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Laguna Grande in July 2027: darkest nights

Reached by kayak through a mangrove channel. The easiest bio bay to reach from San Juan. Year-round.

15 pitch-dark nights, 17 dark nights

New moon Sat 3 Jul · Full moon Sun 18 Jul

Night by night, July 2027

NightMoon18:3020:30Best
Thu 1 Jul 6%●●●●●●●●●●20:30
Fri 2 Jul 1%●●●●●●●●●●20:30
Sat 3 Jul 0%●●●●●●●●●●20:30
Sun 4 Jul 1%●●●●●●●●●●20:30
Mon 5 Jul 6%●●●●●●●●●●20:30
Tue 6 Jul 12%●●●●●●●●●●20:30
Wed 7 Jul 21%●●●●●●●●●●20:30
Thu 8 Jul 31%●●●●●●●●●●20:30
Fri 9 Jul 42%●●●●●●●●●●20:30
Sat 10 Jul 53%●●●●●●●●●●20:30
Sun 11 Jul 64%●●●●●●●●●●20:30
Mon 12 Jul 74%●●●●●●●●●●20:30
Tue 13 Jul 82%●●●●●●●●●●20:30
Wed 14 Jul 89%●●●●●●●●●●20:30
Thu 15 Jul 94%●●●●●●●●●●20:30
Fri 16 Jul 98%●●●●●●●●●●18:30
Sat 17 Jul 100%●●●●●●●●●●18:30
Sun 18 Jul 100%●●●●●●●●●●20:30
Mon 19 Jul 98%●●●●●●●●●●20:30
Tue 20 Jul 94%●●●●●●●●●●20:30
Wed 21 Jul 89%●●●●●●●●●●20:30
Thu 22 Jul 83%●●●●●●●●●●20:30
Fri 23 Jul 74%●●●●●●●●●●20:30
Sat 24 Jul 65%●●●●●●●●●●20:30
Sun 25 Jul 55%●●●●●●●●●●20:30
Mon 26 Jul 44%●●●●●●●●●●20:30
Tue 27 Jul 33%●●●●●●●●●●20:30
Wed 28 Jul 23%●●●●●●●●●●20:30
Thu 29 Jul 14%●●●●●●●●●●20:30
Fri 30 Jul 7%●●●●●●●●●●20:30
Sat 31 Jul 2%●●●●●●●●●●20:30

Check one night in detail Laguna Grande tours

Questions

What are the best nights to see the bioluminescence at Laguna Grande 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, Fri 23 Jul, Sat 24 Jul, Sun 25 Jul, Mon 26 Jul and more. 17 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.

18:30 or 20:30: which Laguna Grande tour is darker in July?

18:30 is the darker choice on 0 nights; 20:30 is the darker choice on 19 nights.

Laguna Grande 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).