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In just 50 days, one of the best windows in years — and possibly the last great one of the decade — will open for viewing the northern lights. Around mid-March 2026, a combination of the solar cycle, celestial mechanics and dark skies will align to create prime conditions for aurora borealis sightings across the Northern Hemisphere.
With the sun beginning to quieten from its powerful solar maximum in 2024-2025, and daylight rapidly increasing north of the equator, March 2026 may be the last, best chance in the 2020s to catch an unforgettable aurora display — especially for those at lower latitudes.
March 2026’s Moonless Night Skies
At the core of the March 2026 aurora forecast is the moon’s phase. A last-quarter moon will rise on March 11, followed by a new moon on March 19, creating a rare dark sky window in the nights surrounding the spring equinox on March 20. With the moon absent or barely visible, even faint auroras will appear more vibrant against the inky blackness of the night sky between March 11 and around March 24, when the moon begins to brighten the post-sunset night sky in the run-up to a full moon on April 2.
Aurora Season Comes To An End
The spring equinox on Friday, March 20, marks a transition for aurora-hunters. On this day, the sun crosses the celestial equator heading north, resulting in nearly equal day and night across the globe, thanks to the 23.4-degree tilt of Earth’s axis.
It sees winter turn to spring in the Northern Hemisphere, and signals the slow but steady end of aurora season. As daylight hours lengthen, especially in Arctic regions within the permanent auroral oval (about 60 to 75 degrees latitude north), truly dark skies become rarer.
Understanding The ‘Equinox Effect’
Auroras are twice as likely close to the equinoxes. This is the Russell-McPherron effect, first proposed in a paper published in 1973. During equinoxes, the orientation of Earth’s tilted magnetic field becomes more favorable for interaction with the sun’s solar wind. The alignment allows energetic particles from the sun to more easily enter Earth’s magnetosphere. When they do, they collide with atmospheric gases, generating the glowing curtains of green, red, and purple light known as aurora.
Solar Maximum Begins To Fade
This year is expected to mark the tail end of solar cycle 25’s peak, known as the solar maximum. While solar flares and coronal mass ejections may continue into 2027, the odds of frequent and vivid auroras will slowly diminish as the sun settles into a quieter phase as it wanes towards solar minimum around 2030. The following solar maximum should be around 2035 — though the roughly 11-year-long solar cycle can differ in length in practice.
With fewer dark nights ahead and the solar cycle beginning its descent, the March 2026 aurora window may well be the last standout display of the decade. For those hoping to catch the northern lights at their finest, the countdown is on.
Wishing you clear skies and wide eyes.
