Best Time to Dive Fernando de Noronha
Across 5 Fernando de Noronha dive sites with multi-year conditions history, April historically shows the most favorable days — 17% of sampled days in the good band. The next-highest months are March (16%), January (14%) and December (13%). September historically shows the fewest favorable days (0% of sampled days). Average water temperature in the sample runs from about 27°C in September to 30°C in April. Typical seas range from 1.8 m to 2.2 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 Fernando de Noronha?
| Month | Historically favorable days | Water temp | Typical seas |
|---|---|---|---|
| Jan | 14% | 28°C | 1.8 m |
| Feb | 12% | 29°C | 1.9 m |
| Mar | 16% | 29°C | 1.9 m |
| Apr | 17% | 30°C | 1.9 m |
| May | 6% | 29°C | 2.0 m |
| Jun | 2% | 28°C | 2.1 m |
| Jul | 2% | 27°C | 2.2 m |
| Aug | 3% | 27°C | 2.2 m |
| Sep | 0% | 27°C | 2.2 m |
| Oct | 2% | 27°C | 2.1 m |
| Nov | 2% | 27°C | 1.9 m |
| Dec | 13% | 28°C | 1.9 m |
% = share of sampled days scoring in the favorable band, median across 5 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 Brazil & South Atlantic region — not site-specific promises.
- Green sea turtleJuly
- Humpback whaleJun–Sep
Bars are Jan–Dec — months when sightings historically concentrate (GBIF occurrence records). Wildlife is never guaranteed.
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