An Bang
Just 3km north of Hoi An, An Bang is one of Vietnam’s most happening and enjoyable beaches. There's a wonderful stretch of fine sand and an enormous horizon (with less of the serious erosion evident at Cua Dai), and with only the distant Cham Islands interrupting the seaside symmetry. Staying at the beach and visiting Hoi An on day trips is a good strategy for a relaxing visit to the area.
Nha Trang
Forming a magnificent sweeping arc, Nha Trang's 6km-long golden-sand beach is the city's trump card. Sections are roped off and designated for safe swimming (where you won't be bothered by jet skis or boats). Two popular lounging spots are the Sailing Club and Louisiane Brewhouse. If you prefer tanning alone, head south to avoid the majority of the crowds.
Mui Ne
Mui Ne was once the jewel of Vietnam’s beach resorts, but recent years has seen harsh tides erode away the sand from the golden beach and over-development erode away its charm. That said, there are still some nice sections of sand tucked away here, ideal (in season) for those who like to party at night and snooze on sunbeds during the day. Kitesurfing is also a huge draw – there are several excellent schools and world-class wind conditions between late October and April.
Cat Ba
Rugged, craggy and jungle-clad Cat Ba, is the largest island in Halong Bay and a stop-off for most tourist boat trips around the Unesco-listed region. To that end, the island can get very busy, which shatters the serenity somewhat; but visit during quieter months and its beaches are up there with the best in Vietnam. The three beaches of Cat Co Cove, a ten-minute walk southeast from Cat Ba Town, are perhaps the pick of the bunch.