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Tomales Bay in June 2027: darkest nights

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

0 pitch-dark nights, 0 dark nights

New moon Fri 4 Jun · Full moon Fri 18 Jun

Night by night, June 2027

NightMoon20:0021:30Best
Tue 1 Jun 9%●●●●●●●●●●21:30
Wed 2 Jun 3%●●●●●●●●●●21:30
Thu 3 Jun 1%●●●●●●●●●●21:30
Fri 4 Jun 0%●●●●●●●●●●21:30
Sat 5 Jun 3%●●●●●●●●●●21:30
Sun 6 Jun 8%●●●●●●●●●●21:30
Mon 7 Jun 15%●●●●●●●●●●21:30
Tue 8 Jun 25%●●●●●●●●●●21:30
Wed 9 Jun 36%●●●●●●●●●●21:30
Thu 10 Jun 47%●●●●●●●●●●21:30
Fri 11 Jun 59%●●●●●●●●●●21:30
Sat 12 Jun 69%●●●●●●●●●●21:30
Sun 13 Jun 79%●●●●●●●●●●21:30
Mon 14 Jun 87%●●●●●●●●●●21:30
Tue 15 Jun 93%●●●●●●●●●●21:30
Wed 16 Jun 97%●●●●●●●●●●21:30
Thu 17 Jun 99%●●●●●●●●●●21:30
Fri 18 Jun 100%●●●●●●●●●●21:30
Sat 19 Jun 98%●●●●●●●●●●21:30
Sun 20 Jun 95%●●●●●●●●●●21:30
Mon 21 Jun 90%●●●●●●●●●●21:30
Tue 22 Jun 84%●●●●●●●●●●21:30
Wed 23 Jun 77%●●●●●●●●●●21:30
Thu 24 Jun 68%●●●●●●●●●●21:30
Fri 25 Jun 58%●●●●●●●●●●21:30
Sat 26 Jun 48%●●●●●●●●●●21:30
Sun 27 Jun 38%●●●●●●●●●●21:30
Mon 28 Jun 28%●●●●●●●●●●21:30
Tue 29 Jun 19%●●●●●●●●●●21:30
Wed 30 Jun 11%●●●●●●●●●●21:30

Check one night in detail Tomales Bay tours

Questions

What are the best nights to see the bioluminescence at Tomales Bay in June 2027?

0 of 30 nights score at least 4 out of 5 for darkness.

Which nights should I avoid in June 2027?

Avoid the nights around the full moon on Fri 18 Jun, when moonlight washes out the glow.

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

20:00 is the darker choice on 0 nights; 21:30 is the darker choice on 18 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).