Best Time to Dive Western Cape
Across 229 Western Cape dive sites with multi-year conditions history, April historically shows the most favorable days — 33% of sampled days in the good band. The next-highest months are March (32%), January (31%) and February (25%). June historically shows the fewest favorable days (11% of sampled days). Average water temperature in the sample runs from about 15°C in August to 19°C in December. Typical seas range from 2.0 m to 3.0 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 Western Cape?
| Month | Historically favorable days | Water temp | Typical seas |
|---|---|---|---|
| Jan | 31% | 19°C | 2.0 m |
| Feb | 25% | 19°C | 2.2 m |
| Mar | 32% | 17°C | 2.1 m |
| Apr | 33% | 16°C | 2.2 m |
| May | 20% | 16°C | 2.5 m |
| Jun | 11% | 15°C | 2.8 m |
| Jul | 15% | 15°C | 3.0 m |
| Aug | 16% | 15°C | 2.8 m |
| Sep | 19% | 15°C | 2.6 m |
| Oct | 24% | 16°C | 2.2 m |
| Nov | 22% | 17°C | 2.2 m |
| Dec | 24% | 19°C | 2.2 m |
% = share of sampled days scoring in the favorable band, median across 229 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 Southern Africa region — not site-specific promises.
- Humpback whaleNov–Jan
- Great white sharkJanuary
- Bull sharkDec–May
- Tiger sharkyear-round
Bars are Jan–Dec — months when sightings historically concentrate (GBIF occurrence records). Wildlife is never guaranteed.
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