Toyama Bay firefly squid in January 2027: darkest nights
Firefly squid (hotaru-ika) glow as fishermen haul nets before dawn. Sightseeing boats leave around 3 am. March to May only.
15 pitch-dark nights, 17 dark nights
New moon Fri 8 Jan · Full moon Fri 22 Jan
Night by night, January 2027
| Night | Moon | 03:00 | Best |
|---|---|---|---|
| Fri 1 Jan | 32% | ●●●●● | 03:00 |
| Sat 2 Jan | 23% | ●●●●● | 03:00 |
| Sun 3 Jan | 15% | ●●●●● | 03:00 |
| Mon 4 Jan | 9% | ●●●●● | 03:00 |
| Tue 5 Jan | 4% | ●●●●● | 03:00 |
| Wed 6 Jan | 1% | ●●●●● | 03:00 |
| Thu 7 Jan | 0% | ●●●●● | 03:00 |
| Fri 8 Jan | 1% | ●●●●● | 03:00 |
| Sat 9 Jan | 3% | ●●●●● | 03:00 |
| Sun 10 Jan | 7% | ●●●●● | 03:00 |
| Mon 11 Jan | 13% | ●●●●● | 03:00 |
| Tue 12 Jan | 20% | ●●●●● | 03:00 |
| Wed 13 Jan | 29% | ●●●●● | 03:00 |
| Thu 14 Jan | 39% | ●●●●● | 03:00 |
| Fri 15 Jan | 49% | ●●●●● | 03:00 |
| Sat 16 Jan | 60% | ●●●●● | 03:00 |
| Sun 17 Jan | 71% | ●●●●● | 03:00 |
| Mon 18 Jan | 81% | ●●●●● | 03:00 |
| Tue 19 Jan | 89% | ●●●●● | 03:00 |
| Wed 20 Jan | 95% | ●●●●● | 03:00 |
| Thu 21 Jan | 99% | ●●●●● | 03:00 |
| Fri 22 Jan | 100% | ●●●●● | 03:00 |
| Sat 23 Jan | 98% | ●●●●● | 03:00 |
| Sun 24 Jan | 94% | ●●●●● | 03:00 |
| Mon 25 Jan | 87% | ●●●●● | 03:00 |
| Tue 26 Jan | 79% | ●●●●● | 03:00 |
| Wed 27 Jan | 69% | ●●●●● | 03:00 |
| Thu 28 Jan | 59% | ●●●●● | 03:00 |
| Fri 29 Jan | 49% | ●●●●● | 03:00 |
| Sat 30 Jan | 39% | ●●●●● | 03:00 |
| Sun 31 Jan | 30% | ●●●●● | 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 January 2027?
The darkest nights are Sun 3 Jan, Mon 4 Jan, Tue 5 Jan, Wed 6 Jan, Thu 7 Jan, Fri 8 Jan, Sat 9 Jan, Sun 10 Jan, Mon 11 Jan, Tue 12 Jan and more. 17 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.
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).