Da Nang in September: rains begin, warm sea and currents
September in Da Nang is the start of the rainy season. It's still warm — highs around 32 °C and water at 29–30 °C, among the warmest of the year.
September in Da Nang is the start of the rainy season. It's still warm — highs around 32 °C and water at 29–30 °C, among the warmest of the year. But there's plenty of rain: about 351 mm over 15 rainy days by the weather station averages, two and a half times August's, and rip currents appear along the shore. Swim on calm days between the flags, and keep a spare day for trips out of town.
What is the weather like in Da Nang in September?
| Day | Night | Rain | Rainy days | Sunshine | Sea |
|---|---|---|---|---|---|
| 31.8 °C | 24.5 °C | 351 mm | 15 | 177 h | 29–30 °C |
"Day" is the average daily high, "night" the average nightly low. Averages from QCVN 02:2022/BXD; sea temperature from three climate references.
Can you swim in Da Nang in September?
Yes, but more carefully than in summer. From September to December rip currents appear along Da Nang's shore. Swim only between the red-and-yellow flags where lifeguards are watching; don't swim under a red flag. Beaches and lifeguard hours — Da Nang beaches.
Is September a good time to visit Da Nang?
Depends what for. For the beach, April to August is better — now it's the rainy season, so book trips with a spare day and stay away from the river. Hoi An is open all year — Da Nang to Hoi An; sights — what to see in Da Nang. Next: the month after — Da Nang in October; all months — when to go to Da Nang.
FAQ
What's the weather in Da Nang in September? Highs around 31.8 °C, nights around 24.5 °C, about 351 mm of rain over 15 rainy days.
How warm is the sea in September? About 29–30 °C.
Can you swim in September? Only on calm days between the flags: from September to December there are currents, and big waves in October–November.
Sources and checks
Weather — long-term averages from the Da Nang weather station (QCVN 02:2022/BXD, station No. 108). Sea temperature — World Sea Temperatures, weather2travel and Climates to Travel, checked 12 November 2026. Sea, rain and typhoon seasons — when to go to Da Nang (sources there). Advice is ours.