Aurora Forecast for Reykjavik, Iceland

Northern lights predictions for Reykjavik, updated every 6 hours

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Get more accurate predictions in the app

The website shows aurora score only. The app also factors in:

Darkness level at your location
Live cloud cover overlay
Moonlight interference
Light pollution analysis
Real-time push alerts when aurora is visible
30-night outlook to plan your trip

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30-Night Aurora Outlook for Reykjavik

First 7 nights from data, remaining nights available in the app

This forecast updates every 6 hours

The app updates every 15 minutes and sends push alerts when aurora is visible from Reykjavik. It also shows live cloud cover, darkness, moonlight, and light pollution — factors that make or break your aurora sighting.

Download now on the App Store

Aurora forecasts for other cities

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Understanding aurora in Reykjavik

Location & the auroral oval

Reykjavik is located at 64.1°N, 21.9°W (geographic) and 68.9° magnetic latitude. This places it directly under the auroral oval. The northern lights (aurora borealis) are frequently visible, even during moderate geomagnetic activity, requiring a minimum Kp index of 3.

Note that Reykjavik's magnetic latitude (68.9°) differs from its geographic latitude (64.1°) by 4.8°. This is because Earth's magnetic pole is offset from the geographic pole. For aurora forecasting, magnetic latitude is what matters — it determines how close you are to the auroral oval.

What is the Kp index?

The Kp index is a 0–9 scale that measures global geomagnetic disturbance. Higher Kp values push the auroral oval further from the poles — at Kp 3, aurora is common above 65° magnetic latitude; at Kp 7+, it can reach below 50°. A Kp of just 3 is enough to produce visible aurora here — that's considered quiet to unsettled activity, which occurs on most nights during active solar periods.

Viewing conditions that matter

Even when the Kp index is high enough for Reykjavik, several factors determine whether you'll actually see the aurora:

Cloud cover — the single biggest obstacle. You need clear or mostly clear skies.
Darkness — aurora is only visible when the sun is at least 6° below the horizon (civil twilight or darker).
Moonlight — a bright moon (especially full) washes out fainter aurora displays. New moon nights are ideal.
Light pollution — urban skyglow reduces contrast (Falchi et al. 2016). Getting even 15–20 km outside the city center makes a noticeable difference.

Best time to see aurora in Reykjavik

The best time to see aurora in Reykjavik is September through March, when nights are long enough for observation. At this high latitude, summer months bring extended twilight or midnight sun — aurora may be active overhead but invisible against a bright sky. The equinox months (September and March) often bring enhanced geomagnetic activity due to the Russell-McPherron effect.