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Seasonal calendar
Destinations grouped by expected peak month. Biological and atmospheric windows shift with live temperature accumulation (GDD base 5°C) and geomagnetic activity; out-of-season windows are labelled as historical estimates.
3 destinations
Volcanic & Geothermal Landscapes
Peak window: 13 Jan 2027 – 6 Feb 2027
9 destinations
4 destinations
5 destinations
Synchronous Fireflies
Peak window: 16 May 2027 – 24 May 2027
Snowmelt Waterfalls & River Peak Flow
Peak window: 20 May 2027 – 5 Jun 2027
Synchronous Fireflies
Peak window: 31 May 2027 – 8 Jun 2027
3 destinations
Snowmelt Waterfalls & River Peak Flow
Peak window: 10 Jun 2027 – 26 Jun 2027
Synchronous Fireflies
Peak window: 12 Jun 2027 – 20 Jun 2027
Snowmelt Waterfalls & River Peak Flow
Peak window: 20 Jun 2027 – 6 Jul 2027
13 destinations
Marine Bioluminescence
Peak window: 2 Jul 2026 – 28 Jul 2026
Whale Migration & Coastal Sightings
Peak window: 4 Jul 2027 – 26 Jul 2027
6 destinations
Whale Migration & Coastal Sightings
Peak window: 20 Aug 2026 – 11 Sept 2026
Whale Migration & Coastal Sightings
Peak window: 25 Aug 2026 – 16 Sept 2026
Marine Bioluminescence
Peak window: 12 Aug 2027 – 7 Sept 2027
Whale Migration & Coastal Sightings
Peak window: 25 Aug 2027 – 16 Sept 2027
4 destinations
8 destinations
Volcanic & Geothermal Landscapes
Peak window: 10 Oct 2026 – 3 Nov 2026
Meteor Showers
Peak window: 18 Oct 2027 – 24 Oct 2027
4 destinations
Volcanic & Geothermal Landscapes
Peak window: 23 Nov 2026 – 17 Dec 2026
2 destinations
Snowmelt Waterfalls & River Peak Flow
Peak window: 28 Dec 2026 – 13 Jan 2027