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Jervis Bay in August 2027: 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 Mon 2 Aug, Wed 1 Sep · Full moon Tue 17 Aug

Night by night, August 2027

NightMoon21:0023:00Best
Sun 1 Aug 1%●●●●●●●●●●21:00
Mon 2 Aug 0%●●●●●●●●●●21:00
Tue 3 Aug 2%●●●●●●●●●●21:00
Wed 4 Aug 6%●●●●●●●●●●21:00
Thu 5 Aug 13%●●●●●●●●●●21:00
Fri 6 Aug 22%●●●●●●●●●●23:00
Sat 7 Aug 32%●●●●●●●●●●23:00
Sun 8 Aug 42%●●●●●●●●●●23:00
Mon 9 Aug 53%●●●●●●●●●●23:00
Tue 10 Aug 63%●●●●●●●●●●23:00
Wed 11 Aug 73%●●●●●●●●●●23:00
Thu 12 Aug 81%●●●●●●●●●●21:00
Fri 13 Aug 88%●●●●●●●●●●21:00
Sat 14 Aug 93%●●●●●●●●●●21:00
Sun 15 Aug 97%●●●●●●●●●●21:00
Mon 16 Aug 99%●●●●●●●●●●21:00
Tue 17 Aug 100%●●●●●●●●●●23:00
Wed 18 Aug 99%●●●●●●●●●●21:00
Thu 19 Aug 95%●●●●●●●●●●21:00
Fri 20 Aug 90%●●●●●●●●●●21:00
Sat 21 Aug 84%●●●●●●●●●●21:00
Sun 22 Aug 75%●●●●●●●●●●21:00
Mon 23 Aug 66%●●●●●●●●●●21:00
Tue 24 Aug 55%●●●●●●●●●●21:00
Wed 25 Aug 44%●●●●●●●●●●21:00
Thu 26 Aug 33%●●●●●●●●●●21:00
Fri 27 Aug 22%●●●●●●●●●●21:00
Sat 28 Aug 13%●●●●●●●●●●21:00
Sun 29 Aug 6%●●●●●●●●●●21:00
Mon 30 Aug 2%●●●●●●●●●●21:00
Tue 31 Aug 0%●●●●●●●●●●21:00

Check one night in detail Jervis Bay tours

Questions

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

The darkest nights are Sun 1 Aug, Mon 2 Aug, Tue 3 Aug, Wed 4 Aug, Thu 5 Aug, Fri 6 Aug, Sat 7 Aug, Mon 23 Aug, Tue 24 Aug, Wed 25 Aug and more. 18 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.

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

21:00 is the darker choice on 16 nights; 23:00 is the darker choice on 4 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).