When is the best time to see the aurora?

The aurora is best seen when the sky is dark and clear, with an unobstructed view toward the north. During strong activity, the aurora can stretch high across the sky and reach far to the south. Activity often comes in pulses, so it pays to keep watching through the evening and night, not just at one specific moment.

In Norway, the aurora season usually runs from late September to late March, when the nights are dark enough. During periods of high solar activity, aurora can also occur from late August to early April, but then you are more dependent on strong outbursts and good light conditions.

Experience and statistics show that the spring equinox in March and the autumn equinox in September are often good periods for aurora. At these times, the interaction between the solar wind and Earth’s magnetic field is often more efficient, which can lead to increased activity. This is no guarantee, but it improves the odds when other conditions are favourable.

Can I see the aurora where I am?

If you enter your location on the site, we can tell you whether the aurora is expected to be visible where you are. You can also choose to receive alerts when we see the aurora approaching your area.

Where in Norway can I see the aurora?

The aurora is most commonly seen in Northern Norway, but during strong activity it can also be visible farther south. How far south it reaches varies from night to night. Some evenings it stays well to the north, other times it can cover large parts of the country.

How far south can the aurora be visible?

How far south the aurora reaches depends on the strength of the activity and how well it couples to Earth’s magnetic field. Some nights it stays in the north, other times it can be visible across much of the country, and on rare occasions it can extend as far south as France.

Is there a “best time of night”?

There is no single fixed time, other than that it needs to be dark. Aurora can occur throughout the night, but is often most active from the evening and into the night. That is why it is better to keep watching over time rather than stepping outside for five minutes and giving up.

Why can the aurora forecast change so quickly?

Aurora activity is controlled by the solar wind and how it couples with Earth’s magnetic field. These conditions can change within minutes. When the coupling suddenly becomes stronger, aurora activity can increase rapidly. When it weakens, activity can drop just as fast.

Is it enough to look at the aurora map?

Use the map as a guideline, not as a definitive answer. The map is based on a scientific model (Ovation) that calculates where the aurora may be visible, based on solar wind and magnetic activity.

One key factor is how the magnetic field in the solar wind is oriented toward Earth. When this coupling is strong, the aurora can be brighter than the map suggests. When the coupling is weak, the aurora may fail to appear even if the map looks promising.

In addition, cloud cover, light pollution, terrain, and darkness determine whether you actually get to see the aurora from where you are standing.

Do I need a camera or special equipment?

No. The aurora can be seen with the naked eye when conditions are good. A camera can capture more colour and detail, but it is not required to experience the aurora.

Can I see the aurora through clouds?

Usually not. Clouds block the view of the sky, and even strong aurora is of little help if the cloud cover is thick. That is why checking cloud conditions is always important in addition to the aurora forecast.

Does the aurora exist all year?

Yes, aurora occurs all year round. In Norway, however, it is too bright to see it during summer due to the midnight sun and bright nights. That is why we talk about an aurora season, even though the phenomenon itself never stops.

What should I watch for to have the best chance?

For the best chance, you should look at three things at the same time: cloud cover, the aurora forecast, and how the magnetic field in the solar wind couples to Earth.

If the aurora forecast shows potential activity where you are, it is wise to keep an eye on IMF Bz. This value indicates how the magnetic field in the solar wind is expected to be oriented at the time the forecast applies to.

When Bz is southward (negative values), the coupling with Earth is strong. This allows the particles that create aurora to enter the atmosphere more easily, increasing the chance of visible aurora. When Bz is northward (positive values), the coupling is weaker, and the aurora is often faint or absent.

Values around 0 (plus or minus a couple of units) are considered neutral. Aurora can still occur, but it is rarely as strong as when the coupling is clearly southward.