Mayhem
Mayhem is a dive site in Raja Ampat, Indonesia. Currents typically run at 0.9 km/h and reach 1.5 km/h on the strongest days. Water temperatures range from 30°C in July to 30°C in November. The typical daily tidal range is about 0.9 m. Species recorded in the area include Blackfin Barracuda, Tasselled Wobbegong, Yellow Spotted Trevally, Bubble-tip Anemone and Humpback Grouper.
Dive Conditions
🐠 Marine Life at This Dive Site
Species data from iNaturalist (CC BY-NC)
Data sources: currents and water temperature from Open-Meteo Marine (CC BY 4.0), hourly model values 2024. Tidal range is the median daily range of modelled sea level from Open-Meteo Marine, hourly values 2024. Species observations from iNaturalist, checked against the World Register of Marine Species.
Conditions at Mayhem through the year
Sea surface temperature at the site coordinates, averaged per month from hourly model values for 2024. The water is warmest in November at about 30 °C and coolest in July at about 30 °C, a spread of 0.9 degrees across the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 29.8 | 29.6 | 30.0 | 30.2 | 30.2 | 29.9 | 29.5 | 29.5 | 29.6 | 29.9 | 30.4 | 30.3 |
Ocean current at the site runs at a typical 0.9 km/h. In the strongest tenth of the hours modelled for 2024 it reaches 1.5 km/h, which is when entries are normally timed to slack water at the turn of the tide.
The tide moves the water level by a median 0.9 m over a day, and by up to 1.2 m on the largest days of the month. That range drives how much water is exchanged over the reef and when the current turns.
In the open sea off Mayhem, the highest wave of the day exceeded 1.5 m on 0.0 % of days between 2015 and 2024. In no month did this happen on more than 1 % of days. Land within 10 km blocks some of the directions these waves come from (open to about 74 % of them), so conditions at the site are likely calmer than these open-sea values.
Satellite habitat mapping places Mayhem on a sheltered reef slope, over a seabed mapped as coral and algae. The classification comes from the nearest mapped reef polygon, about 40 m from the listed coordinates, so it describes the reef the site sits on rather than a single point on it.
How Mayhem compares
These comparisons use only the measured values above, set against the 351 dive sites published on findadive.com. A percentage shows the share of other sites with a lower (or higher) value, so it reads the same way wherever the site is. Mayhem sits with its mean water temperature in the top tenth and its coolest-month water temperature in the top tenth of all listed sites.
| Measure | This site | Compared with all sites | Median in Raja Ampat |
|---|---|---|---|
| Mean water temperature | 29.9 °C | warmer than 91 % of the other 350 sites | 29.9 °C (11 sites) |
| Water temperature in the coolest month | 29.5 °C | warmer than 99 % of the other 350 sites | 29.4 °C (11 sites) |
| Typical current | 0.9 km/h | weaker than 61 % of the other 350 sites | 1.8 km/h (11 sites) |
| Current in the strongest 10 % of hours | 1.5 km/h | weaker than 71 % of the other 350 sites | 3.5 km/h (11 sites) |
| Median daily tidal range | 0.9 m | smaller than 98 % of the other 350 sites | 1.1 m (11 sites) |
Water temperature, current and tide from Open-Meteo Marine (CC BY 4.0), hourly model values for 2024 at -0.5120°, 130.4471°. Wave statistics from ERA5-Ocean via Open-Meteo Marine (contains modified Copernicus Climate Change Service information 2015–2024), daily maximum wave height on a 0.5° grid; land shelter tested against Natural Earth coastlines. Reef structure and seabed cover from the Allen Coral Atlas © 2018–2023 Allen Coral Atlas Partnership and Arizona State University (CC BY 4.0).
Nearby Dive Schools
Marine life recorded at this site
Research-grade observations from iNaturalist within about 12 km of these coordinates.
