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Laguna Grande in January 2027: darkest nights

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

17 pitch-dark nights, 19 dark nights

New moon Thu 7 Jan · Full moon Fri 22 Jan

Night by night, January 2027

NightMoon18:3020:30Best
Fri 1 Jan 27%●●●●●●●●●●20:30
Sat 2 Jan 19%●●●●●●●●●●20:30
Sun 3 Jan 12%●●●●●●●●●●20:30
Mon 4 Jan 7%●●●●●●●●●●20:30
Tue 5 Jan 3%●●●●●●●●●●20:30
Wed 6 Jan 1%●●●●●●●●●●20:30
Thu 7 Jan 0%●●●●●●●●●●20:30
Fri 8 Jan 1%●●●●●●●●●●20:30
Sat 9 Jan 5%●●●●●●●●●●20:30
Sun 10 Jan 10%●●●●●●●●●●20:30
Mon 11 Jan 16%●●●●●●●●●●20:30
Tue 12 Jan 24%●●●●●●●●●●20:30
Wed 13 Jan 34%●●●●●●●●●●20:30
Thu 14 Jan 44%●●●●●●●●●●20:30
Fri 15 Jan 55%●●●●●●●●●●20:30
Sat 16 Jan 66%●●●●●●●●●●20:30
Sun 17 Jan 76%●●●●●●●●●●20:30
Mon 18 Jan 85%●●●●●●●●●●20:30
Tue 19 Jan 93%●●●●●●●●●●20:30
Wed 20 Jan 98%●●●●●●●●●●20:30
Thu 21 Jan 100%●●●●●●●●●●18:30
Fri 22 Jan 99%●●●●●●●●●●18:30
Sat 23 Jan 96%●●●●●●●●●●18:30
Sun 24 Jan 91%●●●●●●●●●●18:30
Mon 25 Jan 83%●●●●●●●●●●20:30
Tue 26 Jan 74%●●●●●●●●●●20:30
Wed 27 Jan 64%●●●●●●●●●●20:30
Thu 28 Jan 54%●●●●●●●●●●20:30
Fri 29 Jan 44%●●●●●●●●●●20:30
Sat 30 Jan 34%●●●●●●●●●●20:30
Sun 31 Jan 25%●●●●●●●●●●20:30

Check one night in detail Laguna Grande tours

Questions

What are the best nights to see the bioluminescence at Laguna Grande in January 2027?

The darkest nights are Fri 1 Jan, Sat 2 Jan, Sun 3 Jan, Mon 4 Jan, Tue 5 Jan, Wed 6 Jan, Thu 7 Jan, Fri 8 Jan, Sat 9 Jan, Sun 10 Jan and more. 19 of 31 nights score at least 4 out of 5.

Which nights should I avoid in January 2027?

Avoid the nights around the full moon on Fri 22 Jan, when moonlight washes out the glow.

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

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