Best Time to Dive Efate (Mele Bay
Across 2 Efate (Mele Bay, off Port Vila) dive sites with multi-year conditions history, December historically shows the most favorable days — 89% of sampled days in the good band. The next-highest months are January (85%), March (84%) and April (82%). May historically shows the fewest favorable days (45% of sampled days). Average water temperature in the sample runs from about 26°C in August to 29°C in February. 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 Efate (Mele Bay?
| Month | Historically favorable days | Water temp | Typical seas |
|---|---|---|---|
| Jan | 85% | 29°C | 0.9 m |
| Feb | 68% | 29°C | 1.1 m |
| Mar | 84% | 29°C | 1.0 m |
| Apr | 82% | 29°C | 0.9 m |
| May | 45% | 28°C | 1.2 m |
| Jun | 57% | 27°C | 1.1 m |
| Jul | 59% | 27°C | 1.1 m |
| Aug | 49% | 26°C | 1.1 m |
| Sep | 48% | 26°C | 1.2 m |
| Oct | 72% | 27°C | 1.1 m |
| Nov | 80% | 28°C | 0.9 m |
| Dec | 89% | 29°C | 0.9 m |
% = share of sampled days scoring in the favorable band, median across 2 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.
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