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Best Time to Dive Kosrae

Across 3 Kosrae dive sites with multi-year conditions history, September historically shows the most favorable days — 97% of sampled days in the good band. The next-highest months are August (88%), July (74%) and October (70%). January historically shows the fewest favorable days (1% of sampled days). Average water temperature in the sample runs from about 29°C in April to 30°C in September. Typical seas range from 1.3 m to 2.6 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 Kosrae?

MonthHistorically favorable daysWater tempTypical seas
Jan1%29°C2.6 m
Feb1%29°C2.5 m
Mar11%29°C2.3 m
Apr10%29°C1.9 m
May35%29°C1.6 m
Jun61%30°C1.4 m
Jul74%30°C1.4 m
Aug88%30°C1.3 m
Sep97%30°C1.3 m
Oct70%30°C1.4 m
Nov36%30°C1.7 m
Dec2%30°C2.3 m

% = share of sampled days scoring in the favorable band, median across 3 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.

Bars are Jan–Dec — months when sightings historically concentrate (GBIF occurrence records). Wildlife is never guaranteed.

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