Vietnam Phu Quoc Weather in September — Climate Guide
September in Phu Quoc is moderate
Phu Quoc Weather in September — Quick Answer
As of 2026- Avg temp
- 30° / 25°
- Rainfall
- 320mm · 19 days
- Crowds
- Moderate
As of 2026, Phu Quoc in September averages a high of 30°C and low of 25°C with 320mm of rain over about 19 days. Wettest residual — fully waterproof gear. Quick-dry inner layer. Multiple changes of clothes.
September is moderate for Phu Quoc.
September starts with Vietnamese Independence Day weekend (Sept 2) — domestic Vietnamese travel surge for 3-4 days. After that, the month becomes the lowest tourist arrival period of the year and hotel pricing returns to its annual lows (Long Beach 4-star $40-100/night). An Thoi snorkel cancellation rate hits 40-50%. Many smaller dive operators close September entirely.
This is the canonical 'risk it for value' month — if you accept that 30-50% of outdoor plans will get rained out and you'll spend more time at the hotel pool, you get luxury resorts at 50% of peak pricing and near-empty restaurants + spas. Honeymoon couples staying all-inclusive at JW Marriott Emerald Bay / Salinda mostly notice the rain only during sunset cruise attempts.
Travel score
Wettest residual + year's lowest pricing — risk it for value
September Weather at a Glance
September averages 86°F / 30°C highs and 77°F / 25°C lows with 19 rainy days and 320mm rainfall — wettest month residual. Humidity 82%. UV 9. Sunshine 6 hours. Sea 29°C but most dangerous of year (red flags persistent). Daily storms heavier + frequent 3-5 day rain stretches.
September Travel Advice
Travel insurance with cancellation coverage absolutely essential. An Thoi snorkel reservation = expect 40-50% chance of cancellation. Hon Thom Cable Car better odds (covered cabin). Luxury resort all-inclusive booking = best strategy. Vietnamese Independence Day weekend (Sept 2) brief domestic surge. Chuseok (varies, mid-Sept) Korean travelers can find value if accepting rain.
Flying In from Overseas
Year's lowest tourist arrivals = year's lowest international flight pricing. Direct flights from Seoul $250-400, Singapore $150-300, Bangkok $130-250. Chuseok (Korean Thanksgiving, varies mid-Sept) adds brief Korean uptick. Vietnamese Independence Day brief domestic peak.
September Pricing Trends
Year's lowest pricing returns: Long Beach 4-star $40-90/night, Sao Beach mid-range $60-130, JW Marriott Emerald Bay $400-800. Hon Thom cable car $25-28. Flights from Seoul $250-400.
Phu Quoc September Weather Stats
Avg High
30°C
Avg Low
25°C
Rainy Days
19
320mm total
Sunshine
6h
Daily avg
Humidity
82%
high
UV Index
9
Very high
Wind
14 km/h
Gusts 35
Sea Temp
29°C
dangerous
Crowds
Moderate
At attractions
September Sunrise & Sunset
Air Quality
PM2.5
9 μg/m³
PM10
18 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
35°C
Nighttime
27°C
Humidity and wind affect how the actual temperature feels.
Wind
14 km/h
Max gust 35 km/h
Activities Recommended for September
September Travel Pros & Cons
Pros
- Hotels 50% off peak
- Near-empty restaurants + spas
- Luxury resort bargains
- Chuseok + Mid-Autumn Festival overlap
Cons
- Wettest month residual
- An Thoi snorkel 40-50% cancellations
- Many dive ops close
- Sea most dangerous
September Events & Festivals
- Vietnamese Independence Day (Sept 2, national holiday — Vietnamese domestic surge weekend)
- Chuseok / Korean Thanksgiving (varies, mid-Sept)
- Mid-Autumn Festival (varies, mid-Sept)
Phu Quoc in September — Full Picture
September starts with Vietnamese Independence Day weekend (Sept 2) — domestic Vietnamese travel surge for 3-4 days. After that, the month becomes the lowest tourist arrival period of the year and hotel pricing returns to its annual lows (Long Beach 4-star $40-100/night). An Thoi snorkel cancellation rate hits 40-50%. Many smaller dive operators close September entirely.
This is the canonical 'risk it for value' month — if you accept that 30-50% of outdoor plans will get rained out and you'll spend more time at the hotel pool, you get luxury resorts at 50% of peak pricing and near-empty restaurants + spas. Honeymoon couples staying all-inclusive at JW Marriott Emerald Bay / Salinda mostly notice the rain only during sunset cruise attempts.
For day-trippers and active travelers: skip September. For pool + spa + Bill Bensley resort + cultural Phu Quoc (Phu Quoc Prison + pepper farms + Sim wine): this is the bargain month.
What to Wear & What to Pack
Wettest residual — fully waterproof gear. Quick-dry inner layer. Multiple changes of clothes.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
32.3°C
25.7°C
8.3/mo
Summer (Jun·Jul·Aug)
31°C
25°C
19.7/mo
Autumn (Sep·Oct·Nov)
Current30°C
24.3°C
15/mo
Winter (Dec·Jan·Feb)
30°C
23.3°C
3.7/mo
Phu Quoc Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| January (Best) | 30° | 23° | 3d·30mm | 9h | 73% | 10 | Very busy | Peak |
| February (Best) | 31° | 24° | 3d·25mm | 9h | 73% | 10 | Very busy | Peak |
| March (Best) | 32° | 25° | 4d·35mm | 9h | 75% | 11 | Busy | Shoulder |
| 33° | 26° | 7d·100mm | 8h | 78% | 11 | Busy | Peak | |
| 32° | 26° | 14d·200mm | 7h | 80% | 11 | Busy | Shoulder | |
| 31° | 25° | 18d·270mm | 6h | 82% | 10 | Moderate | Low season | |
| 31° | 25° | 20d·320mm | 6h | 84% | 10 | Busy | Shoulder | |
| 31° | 25° | 21d·350mm | 6h | 84% | 10 | Busy | Shoulder | |
| 30° | 25° | 19d·320mm | 6h | 82% | 9 | Moderate | Low season | |
| 30° | 24° | 16d·240mm | 6h | 80% | 9 | Moderate | Low season | |
| 30° | 24° | 10d·130mm | 7h | 76% | 9 | Busy | Shoulder | |
| December (Best) | 29° | 23° | 5d·60mm | 8h | 73% | 9 | Very busy | Peak |
View Other Months
Phu Quoc September Hotel Picks
Frequently Asked Questions
Is September a good time to visit Phu Quoc?
Phu Quoc in September is moderate. Tourist crowds are moderate and flight/hotel prices are low season.
What's the average temperature in Phu Quoc in September?
Phu Quoc September averages a high of 30°C and a low of 25°C.
Does it rain much in Phu Quoc in September?
Phu Quoc September averages 320mm of rainfall over about 19 rainy days.
What should I wear in Phu Quoc in September?
Wettest residual — fully waterproof gear. Quick-dry inner layer. Multiple changes of clothes.
What time are sunrise and sunset in Phu Quoc in September?
Phu Quoc September sunrise is 06:05 and sunset is 17:50, with 11h 45min of daylight.
What's the air quality like in Phu Quoc in September?
Phu Quoc September air quality (AQI) averages 30, rated Good. PM2.5 averages 9μg/m³.
What activities are recommended in Phu Quoc in September?
In September, Phu Quoc is great for Luxury resort stays, Spa days, Phu Quoc Prison museum (indoor).
Is September peak season in Phu Quoc?
Phu Quoc September crowds are moderate and prices are low season. You can travel relatively comfortably without long queues.
Best Months to Visit Phu Quoc
View Other Months
Planning a September trip to Phu Quoc?
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Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.