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Mosquito Bay in March 2027: darkest nights

Guinness-listed as the brightest bioluminescent bay in the world. Swimming is banned; tours use clear-bottom kayaks or electric boats. Year-round. Brightest after a few dry, calm nights.

17 pitch-dark nights, 18 dark nights

New moon Mon 8 Mar · Full moon Mon 22 Mar

Night by night, March 2027

NightMoon19:0021:00Best
Mon 1 Mar 32%●●●●●●●●●●21:00
Tue 2 Mar 24%●●●●●●●●●●21:00
Wed 3 Mar 16%●●●●●●●●●●21:00
Thu 4 Mar 10%●●●●●●●●●●21:00
Fri 5 Mar 5%●●●●●●●●●●21:00
Sat 6 Mar 2%●●●●●●●●●●21:00
Sun 7 Mar 0%●●●●●●●●●●21:00
Mon 8 Mar 1%●●●●●●●●●●21:00
Tue 9 Mar 3%●●●●●●●●●●21:00
Wed 10 Mar 8%●●●●●●●●●●21:00
Thu 11 Mar 15%●●●●●●●●●●21:00
Fri 12 Mar 23%●●●●●●●●●●21:00
Sat 13 Mar 34%●●●●●●●●●●21:00
Sun 14 Mar 45%●●●●●●●●●●21:00
Mon 15 Mar 57%●●●●●●●●●●21:00
Tue 16 Mar 68%●●●●●●●●●●21:00
Wed 17 Mar 79%●●●●●●●●●●21:00
Thu 18 Mar 87%●●●●●●●●●●21:00
Fri 19 Mar 94%●●●●●●●●●●21:00
Sat 20 Mar 98%●●●●●●●●●●19:00
Sun 21 Mar 100%●●●●●●●●●●19:00
Mon 22 Mar 99%●●●●●●●●●●19:00
Tue 23 Mar 96%●●●●●●●●●●19:00
Wed 24 Mar 91%●●●●●●●●●●19:00
Thu 25 Mar 84%●●●●●●●●●●19:00
Fri 26 Mar 76%●●●●●●●●●●21:00
Sat 27 Mar 68%●●●●●●●●●●21:00
Sun 28 Mar 58%●●●●●●●●●●21:00
Mon 29 Mar 49%●●●●●●●●●●21:00
Tue 30 Mar 40%●●●●●●●●●●21:00
Wed 31 Mar 31%●●●●●●●●●●21:00

Check one night in detail Mosquito Bay tours

Questions

What are the best nights to see the bioluminescence at Mosquito Bay in March 2027?

The darkest nights are Mon 1 Mar, Tue 2 Mar, Wed 3 Mar, Thu 4 Mar, Fri 5 Mar, Sat 6 Mar, Sun 7 Mar, Mon 8 Mar, Tue 9 Mar, Wed 10 Mar and more. 18 of 31 nights score at least 4 out of 5.

Which nights should I avoid in March 2027?

Avoid the nights around the full moon on Mon 22 Mar, when moonlight washes out the glow.

19:00 or 21:00: which Mosquito Bay tour is darker in March?

19:00 is the darker choice on 2 nights; 21:00 is the darker choice on 19 nights.

Mosquito 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/Puerto_Rico).