Best Time to Dive Papua New Guinea
Across 19 Papua New Guinea dive sites with multi-year conditions history, April and November historically show the most favorable days — 100% of sampled days in the good band. The next-highest months are January (99%), May (99%) and March (98%). August historically shows the fewest favorable days (84% of sampled days). Average water temperature in the sample runs from about 28°C in August to 31°C in January. Typical seas range from 0.6 m to 0.9 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 Papua New Guinea?
| Month | Historically favorable days | Water temp | Typical seas |
|---|---|---|---|
| Jan | 99% | 31°C | 0.6 m |
| Feb | 96% | 30°C | 0.8 m |
| Mar | 98% | 30°C | 0.6 m |
| Apr | 100% | 31°C | 0.6 m |
| May | 99% | 30°C | 0.8 m |
| Jun | 97% | 29°C | 0.8 m |
| Jul | 89% | 29°C | 0.9 m |
| Aug | 84% | 28°C | 0.9 m |
| Sep | 90% | 29°C | 0.9 m |
| Oct | 98% | 29°C | 0.7 m |
| Nov | 100% | 30°C | 0.6 m |
| Dec | 98% | 30°C | 0.6 m |
% = share of sampled days scoring in the favorable band, median across 19 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 Micronesia & western Pacific region — not site-specific promises.
- Whale sharkDec–Jan
- Scalloped hammerheadFeb–Mar
- Humpback whaleJul–Oct
- Reef manta rayJun–Sep
- Tiger sharkyear-round
- Bull sharkyear-round
- Green sea turtleyear-round
Bars are Jan–Dec — months when sightings historically concentrate (GBIF occurrence records). Wildlife is never guaranteed.
Diving Papua New Guinea 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