Best Time to Dive Bali
Across 36 Bali dive sites with multi-year conditions history, November historically shows the most favorable days — 100% of sampled days in the good band. The next-highest months are March (98%), December (96%) and April (93%). July historically shows the fewest favorable days (77% of sampled days). Average water temperature in the sample runs from about 28°C in August to 30°C in December. Typical seas range from 0.9 m to 1.2 m of significant wave height through the year. These figures are historical climatology computed from measured conditions — patterns, not a forecast or a guarantee.
Computed from our own conditions climatology — measured history, not brochure copy.
Which months are historically most favorable in Bali?
| Month | Historically favorable days | Water temp | Typical seas |
|---|---|---|---|
| Jan | 92% | 29°C | 1.0 m |
| Feb | 93% | 29°C | 1.0 m |
| Mar | 98% | 29°C | 1.0 m |
| Apr | 93% | 29°C | 1.0 m |
| May | 92% | 29°C | 1.0 m |
| Jun | 83% | 29°C | 1.2 m |
| Jul | 77% | 28°C | 1.2 m |
| Aug | 80% | 28°C | 1.2 m |
| Sep | 82% | 28°C | 1.2 m |
| Oct | 88% | 29°C | 1.1 m |
| Nov | 100% | 30°C | 0.9 m |
| Dec | 96% | 30°C | 1.0 m |
% = share of sampled days scoring in the favorable band, median across 36 dive sites with at least two years of history. Ringed = historical peak.
How does this compare worldwide? The Most Reliable Diving Months on Earth ranks 61 countries by the same measure.
Marine life seasons
Sighting patterns across the wider Coral Triangle & Southeast Asia region — not site-specific promises.
- Green sea turtleSep–Oct
- Reef manta rayFeb–May
- Whale sharkSep–Feb
Bars are Jan–Dec — months when sightings historically concentrate (GBIF occurrence records). Wildlife is never guaranteed.
Diving Bali soon? Browse its dive sites with auto-updating 7-day condition windows — free, no account needed.
Choosing between destinations? Compare them month by month with the Trip PlannerPro