Mosquito Bay in April 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.
15 pitch-dark nights, 17 dark nights
New moon Tue 6 Apr · Full moon Tue 20 Apr
Night by night, April 2027
| Night | Moon | 19:00 | 21:00 | Best |
|---|---|---|---|---|
| Thu 1 Apr | 22% | ●●●●● | ●●●●● | 21:00 |
| Fri 2 Apr | 15% | ●●●●● | ●●●●● | 21:00 |
| Sat 3 Apr | 9% | ●●●●● | ●●●●● | 21:00 |
| Sun 4 Apr | 4% | ●●●●● | ●●●●● | 21:00 |
| Mon 5 Apr | 1% | ●●●●● | ●●●●● | 21:00 |
| Tue 6 Apr | 0% | ●●●●● | ●●●●● | 21:00 |
| Wed 7 Apr | 2% | ●●●●● | ●●●●● | 21:00 |
| Thu 8 Apr | 6% | ●●●●● | ●●●●● | 21:00 |
| Fri 9 Apr | 12% | ●●●●● | ●●●●● | 21:00 |
| Sat 10 Apr | 20% | ●●●●● | ●●●●● | 21:00 |
| Sun 11 Apr | 30% | ●●●●● | ●●●●● | 21:00 |
| Mon 12 Apr | 41% | ●●●●● | ●●●●● | 21:00 |
| Tue 13 Apr | 53% | ●●●●● | ●●●●● | 21:00 |
| Wed 14 Apr | 65% | ●●●●● | ●●●●● | 21:00 |
| Thu 15 Apr | 76% | ●●●●● | ●●●●● | 21:00 |
| Fri 16 Apr | 85% | ●●●●● | ●●●●● | 21:00 |
| Sat 17 Apr | 92% | ●●●●● | ●●●●● | 21:00 |
| Sun 18 Apr | 97% | ●●●●● | ●●●●● | 21:00 |
| Mon 19 Apr | 99% | ●●●●● | ●●●●● | 19:00 |
| Tue 20 Apr | 100% | ●●●●● | ●●●●● | 19:00 |
| Wed 21 Apr | 98% | ●●●●● | ●●●●● | 19:00 |
| Thu 22 Apr | 94% | ●●●●● | ●●●●● | 19:00 |
| Fri 23 Apr | 88% | ●●●●● | ●●●●● | 21:00 |
| Sat 24 Apr | 82% | ●●●●● | ●●●●● | 21:00 |
| Sun 25 Apr | 74% | ●●●●● | ●●●●● | 21:00 |
| Mon 26 Apr | 65% | ●●●●● | ●●●●● | 21:00 |
| Tue 27 Apr | 56% | ●●●●● | ●●●●● | 21:00 |
| Wed 28 Apr | 47% | ●●●●● | ●●●●● | 21:00 |
| Thu 29 Apr | 37% | ●●●●● | ●●●●● | 21:00 |
| Fri 30 Apr | 28% | ●●●●● | ●●●●● | 21:00 |
Check one night in detail Mosquito Bay tours
Questions
What are the best nights to see the bioluminescence at Mosquito Bay in April 2027?
The darkest nights are Thu 1 Apr, Fri 2 Apr, Sat 3 Apr, Sun 4 Apr, Mon 5 Apr, Tue 6 Apr, Wed 7 Apr, Thu 8 Apr, Fri 9 Apr, Sun 25 Apr and more. 17 of 30 nights score at least 4 out of 5.
Which nights should I avoid in April 2027?
Avoid the nights around the full moon on Tue 20 Apr, when moonlight washes out the glow.
19:00 or 21:00: which Mosquito Bay tour is darker in April?
19:00 is the darker choice on 1 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).