorrow: UV 2 at its peak around 12:00
The UV index in Oslo peaks at 1 (low) around 13:00 today. The index stays below 3 all day, so no particular sun protection is needed. Cloud cover is damping the peak by roughly 61% compared with a clear sky. Tomorrow the index is forecast to peak at 2 around 12:00.
UV index in Oslo hour by hour
| Time | UV index | Level |
|---|---|---|
| 07:00 | 0 | Low |
| 08:00 | 0.1 | Low |
| 09:00 | 0.1 | Low |
| 10:00 | 0.2 | Low |
| 11:00 | 0.4 | Low |
| 12:00 | 0.6 | Low |
| 13:00 | 0.7 | Low |
| 14:00 | 0.5 | Low |
| 15:00 | 0.2 | Low |
| 16:00 | 0.2 | Low |
| 17:00 | 0.1 | Low |
| 18:00 | 0 | Low |
| 19:00 | 0 | Low |
| 20:00 | 0 | Low |
UV index in Oslo
Oslo lies at 60°N. The midday sun reaches 28.1° above the horizon in Oslo today, against a yearly ceiling of 53.5°. Elevation is what sets the ceiling for UV, and over Oslo it is moderate, so the index peaks around midsummer and stays low all winter. Oslo is on the coast, where water and sand reflect UV back up at you and the sea breeze hides the heat that would otherwise send you into the shade.
What is the UV index?
The UV index is an international scale describing the strength of the sun's ultraviolet radiation at ground level. It starts at 0 and is effectively open-ended — at mid-latitudes it rarely exceeds 8, while in the tropics and high in the mountains it can pass 11. The higher the number, the less time it takes to get sunburnt.
The UV index depends mainly on how high the sun is in the sky. That is why it peaks around solar noon and is greatest in summer near the longest day of the year. Clouds, ozone, altitude and reflection from snow or water also affect the value.
The WHO UV scale
| UV index | Level | Recommendation |
|---|---|---|
| 0–2 | Low | No special protection needed. |
| 3–5 | Moderate | Use sunscreen (SPF 30+), seek shade around midday. |
| 6–7 | High | Sunscreen, hat and sunglasses. Avoid the sun 12:00–15:00. |
| 8–10 | Very high | Extra protection. Limit midday sun exposure. |
| 11+ | Extreme | Avoid the sun at midday. Full protection required. |