Light on 15 September

Clear sky

Light through the day, 15 September, local time, America/Boise
From	To	Light
00:00	06:44	Night
06:44	07:07	Blue hour
07:07	07:40	Golden hour
07:40	08:59	Soft
08:59	11:54	Medium
11:54	14:41	Harsh
14:41	17:36	Medium
17:36	18:55	Soft
18:55	19:28	Golden hour
19:28	19:50	Blue hour
19:50	24:00	Night

3.7 hours of golden and soft light.

Soft light by month

Hours a day

Soft light by month, hours a day, under a clear sky
Month	Golden hour	Soft
Jan	1.3 h	3.9 h
Feb	1.2 h	3.1 h
Mar	1.1 h	2.7 h
Apr	1.1 h	2.6 h
May	1.2 h	2.7 h
Jun	1.3 h	2.8 h
Jul	1.2 h	2.7 h
Aug	1.2 h	2.6 h
Sep	1.1 h	2.6 h
Oct	1.2 h	2.9 h
Nov	1.3 h	3.6 h
Dec	1.4 h	4.4 h

What's here, and when

1 subject

Shooting windows in Grand Teton National Park: subjects down, months across
Subject	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Moose	Outside the window	Outside the window	Outside the window	Outside the window	Outside the window	Outside the window	Outside the window	Outside the window	Peak	Peak	Outside the window	Outside the window

Hides, lodges and tours (0)

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Moose — Grand Teton Gros Ventre River & Moose Wilson corridor — late September to mid October rut

Shoot window

Moose

Moose: you will probably see it (Sep–Oct)

Moose by month
Month	Presence
Jan	Outside the window
Feb	Outside the window
Mar	Outside the window
Apr	Outside the window
May	Outside the window
Jun	Outside the window
Jul	Outside the window
Aug	Outside the window
Sep	Peak
Oct	Peak
Nov	Outside the window
Dec	Outside the window

Peak: Last week of September to mid October. NPS: moose mate late September and early October. Cottonwood colour peak not verified from a primary source.
Days needed: 7 days
Behaviour: Rut, Territorial fighting, Courtship / display
Coat: Hard antlers
Habitat: Autumn colour, Wetland / water
Crowds: Crowded — vehicles in frame
Also here: Elk rut (bugling bulls on Antelope Flats and Timbered Island), bison, pronghorn, black and grizzly bears around Oxbow Bend and Pilgrim Creek, trumpeter swans, Teton landscapes.

Light: 43.6°N. Max solar altitude 45° on Sep 25, 40° on Oct 10 (computed); sun under 15° only about 3 h a day in total. Jackson has clear or partly cloudy skies 69% of the time in Sep and 59% in Oct (WeatherSpark), so overcast is only 31 to 41%. Usable soft light: about 3 to 4 h a day on clear days (roughly 90 min after sunrise, 90 min before sunset), all day on the minority of overcast days. Midday is written off on clear days. Inference, not verified: the Tetons to the west put the western valley in shade early in the evening, so evening work is better on the east side (Gros Ventre). Roads open to vehicles until Nov 1.
Weather risk: Wildfire smoke and Fog / mist (asset)
Atmosphere: Morning river fog and frost on the Gros Ventre, breath vapour, backlit mist with the sun rising over the Gros Ventre Range.
Permits: Entrance fee. Minimum 25 yards from moose; rangers recommend 100 yards from bulls during the rut and have cited photographers, including with plain clothes patrols (2014 release). Harassing or altering behaviour is prohibited at any distance. Drones prohibited. Teton Park Road and Moose Wilson Road close to vehicles Nov 1.
Getting there: Jackson Hole Airport (JAC) sits inside the park; Idaho Falls (IDA) about 2 h. Rental car. Lodging in Jackson or Kelly; Jackson prices are high in September (Fall Arts Festival mid Sep). Gros Ventre Campground closing date not checked.

Who runs trips here: Self drive. No photography specific operator verified this session.

Confidence: medium · Last verified 22 Sept 2026

Species

Moose Alces alces

Light and conditions

Loading today’s light and weather…

Light through the year

Golden hour is when the sun is low, between the horizon and 6° above it: soft, warm light. Times are for the 15th of each month, in Boise time (with summer time where it applies).

Light by month at Grand Teton National Park, in Boise time
Month	Golden hour		Daylight	Sun at noon
Month	Morning golden hour	Evening golden hour	Daylight	Sun at noon
Jan	07:59–08:39	16:26–17:06	9h 18m9 h 18 min	25°
Feb	07:26–08:02	17:12–17:48	10h 32m10 h 32 min	34°
Mar	07:39–08:13	18:51–19:24	11h 55m11 h 55 min	44°
Apr	06:44–07:18	19:28–20:02	13h 27m13 h 27 min	56°
May	06:02–06:38	20:00–20:36	14h 45m14 h 45 min	65°
Jun	05:45–06:24	20:23–21:01	15h 27m15 h 27 min	70°
Jul	06:00–06:37	20:19–20:57	15h 8m15 h 8 min	68°
Aug	06:32–07:07	19:47–20:21	13h 59m13 h 59 min	60°
Sep	07:07–07:40	18:55–19:28	12h 31m12 h 31 min	49°
Oct	07:42–08:16	18:00–18:34	11h 2m11 h 2 min	38°
Nov	07:22–08:01	16:13–16:52	9h 39m9 h 39 min	28°
Dec	07:55–08:37	15:59–16:40	8h 56m8 h 56 min	23°