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La Parguera (Bahía Fosforescente) in October 2027: darkest nights

The only Puerto Rico bio bay where swimming is still allowed on some boat tours. Year-round.

17 pitch-dark nights, 18 dark nights

New moon Fri 29 Oct · Full moon Fri 15 Oct

Night by night, October 2027

NightMoon19:0021:00Best
Fri 1 Oct 6%●●●●●●●●●●21:00
Sat 2 Oct 12%●●●●●●●●●●21:00
Sun 3 Oct 19%●●●●●●●●●●21:00
Mon 4 Oct 28%●●●●●●●●●●21:00
Tue 5 Oct 37%●●●●●●●●●●21:00
Wed 6 Oct 47%●●●●●●●●●●21:00
Thu 7 Oct 56%●●●●●●●●●●21:00
Fri 8 Oct 65%●●●●●●●●●●21:00
Sat 9 Oct 74%●●●●●●●●●●21:00
Sun 10 Oct 82%●●●●●●●●●●21:00
Mon 11 Oct 88%●●●●●●●●●●21:00
Tue 12 Oct 94%●●●●●●●●●●21:00
Wed 13 Oct 98%●●●●●●●●●●19:00
Thu 14 Oct 100%●●●●●●●●●●19:00
Fri 15 Oct 100%●●●●●●●●●●19:00
Sat 16 Oct 97%●●●●●●●●●●19:00
Sun 17 Oct 93%●●●●●●●●●●19:00
Mon 18 Oct 87%●●●●●●●●●●19:00
Tue 19 Oct 78%●●●●●●●●●●19:00
Wed 20 Oct 68%●●●●●●●●●●19:00
Thu 21 Oct 57%●●●●●●●●●●21:00
Fri 22 Oct 45%●●●●●●●●●●21:00
Sat 23 Oct 33%●●●●●●●●●●21:00
Sun 24 Oct 23%●●●●●●●●●●21:00
Mon 25 Oct 14%●●●●●●●●●●21:00
Tue 26 Oct 7%●●●●●●●●●●21:00
Wed 27 Oct 2%●●●●●●●●●●21:00
Thu 28 Oct 0%●●●●●●●●●●21:00
Fri 29 Oct 1%●●●●●●●●●●21:00
Sat 30 Oct 3%●●●●●●●●●●21:00
Sun 31 Oct 8%●●●●●●●●●●21:00

Check one night in detail La Parguera (Bahía Fosforescente) tours

Questions

What are the best nights to see the bioluminescence at La Parguera (Bahía Fosforescente) in October 2027?

The darkest nights are Fri 1 Oct, Sat 2 Oct, Sun 3 Oct, Mon 4 Oct, Tue 19 Oct, Wed 20 Oct, Thu 21 Oct, Fri 22 Oct, Sat 23 Oct, Sun 24 Oct and more. 18 of 31 nights score at least 4 out of 5.

Which nights should I avoid in October 2027?

Avoid the nights around the full moon on Fri 15 Oct, when moonlight washes out the glow.

19:00 or 21:00: which La Parguera (Bahía Fosforescente) tour is darker in October?

19:00 is the darker choice on 3 nights; 21:00 is the darker choice on 17 nights.

La Parguera (Bahía Fosforescente) 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/Puerto_Rico).