Toyama Bay firefly squid in July 2027: darkest nights
Firefly squid (hotaru-ika) glow as fishermen haul nets before dawn. Sightseeing boats leave around 3 am. March to May only.
0 pitch-dark nights, 0 dark nights
New moon Sun 4 Jul · Full moon Mon 19 Jul
Night by night, July 2027
| Night | Moon | 03:00 | Best |
|---|---|---|---|
| Thu 1 Jul | 9% | ●●●●● | 03:00 |
| Fri 2 Jul | 3% | ●●●●● | 03:00 |
| Sat 3 Jul | 0% | ●●●●● | 03:00 |
| Sun 4 Jul | 0% | ●●●●● | 03:00 |
| Mon 5 Jul | 3% | ●●●●● | 03:00 |
| Tue 6 Jul | 8% | ●●●●● | 03:00 |
| Wed 7 Jul | 16% | ●●●●● | 03:00 |
| Thu 8 Jul | 26% | ●●●●● | 03:00 |
| Fri 9 Jul | 36% | ●●●●● | 03:00 |
| Sat 10 Jul | 47% | ●●●●● | 03:00 |
| Sun 11 Jul | 58% | ●●●●● | 03:00 |
| Mon 12 Jul | 69% | ●●●●● | 03:00 |
| Tue 13 Jul | 78% | ●●●●● | 03:00 |
| Wed 14 Jul | 86% | ●●●●● | 03:00 |
| Thu 15 Jul | 92% | ●●●●● | 03:00 |
| Fri 16 Jul | 96% | ●●●●● | 03:00 |
| Sat 17 Jul | 99% | ●●●●● | 03:00 |
| Sun 18 Jul | 100% | ●●●●● | 03:00 |
| Mon 19 Jul | 99% | ●●●●● | 03:00 |
| Tue 20 Jul | 97% | ●●●●● | 03:00 |
| Wed 21 Jul | 92% | ●●●●● | 03:00 |
| Thu 22 Jul | 86% | ●●●●● | 03:00 |
| Fri 23 Jul | 79% | ●●●●● | 03:00 |
| Sat 24 Jul | 70% | ●●●●● | 03:00 |
| Sun 25 Jul | 60% | ●●●●● | 03:00 |
| Mon 26 Jul | 50% | ●●●●● | 03:00 |
| Tue 27 Jul | 39% | ●●●●● | 03:00 |
| Wed 28 Jul | 29% | ●●●●● | 03:00 |
| Thu 29 Jul | 19% | ●●●●● | 03:00 |
| Fri 30 Jul | 11% | ●●●●● | 03:00 |
| Sat 31 Jul | 5% | ●●●●● | 03:00 |
Check one night in detail Toyama Bay firefly squid tours
Questions
What are the best nights to see the bioluminescence at Toyama Bay firefly squid in July 2027?
0 of 31 nights score at least 4 out of 5 for darkness.
Which nights should I avoid in July 2027?
Avoid the nights around the full moon on Mon 19 Jul, when moonlight washes out the glow.
Toyama Bay firefly squid darkness by month
Darkness score 1-5 per tour slot from twilight and moonlight. Weather and plankton health are not included. Times are local (Asia/Tokyo).