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UV Index in Longyearbyen Today
October 8, 2026 · Longyearbyen, Svalbard and Jan Mayen
Capital2,060 people
See today's UV index in Longyearbyen 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 Longyearbyen's coordinates and updated daily.
No protection needed
Hour by hour
Clear sky
Remember today
- Safe to be outside unprotected
Daylight: sunrise 08:24 – sunset 17:07
Tomorrow: UV 0 at its peak around 10:00
The UV index in Longyearbyen peaks at 0 (low) around 10:00 today. The index stays below 3 all day, so no particular sun protection is needed. Tomorrow the index is forecast to peak at 0 around 10:00.
UV index in Longyearbyen hour by hour
| Time | UV index | Level |
|---|---|---|
| 08:00 | 0 | Low |
| 09:00 | 0 | Low |
| 10:00 | 0.1 | Low |
| 11:00 | 0.1 | Low |
| 12:00 | 0.1 | Low |
| 13:00 | 0.1 | Low |
| 14:00 | 0.1 | Low |
| 15:00 | 0.1 | Low |
| 16:00 | 0 | Low |
| 17:00 | 0 | Low |
| 18:00 | 0 | Low |
UV index in Longyearbyen
Longyearbyen lies at 78°N. The midday sun reaches 6.0° above the horizon in Longyearbyen today, against a yearly ceiling of 35.2°. Elevation is what sets the ceiling for UV, and over Longyearbyen it is low even at midsummer, though snow can reflect UV and add to the exposure in spring.
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. |
See also sunrise, sunset and daylight hours in Longyearbyen.