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Jervis Bay in July 2027: darkest nights

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

17 pitch-dark nights, 18 dark nights

New moon Sun 4 Jul · Full moon Mon 19 Jul

Night by night, July 2027

NightMoon21:0023:00Best
Thu 1 Jul 9%●●●●●●●●●●21:00
Fri 2 Jul 3%●●●●●●●●●●21:00
Sat 3 Jul 0%●●●●●●●●●●21:00
Sun 4 Jul 0%●●●●●●●●●●21:00
Mon 5 Jul 3%●●●●●●●●●●21:00
Tue 6 Jul 8%●●●●●●●●●●21:00
Wed 7 Jul 16%●●●●●●●●●●21:00
Thu 8 Jul 25%●●●●●●●●●●23:00
Fri 9 Jul 36%●●●●●●●●●●23:00
Sat 10 Jul 47%●●●●●●●●●●23:00
Sun 11 Jul 58%●●●●●●●●●●23:00
Mon 12 Jul 68%●●●●●●●●●●23:00
Tue 13 Jul 78%●●●●●●●●●●23:00
Wed 14 Jul 86%●●●●●●●●●●21:00
Thu 15 Jul 92%●●●●●●●●●●21:00
Fri 16 Jul 96%●●●●●●●●●●21:00
Sat 17 Jul 99%●●●●●●●●●●21:00
Sun 18 Jul 100%●●●●●●●●●●21:00
Mon 19 Jul 99%●●●●●●●●●●23:00
Tue 20 Jul 97%●●●●●●●●●●21:00
Wed 21 Jul 92%●●●●●●●●●●21:00
Thu 22 Jul 86%●●●●●●●●●●21:00
Fri 23 Jul 79%●●●●●●●●●●21:00
Sat 24 Jul 70%●●●●●●●●●●21:00
Sun 25 Jul 60%●●●●●●●●●●21:00
Mon 26 Jul 50%●●●●●●●●●●21:00
Tue 27 Jul 39%●●●●●●●●●●21:00
Wed 28 Jul 29%●●●●●●●●●●21:00
Thu 29 Jul 19%●●●●●●●●●●21:00
Fri 30 Jul 11%●●●●●●●●●●21:00
Sat 31 Jul 5%●●●●●●●●●●21:00

Check one night in detail Jervis Bay tours

Questions

What are the best nights to see the bioluminescence at Jervis Bay in July 2027?

The darkest nights are Thu 1 Jul, Fri 2 Jul, Sat 3 Jul, Sun 4 Jul, Mon 5 Jul, Tue 6 Jul, Wed 7 Jul, Thu 8 Jul, Fri 9 Jul, Sat 24 Jul and more. 18 of 31 nights score at least 4 out of 5.

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.

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

21:00 is the darker choice on 16 nights; 23:00 is the darker choice on 3 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).