Swell direction
E trade swells year-round; S swells April–October
Island · Aunu'u
American Samoa's eastern outpost buoy.
Get Aunu'u, American Samoa live dataFreeBuoy CDIP 189 · Aunu'u, American Samoa
CDIP buoy 189 sits off Aunu'u, the small volcanic island just east of Tutuila in American Samoa. It pairs with the Poloa buoy (273) on the western side of Tutuila to give a complete picture of the wave conditions hitting American Samoa — south swells from the Roaring Forties, plus trade-wind swells from the east.
What you want to see on the buoy before you paddle out.
Swell direction
E trade swells year-round; S swells April–October
Swell period
8–18 s depending on season
Best for
Aunu'u reef breaks and eastern Tutuila
Wind
SE trade winds dominant
Aunu'u is a small, exposed island — buoy readings reflect open-ocean conditions. Local surf is reef-pass terrain; treat the buoy as ocean context, not a spot report.
Poloa (273) on the west and Aunu'u (189) on the east bracket American Samoa. Watching both lets you see swells crossing the territory and gives a redundant data feed for one of the most remote US jurisdictions.
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