2026 Climate Averages

Weather: Bangkok — September

It's a rainy period, but great for indoor activities, museums, and lower prices.

☔ Climate Overview

September is a wet time to visit Bangkok. Hot conditions with temperatures reaching 33°C—stay hydrated and seek shade. This is one of the wettest months—waterproof gear is essential. Being off-peak, you'll find better deals and fewer crowds.

5.9
GoTripzi Score Good

Based on weather comfort, crowds, prices, and activity options

Avg High

33°C

Avg Low

26°C

Rainy days

27days

Daylight

12.2h

Feels like 39°C / 32°C — humidity makes it feel warmer

Rainfall

266mm

Sunshine

7.7h/day

Humidity

81%

Very Muggy
Sun Strength

6.3

High
Wind

13 km/h (gusts 31)

Is September a good time to visit Bangkok?

It's a rainy period, but great for indoor activities, museums, and lower prices.

Now

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Feels like --
Wind --
Humidity --
UV Index --
Local time —

Air Quality

Travel Context

  • Crowds
    Very Quiet
  • Travel Costs Value Rates

Daylight

Sunrise

06:08

Sunset

18:21

12.2h daylight

Visiting Bangkok in September: Pros & Cons

Pros

  • Fewer crowds and better hotel deals

Cons

  • Frequent rain may disrupt outdoor activities
  • High humidity makes the heat feel oppressive

Things to Do in September

Recommended for This Weather

🌅 Early morning sightseeing (before the heat)
🏛️ Museums & galleries
🍳 Cooking classes & food tours
🎭 Cultural tours & local experiences

Bangkok Weather by Month

Month Avg High Avg Low Rain Sunshine Humidity UV Index Crowds Condition
Jan 32°C 22°C 2d (5mm) 10.5h
69% Muggy
7.5 Very High
Excellent
Feb 33°C 24°C 5d (32mm) 10.6h
73% Muggy
8 Very High
Excellent
Mar 34°C 27°C 5d (36mm) 10.8h
74% Muggy
8.8 Very High
Good
Apr 35°C 28°C 10d (72mm) 10.7h
73% Muggy
8.9 Very High
Good
May 34°C 28°C 17d (147mm) 10h
76% Muggy
8 Very High
Wet
Jun 34°C 27°C 19d (104mm) 9.6h
74% Muggy
7.6 Very High
Wet
Jul 33°C 27°C 25d (168mm) 8.2h
77% Muggy
6.8 High
Wet
Aug 34°C 27°C 22d (131mm) 8.9h
76% Muggy
7.3 Very High
Wet
Sep Current 33°C 26°C 27d (266mm) 7.7h
81% Very Muggy
6.3 High
Wet
Oct 32°C 26°C 21d (194mm) 8.4h
81% Very Muggy
6.3 High
Wet
Nov 32°C 25°C 10d (73mm) 9.2h
74% Muggy
6.6 High
Excellent
Dec 31°C 23°C 2d (10mm) 9.8h
68% Muggy
6.8 High
Excellent

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Your Best MonthMayScore: 7.6
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5.212.Nov
4.7

Where to Stay

See hotels, apartments & rentals around Bangkok – live prices from Booking.com, Expedia, Vrbo and more

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Bangkok

Golden temples like the Grand Palace & Wat Phra Kaew, neon-lit street food in Chinatown, floating markets, and nightlife that runs until dawn.

View Full Destination Guide

What to Pack for September

Light, breathable fabrics like cotton and linen are essential. Opt for loose-fitting clothing in light colors to stay cool. A waterproof jacket and shoes are non-negotiable — showers are frequent. Don't forget a wide-brimmed hat and high-SPF sunscreen — the sun is strong.

Tropical Very Quiet

🎒Personalized Packing List

Tell us about your trip and we'll create a custom packing list based on the weather.

Your Packing List

📋Essentials
👕Clothing
👟Footwear
🎒Accessories
🧴Toiletries & Health

Planning a trip to Bangkok?

💰 Off-peak — great deals available now

Frequently Asked Questions

Is September a good time to visit Bangkok?
September is typically wet for visiting Bangkok, with average highs of 33°C and around 27 rainy days. Plan your activities accordingly—outdoor sightseeing is best on dry days, while rainy days are perfect for museums and indoor attractions.
Does it get cold at night in Bangkok in September?
Nights stay pleasantly warm in Bangkok during September, around 26°C. Light evening wear is sufficient, and outdoor dining is very comfortable. Many locals and visitors enjoy late-night walks and outdoor activities after sunset.
What should I pack for Bangkok in September?
With highs of 33°C and lows of 26°C in September, we recommend: Compact umbrella, Waterproof jacket/shell, Water-resistant shoes, Lightweight breathable clothes. Layering is key as temperatures can vary between air-conditioned interiors and outdoors. Comfortable walking shoes are essential for cobblestone streets.
Does it rain a lot in Bangkok in September?
Bangkok typically sees around 27 rainy days in September. Rain is usually in the form of brief showers rather than all-day downpours, so a compact umbrella is sufficient. Mornings tend to be drier, making them ideal for outdoor sightseeing.
How many hours of daylight are there in Bangkok in September?
In September, Bangkok gets approximately 12.2 hours of daylight per day. This affects how much sightseeing you can fit in—longer days mean more time for outdoor activities, while shorter days are perfect for cozy museum visits and early dinners.
Is September peak season in Bangkok?
No, September is not peak season in Bangkok. Expect better value on accommodation, shorter queues at attractions, and fewer tourists at popular spots. This is an excellent time to experience the city like a local and enjoy a more authentic atmosphere.

Weather Data: Based on 2020–2025 historical climate data from Open-Meteo

Solar calculations: SunCalc (timezone: Asia/Bangkok)

Last Updated: February 2026

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