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Tomales Bay in November 2026: darkest nights

Night kayak tours from Marshall and Inverness. Fog helps; moonlight hurts. Late summer to early autumn.

16 pitch-dark nights, 18 dark nights

New moon Sun 8 Nov · Full moon Tue 24 Nov

Night by night, November 2026

NightMoon20:0021:30Best
Sun 1 Nov 46%●●●●●●●●●●20:00
Mon 2 Nov 35%●●●●●●●●●●20:00
Tue 3 Nov 24%●●●●●●●●●●20:00
Wed 4 Nov 15%●●●●●●●●●●20:00
Thu 5 Nov 9%●●●●●●●●●●20:00
Fri 6 Nov 4%●●●●●●●●●●20:00
Sat 7 Nov 1%●●●●●●●●●●20:00
Sun 8 Nov 0%●●●●●●●●●●20:00
Mon 9 Nov 1%●●●●●●●●●●20:00
Tue 10 Nov 4%●●●●●●●●●●20:00
Wed 11 Nov 9%●●●●●●●●●●20:00
Thu 12 Nov 15%●●●●●●●●●●20:00
Fri 13 Nov 22%●●●●●●●●●●21:30
Sat 14 Nov 30%●●●●●●●●●●21:30
Sun 15 Nov 39%●●●●●●●●●●21:30
Mon 16 Nov 49%●●●●●●●●●●21:30
Tue 17 Nov 59%●●●●●●●●●●21:30
Wed 18 Nov 69%●●●●●●●●●●21:30
Thu 19 Nov 78%●●●●●●●●●●20:00
Fri 20 Nov 86%●●●●●●●●●●20:00
Sat 21 Nov 93%●●●●●●●●●●20:00
Sun 22 Nov 97%●●●●●●●●●●20:00
Mon 23 Nov 100%●●●●●●●●●●20:00
Tue 24 Nov 99%●●●●●●●●●●20:00
Wed 25 Nov 96%●●●●●●●●●●20:00
Thu 26 Nov 91%●●●●●●●●●●20:00
Fri 27 Nov 83%●●●●●●●●●●20:00
Sat 28 Nov 73%●●●●●●●●●●20:00
Sun 29 Nov 62%●●●●●●●●●●20:00
Mon 30 Nov 51%●●●●●●●●●●20:00

Check one night in detail Tomales Bay tours

Questions

What are the best nights to see the bioluminescence at Tomales Bay in November 2026?

The darkest nights are Sun 1 Nov, Mon 2 Nov, Tue 3 Nov, Wed 4 Nov, Thu 5 Nov, Fri 6 Nov, Sat 7 Nov, Sun 8 Nov, Mon 9 Nov, Tue 10 Nov and more. 18 of 30 nights score at least 4 out of 5.

Which nights should I avoid in November 2026?

Avoid the nights around the full moon on Tue 24 Nov, when moonlight washes out the glow.

20:00 or 21:30: which Tomales Bay tour is darker in November?

20:00 is the darker choice on 16 nights; 21:30 is the darker choice on 4 nights.

Tomales Bay darkness by month

Darkness score 1-5 per tour slot from twilight and moonlight. Weather and plankton health are not included. Times are local (America/Los_Angeles).