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

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

14 pitch-dark nights, 16 dark nights

New moon Sat 3 Jul · Full moon Sun 18 Jul

Night by night, July 2027

NightMoon19:0021:00Best
Thu 1 Jul 6%●●●●●●●●●●21:00
Fri 2 Jul 1%●●●●●●●●●●21:00
Sat 3 Jul 0%●●●●●●●●●●21:00
Sun 4 Jul 1%●●●●●●●●●●21:00
Mon 5 Jul 6%●●●●●●●●●●21:00
Tue 6 Jul 12%●●●●●●●●●●21:00
Wed 7 Jul 21%●●●●●●●●●●21:00
Thu 8 Jul 31%●●●●●●●●●●21:00
Fri 9 Jul 42%●●●●●●●●●●21:00
Sat 10 Jul 53%●●●●●●●●●●21:00
Sun 11 Jul 64%●●●●●●●●●●21:00
Mon 12 Jul 74%●●●●●●●●●●21:00
Tue 13 Jul 82%●●●●●●●●●●21:00
Wed 14 Jul 89%●●●●●●●●●●21:00
Thu 15 Jul 94%●●●●●●●●●●21:00
Fri 16 Jul 98%●●●●●●●●●●19:00
Sat 17 Jul 100%●●●●●●●●●●19:00
Sun 18 Jul 100%●●●●●●●●●●19:00
Mon 19 Jul 98%●●●●●●●●●●21:00
Tue 20 Jul 94%●●●●●●●●●●19:00
Wed 21 Jul 89%●●●●●●●●●●21:00
Thu 22 Jul 83%●●●●●●●●●●21:00
Fri 23 Jul 74%●●●●●●●●●●21:00
Sat 24 Jul 65%●●●●●●●●●●21:00
Sun 25 Jul 55%●●●●●●●●●●21:00
Mon 26 Jul 44%●●●●●●●●●●21:00
Tue 27 Jul 33%●●●●●●●●●●21:00
Wed 28 Jul 23%●●●●●●●●●●21:00
Thu 29 Jul 14%●●●●●●●●●●21:00
Fri 30 Jul 7%●●●●●●●●●●21:00
Sat 31 Jul 2%●●●●●●●●●●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 July 2027?

The darkest nights are Thu 1 Jul, Fri 2 Jul, Sat 3 Jul, Sun 4 Jul, Mon 5 Jul, Tue 6 Jul, Sat 24 Jul, Sun 25 Jul, Mon 26 Jul, Tue 27 Jul and more. 16 of 31 nights score at least 4 out of 5.

Which nights should I avoid in July 2027?

Avoid the nights around the full moon on Sun 18 Jul, when moonlight washes out the glow.

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

19:00 is the darker choice on 0 nights; 21:00 is the darker choice on 19 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).