Con Son Island in September
Not the best time
September shows signs of improvement but remains risky. You might get lucky with weather windows, but you're still gambling with monsoon conditions.
Weather
September starts the slow transition out of monsoon with temperatures climbing back to 31°C during the day and 25°C at night. Humidity drops slightly to 90%, but you still get 10-12 rainy days. Storms become less predictable.
31°C high25°C low11 rain days
Crowds & Cost
low crowds
~$55/day average
Events & Festivals
- •Mid-Autumn Festival
- •National Day (September 2)
September Tips
- •Weather remains unpredictable - pack for both rain and heat
- •Hotel prices stay low as tourism hasn't picked up yet
- •September storms can be violent but shorter than peak monsoon
All Months
November through April delivers perfect weather with temperatures around 26°C and minimal rain. December and January see the most visitors, so expect higher prices and fuller flights. The shoulder months of November and April offer the sweet spot — great weather with fewer crowds and better deals. Avoid May through October when monsoons bring heavy rain and rough seas that can cancel diving trips. But here's a secret: September and October, despite the rain, offer the best turtle watching since it's peak nesting season. The weather breaks between storms, and you'll practically have the beaches to yourself. Water temperature stays warm year-round at 27°C, perfect for swimming and diving regardless of season.
Con Son Island Scores
Solo
7/10
Couples
8/10
Families
6/10
Adventure
6/10
Budget
6/10
Luxury
7/10
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