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Jervis Bay in December 2026: darkest nights

Noctiluca blooms turn Hyams Beach and Callala Bay electric blue. Blooms are short-lived. Sporadic blooms, mostly late spring and summer.

16 pitch-dark nights, 18 dark nights

New moon Wed 9 Dec · Full moon Thu 24 Dec

Night by night, December 2026

NightMoon21:0023:00Best
Tue 1 Dec 48%●●●●●●●●●●23:00
Wed 2 Dec 37%●●●●●●●●●●23:00
Thu 3 Dec 27%●●●●●●●●●●23:00
Fri 4 Dec 18%●●●●●●●●●●23:00
Sat 5 Dec 11%●●●●●●●●●●23:00
Sun 6 Dec 6%●●●●●●●●●●23:00
Mon 7 Dec 2%●●●●●●●●●●23:00
Tue 8 Dec 0%●●●●●●●●●●23:00
Wed 9 Dec 0%●●●●●●●●●●23:00
Thu 10 Dec 2%●●●●●●●●●●23:00
Fri 11 Dec 6%●●●●●●●●●●23:00
Sat 12 Dec 11%●●●●●●●●●●23:00
Sun 13 Dec 17%●●●●●●●●●●23:00
Mon 14 Dec 25%●●●●●●●●●●23:00
Tue 15 Dec 34%●●●●●●●●●●23:00
Wed 16 Dec 44%●●●●●●●●●●23:00
Thu 17 Dec 54%●●●●●●●●●●23:00
Fri 18 Dec 65%●●●●●●●●●●23:00
Sat 19 Dec 75%●●●●●●●●●●23:00
Sun 20 Dec 84%●●●●●●●●●●23:00
Mon 21 Dec 91%●●●●●●●●●●23:00
Tue 22 Dec 97%●●●●●●●●●●23:00
Wed 23 Dec 99%●●●●●●●●●●21:00
Thu 24 Dec 100%●●●●●●●●●●21:00
Fri 25 Dec 97%●●●●●●●●●●21:00
Sat 26 Dec 92%●●●●●●●●●●21:00
Sun 27 Dec 84%●●●●●●●●●●21:00
Mon 28 Dec 75%●●●●●●●●●●21:00
Tue 29 Dec 65%●●●●●●●●●●23:00
Wed 30 Dec 54%●●●●●●●●●●23:00
Thu 31 Dec 43%●●●●●●●●●●23:00

Check one night in detail Jervis Bay tours

Questions

What are the best nights to see the bioluminescence at Jervis Bay in December 2026?

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

Which nights should I avoid in December 2026?

Avoid the nights around the full moon on Thu 24 Dec, when moonlight washes out the glow.

21:00 or 23:00: which Jervis Bay tour is darker in December?

21:00 is the darker choice on 3 nights; 23:00 is the darker choice on 20 nights.

Jervis 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 (Australia/Sydney).