La Parguera (Bahía Fosforescente) in August 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 Mon 2 Aug, Tue 31 Aug · Full moon Tue 17 Aug
Night by night, August 2027
| Night | Moon | 19:00 | 21:00 | Best |
|---|---|---|---|---|
| Sun 1 Aug | 0% | ●●●●● | ●●●●● | 21:00 |
| Mon 2 Aug | 1% | ●●●●● | ●●●●● | 21:00 |
| Tue 3 Aug | 4% | ●●●●● | ●●●●● | 21:00 |
| Wed 4 Aug | 10% | ●●●●● | ●●●●● | 21:00 |
| Thu 5 Aug | 18% | ●●●●● | ●●●●● | 21:00 |
| Fri 6 Aug | 28% | ●●●●● | ●●●●● | 21:00 |
| Sat 7 Aug | 38% | ●●●●● | ●●●●● | 21:00 |
| Sun 8 Aug | 49% | ●●●●● | ●●●●● | 21:00 |
| Mon 9 Aug | 59% | ●●●●● | ●●●●● | 21:00 |
| Tue 10 Aug | 69% | ●●●●● | ●●●●● | 21:00 |
| Wed 11 Aug | 78% | ●●●●● | ●●●●● | 21:00 |
| Thu 12 Aug | 85% | ●●●●● | ●●●●● | 21:00 |
| Fri 13 Aug | 91% | ●●●●● | ●●●●● | 21:00 |
| Sat 14 Aug | 96% | ●●●●● | ●●●●● | 21:00 |
| Sun 15 Aug | 99% | ●●●●● | ●●●●● | 19:00 |
| Mon 16 Aug | 100% | ●●●●● | ●●●●● | 19:00 |
| Tue 17 Aug | 99% | ●●●●● | ●●●●● | 19:00 |
| Wed 18 Aug | 97% | ●●●●● | ●●●●● | 19:00 |
| Thu 19 Aug | 93% | ●●●●● | ●●●●● | 19:00 |
| Fri 20 Aug | 87% | ●●●●● | ●●●●● | 19:00 |
| Sat 21 Aug | 79% | ●●●●● | ●●●●● | 21:00 |
| Sun 22 Aug | 70% | ●●●●● | ●●●●● | 21:00 |
| Mon 23 Aug | 59% | ●●●●● | ●●●●● | 21:00 |
| Tue 24 Aug | 48% | ●●●●● | ●●●●● | 21:00 |
| Wed 25 Aug | 37% | ●●●●● | ●●●●● | 21:00 |
| Thu 26 Aug | 26% | ●●●●● | ●●●●● | 21:00 |
| Fri 27 Aug | 17% | ●●●●● | ●●●●● | 21:00 |
| Sat 28 Aug | 9% | ●●●●● | ●●●●● | 21:00 |
| Sun 29 Aug | 3% | ●●●●● | ●●●●● | 21:00 |
| Mon 30 Aug | 0% | ●●●●● | ●●●●● | 21:00 |
| Tue 31 Aug | 0% | ●●●●● | ●●●●● | 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 August 2027?
The darkest nights are Sun 1 Aug, Mon 2 Aug, Tue 3 Aug, Wed 4 Aug, Thu 5 Aug, Mon 23 Aug, Tue 24 Aug, Wed 25 Aug, Thu 26 Aug, Fri 27 Aug and more. 16 of 31 nights score at least 4 out of 5.
Which nights should I avoid in August 2027?
Avoid the nights around the full moon on Tue 17 Aug, when moonlight washes out the glow.
19:00 or 21:00: which La Parguera (Bahía Fosforescente) tour is darker in August?
19:00 is the darker choice on 0 nights; 21:00 is the darker choice on 18 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).