The month in detail
What to expect in September
September falls in the wet season in Bangkok. Showers are often brief but intense. With 60% of rainy days, always have indoor alternatives planned.
September ranks 11 out of 12 months in Bangkok. Compared to August: 10 pts more rainy days.
This month's conditions
What it's like in September
UV index
7 · high
sunscreen and hat advised
Feels like
oppressive heat
24°
Daylight
12.1h of daylight
Air quality
good
AQI 36
Compare
Is September the right month?
The best month in Bangkok is December (5.9/10), 1.4 pt higher than September.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Bangkok
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Bangkok
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a tropical stay.
Country · Thailand
🗣️LanguageThai
💶CurrencyThai Baht (฿)
🚗DrivingLeft-hand
🛡️Safety ⓘSafe · 2/5
💰Cost of living ⓘCheap · 2/5
🌡️ Climate
🌍Climate typeTropical
📈Climate trend ⓘStable
🔥Hottest monthApril · 35°C
❄️Coolest monthJuly · 31°C
🌧️Rainiest month ⓘSeptember · 60%
🏝️ Tropical stay
🌞Dry season ⓘMay → Sep
🌧️Wet season ⓘDec → Mar
🌀Cyclones ⓘSeason Nov-Apr
Explore
Other destinations in September
If September doesn't convince you for this destination, compare with others.
Location
Where is Bangkok ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
ThailandTropical climate with a 5.9 → 4.5 gap between best and worst month. 10 years of ERA5 data to choose by project.
13.75°N · 100.52°E
Questions
Frequently asked questions
What is the best time to visit Bangkok?
December is the best month with 31.0°C highs, 23.0°C lows, 6.9h of sunshine and 3.0% rainy days.
How many hours of sunshine does Bangkok get in December?
Bangkok averages 6.9 sunshine hours per day in December. It is the sunniest month with a climate score of 5.9/10.
What is the rainiest month in Bangkok?
August is the most unfavourable month with August has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Bangkok in December?
In December, overnight lows reach 23.0°C, while afternoon highs average 31.0°C.
Is Bangkok good in winter?
In winter (December-February), Bangkok scores 5.6/10 on average — Decent period conditions for cultural visits.. The best month overall remains December with a score of 5.9/10.
When should you avoid Bangkok?
August is the most difficult month to visit Bangkok, with August has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Do you need sun protection in Bangkok in September?
The average UV index reaches 7 in September in Bangkok (high), with about 12.1h of daylight. Sunscreen and hat advised.