Leonids 2026: What to Expect in a Normal Year

1. Nov. 6Activity begins
2. Nov. 16-18U.S. late-night planning window
3. Nov. 17Regular maximum
4. Nov. 17-19Weak trail encounters

Timeline data: International Meteor Organization, reconciled with the American Meteor Society where noted. No nationwide local peak time is claimed.

The Leonids have one of the most dramatic histories in meteor astronomy. That reputation can mislead modern observers. Most returns are not storms, and the 2026 planning decision should be built around normal rates, local conditions and a few weak modeled trail encounters - not the spectacle recorded in 1833 or 1966.

The right expectation is a modest late-night and predawn shower with very fast meteors, occasional bright events and the possibility of brief glowing trains.

IMO lists the Leonids as active from November 6 through November 30. The regular nodal maximum is expected on November 17 at 23:45 UTC. A separate calculation cited by IMO places a comparable normal maximum earlier that day at 16:00 UTC, with an expected ZHR around 15.

For U.S. observers, those UTC times do not justify one static local peak clock time. The practical plan is to check the late-night and predawn windows spanning November 16-18, then choose the clearest, darkest period when the radiant is useful.

On November 17, 2026, the 23:45 UTC regular maximum corresponds to 6:45 p.m. Eastern, 5:45 p.m. Central, 4:45 p.m. Mountain, and 3:45 p.m. Pacific. The separate 16:00 UTC calculation corresponds to 11:00 a.m. Eastern, 10:00 a.m. Central, 9:00 a.m. Mountain, and 8:00 a.m. Pacific.

Both formal calculations occur before the most useful late-night and predawn U.S. observing window. Do not treat a converted clock time as a guaranteed best local view; choose the darkest clear period after midnight when the radiant is useful, then check local Moon position and clouds.

IMO lists several modeled encounters from November 17 through November 19. The source describes them as weak, low level or very weak. It explicitly says the modeled trails are not dense enough for significant outburst activity, although a modest increase may be possible.

This is useful context for careful observers, but it is not storm evidence. Treat the weak trail crossings as secondary opportunities, not as promised countdown events.

The Leonids' storm history does not mean a storm is expected in 2026.

Storms occur when Earth crosses unusually dense parts of the debris stream from Comet 55P/Tempel-Tuttle. The comet's next perihelion is expected in 2031, but even a comet return does not guarantee a storm. IMO's 2026 models point to low-density encounters, not a major event.

IMO states that Moonlight should not disturb near-maximum Leonid observations in 2026. AMS presents the peak-night Moon as partially illuminated, but illumination alone does not describe interference. Moon altitude, timing and direction determine how much of the useful observing window is affected.

Check local Moon timing before choosing the observing window. The source-safe conclusion is that IMO expects no material near-maximum Moon disturbance.

The Leonid radiant in Leo rises later in the night, so useful observing generally improves after midnight and toward dawn. There is no universal local hour; latitude, timezone, Moon position, twilight and weather all change the best window.

Choose a broad, open view of the sky. Leo identifies the radiant, but meteors can appear across the sky. Watching directly at the radiant shortens the apparent paths.

IMO lists a normal ZHR near 15. NASA's current 2026 Leonids page describes observed dark-sky rates as fewer than three meteors per hour. These figures are not directly interchangeable: ZHR is standardized, while NASA's observed-rate summary is a practical recent expectation.

The safe public conclusion is that personal counts may be low even under a clear sky. A successful session may include only a few Leonids, distinguished by their high speed and occasional persistent trains.

Storm history does not change the 2026 expectation. Check local late-night and predawn windows for clouds, Moon timing, and enough darkness for a patient normal-rate session.

This page does not assess routes, access, distance, or whether another place would be better.

• Expecting storm rates
• Treating weak modeled encounters as a promised outburst
• Observing before the radiant is useful and leaving early
• Clouds, smoke or direct artificial light
• Converting ZHR into a guaranteed personal count
• Driving to a dark location with worse weather or uncertain access

Check local late-night and predawn conditions around November 17. Save the event and recheck the regular maximum and low-density trail dates as they enter the supported forecast horizon.

The modeled trail encounters are weak and do not support an outburst promise. Local Moon timing, clouds and observed counts require location-specific data.

• International Meteor Organization 2026 Meteor Shower Calendar - Activity, regular maximum, rate, velocity, Moon conditions, weak trail encounters and no significant outburst expectation.
• American Meteor Society Meteor Showers 2026-2027 - November 16-17 viewing treatment, parent body, normal rate and historical-storm context.
• NASA Leonids Meteor Shower - 2026 activity, practical rate context, speed, trains and parent body.
• NASA Meteors and Meteorites Facts - General shower mechanism and Tempel-Tuttle association.