Ha long Bay Weather in September

In Ha long Bay, September brings very high daytime temperatures around 31°C (88°F), with nights cooling to 26°C (79°F). This month falls within the rainy season, so expect frequent rainfall.

Rainfall in Ha long Bay in September

As part of the rainy season, Ha long Bay sees around 14 days of rain in September, with an average of 318 mm (13 in). Rainy season showers here are typically intense, often clearing quickly but coming down hard while they last.

Temperature in Ha long Bay in September

September in Ha long Bay brings typical temperatures with highs around 31°C (88°F) and lows of 26°C (79°F). If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. Nights remain warm at around 26°C (79°F). For a more comfortable sleep, a cold shower before bed and a fan or air conditioning can make a big difference.

Sunshine in Ha long Bay in September

With approximately 190 hours of sunshine, the days are filled with clear skies during the day. Rain typically falls in the afternoon or evening, keeping mornings and early parts of the day sunny.

If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit Ha long Bay. Our weather planner can help you explore destinations with more pleasant weather conditions.