Best time to dive Ningaloo Reef
Whale sharks roughly March–August, most reliably March–July (encounters are licensed snorkel tours); humpbacks July–November; mantas April–November and year-round in Coral Bay. Best diving May–September.
Peak season: April–October
Overall diving, month by month
Balanced scoring · forecasts include the 2026/27 El Niño outlook
Confidence: Nov medium · Dec medium · Jan medium · Feb medium · Mar medium · Apr medium · May medium · Jun medium · Jul medium · Aug medium · Sep medium · Oct medium · Nov medium · Dec medium
What's good when
Each attribute scored 0–10 for every month
| Nov2026 | Dec | Jan2027 | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pelagic & big animals | 7 | 7 | 6 | 6 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 7 | 7 |
| Macro life | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Coral & reef health | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Visibility | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 7 | 7 |
| Water temperature | 6 | 7 | 8 | 9 | 9 | 8 | 7 | 6 | 5 | 5 | 5 | 5 | 6 | 8 |
| Weather & sea state | 7 | 7 | 7 | 6 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 |
| Operations & access | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 |
Climate outlook
How this year's forecast differs from a typical year
- Water temperature -0.8 °C · Weaker Leeuwin Current in El Niño brings cooler water (stronger and warmer in La Niña) (Nov 2026 – June 2027)
Water temperature & visibility
| Month | Water | Visibility |
|---|---|---|
| November 2026 | 23.5 °C (74 °F) | 15–25 m |
| December 2026 | 24.8 °C (77 °F) | 15–25 m |
| January 2027 | 26.3 °C (79 °F) | 15–25 m |
| February 2027 | 26.7 °C (80 °F) | 15–25 m |
| March 2027 | 26.8 °C (80 °F) | 15–25 m |
| April 2027 | 25.9 °C (79 °F) | 15–25 m |
| May 2027 | 24.6 °C (76 °F) | 15–25 m |
| June 2027 | 23.2 °C (74 °F) | 20–30 m |
| July 2027 | 22.3 °C (72 °F) | 20–30 m |
| August 2027 | 21.9 °C (71 °F) | 20–30 m |
| September 2027 | 22.0 °C (72 °F) | 20–30 m |
| October 2027 | 22.6 °C (73 °F) | 20–30 m |
| November 2027 | 24.1 °C (75 °F) | 15–25 m |
| December 2027 | 25.7 °C (78 °F) | 15–25 m |
Marine life calendar
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| whale shark | ● | Peak | Peak | Peak | Peak | ● | ● | ● | ||||
| humpback whale | ● | Peak | Peak | Peak | ● | |||||||
| reef manta | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● |
| grey nurse shark | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● |
Peak = best odds · ● = regularly seen · blank = unlikely. Calendar months, every year.
About the diving
- Difficulty
- Beginner
- Current strength
- 2 / 5
- Luxury level
- 3 / 5
- Typical depth
- 3–25 m
- Max depth of interest
- 30 m
- Dive styles
- Shore, Day boat
- Suggested certification
- Open Water (whale-shark swims are snorkel only)
- Nearest airport
- LEA
- Snorkelling
- Good
- Known for
- whale shark, humpback whale, reef manta, grey nurse shark
Famous sites: Navy Pier · Muiron Islands · Lighthouse Bay · Coral Bay
Season notes & sources
- Whale sharks roughly March–August, most reliably March–July (encounters are licensed snorkel tours); humpbacks July–November; mantas April–November and year-round in Coral Bay. Best diving May–September.