Thailand Pattaya Weather in September — Climate Guide
September in Pattaya is moderate
Pattaya Weather in September — Quick Answer
As of 2026- Avg temp
- 32° / 26°
- Rainfall
- 220mm · 16 days
- Crowds
- Quiet
As of 2026, Pattaya in September averages a high of 32°C and low of 26°C with 220mm of rain over about 16 days. Wettest month — hot, very humid at 32°C/26°C with the heaviest, most frequent rain of the year. Light quick-dry clothing, swimwear, a reliable rain jacket and umbrella, and waterproof footwear. UV still notable in sunny gaps.
September is moderate for Pattaya.
September is the wettest month — hot and very humid at around 32°C/26°C, with the year's heaviest and most frequent rain (about 220mm). Downpours are longer and more common than midsummer, and some full afternoons can be washed out, though sunny gaps still appear.
It's the quietest, cheapest time to visit, with the lowest crowds and the best room deals — appealing if you're flexible and rain-tolerant. The sea is warm but choppier, so island days are hit-or-miss and ferry schedules can be disrupted; check conditions before committing.
Travel score
Pattaya September Weather Stats
Avg High
32°C
Avg Low
26°C
Rainy Days
16
220mm total
Sunshine
5h
Daily avg
Humidity
80%
muggy
UV Index
10
Very high
Wind
11 km/h
Gusts 26
Sea Temp
30°C
Avg water temp
Crowds
Quiet
At attractions
September Sunrise & Sunset
Air Quality
PM2.5
16 μg/m³
PM10
30 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
39°C
Nighttime
29°C
Humidity and wind affect how the actual temperature feels.
Wind
11 km/h
Max gust 26 km/h
Activities Recommended for September
September Travel Pros & Cons
Pros
- Lowest prices and crowds
- Lush green scenery, dramatic skies
- Great room deals
- Warm sea
Cons
- Wettest month — heavy frequent rain
- Some washed-out days
- Choppier seas, disrupted ferries
- Very humid
September Events & Festivals
- Wettest month of the year — peak green season
- Lowest crowds and prices
- Heaviest, most frequent rain
- Lush, dramatic skies
Pattaya in September — Full Picture
September is the wettest month — hot and very humid at around 32°C/26°C, with the year's heaviest and most frequent rain (about 220mm). Downpours are longer and more common than midsummer, and some full afternoons can be washed out, though sunny gaps still appear.
It's the quietest, cheapest time to visit, with the lowest crowds and the best room deals — appealing if you're flexible and rain-tolerant. The sea is warm but choppier, so island days are hit-or-miss and ferry schedules can be disrupted; check conditions before committing.
Plan around the weather: prioritize sunny mornings for the beach and outdoor sights, and lean on Pattaya's strong indoor options (malls, Art in Paradise, Underwater World, spas, the floating market's covered areas) for the rain. Bring proper rain gear. For travelers who want a calm, low-cost trip and don't mind weather gambling, September delivers value.
What to Wear & What to Pack
Wettest month — hot, very humid at 32°C/26°C with the heaviest, most frequent rain of the year. Light quick-dry clothing, swimwear, a reliable rain jacket and umbrella, and waterproof footwear. UV still notable in sunny gaps.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
34.3°C
26.7°C
7/mo
Summer (Jun·Jul·Aug)
33°C
26.3°C
13/mo
Autumn (Sep·Oct·Nov)
Current32°C
25°C
12/mo
Winter (Dec·Jan·Feb)
32°C
24°C
1.7/mo
Pattaya Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| January (Best) | 32° | 24° | 2d·15mm | 9h | 70% | 11 | Very busy | Peak |
| February (Best) | 33° | 25° | 2d·20mm | 9h | 70% | 11 | Very busy | Peak |
| 34° | 26° | 3d·35mm | 9h | 72% | 12 | Busy | Shoulder | |
| 35° | 27° | 6d·75mm | 8h | 74% | 12 | Very busy | Peak | |
| 34° | 27° | 12d·165mm | 7h | 76% | 11 | Moderate | Shoulder | |
| 33° | 27° | 12d·130mm | 7h | 76% | 11 | Quiet | Low season | |
| 33° | 26° | 13d·150mm | 6h | 77% | 11 | Moderate | Low season | |
| 33° | 26° | 14d·160mm | 6h | 77% | 11 | Moderate | Low season | |
| 32° | 26° | 16d·220mm | 5h | 80% | 10 | Quiet | Low season | |
| 32° | 25° | 15d·200mm | 6h | 79% | 10 | Quiet | Shoulder | |
| November (Best) | 32° | 24° | 5d·50mm | 8h | 73% | 11 | Busy | Peak |
| December (Best) | 31° | 23° | 1d·10mm | 9h | 70% | 10 | Very busy | Peak |
View Other Months
Pattaya September Hotel Picks
Frequently Asked Questions
Is September a good time to visit Pattaya?
Pattaya in September is moderate. Tourist crowds are quiet and flight/hotel prices are low season.
What's the average temperature in Pattaya in September?
Pattaya September averages a high of 32°C and a low of 26°C.
Does it rain much in Pattaya in September?
Pattaya September averages 220mm of rainfall over about 16 rainy days.
What should I wear in Pattaya in September?
Wettest month — hot, very humid at 32°C/26°C with the heaviest, most frequent rain of the year. Light quick-dry clothing, swimwear, a reliable rain jacket and umbrella, and waterproof footwear. UV still notable in sunny gaps.
What time are sunrise and sunset in Pattaya in September?
Pattaya September sunrise is 06:00 and sunset is 18:15, with 12h 15min of daylight.
What's the air quality like in Pattaya in September?
Pattaya September air quality (AQI) averages 42, rated Good. PM2.5 averages 16μg/m³.
What activities are recommended in Pattaya in September?
In September, Pattaya is great for Sunny-morning beach time, Indoor attractions (aquarium, 3D museum), Spa and mall days.
Is September peak season in Pattaya?
Pattaya September crowds are quiet and prices are low season. You can travel relatively comfortably without long queues.
Best Months to Visit Pattaya
View Other Months
Planning a September trip to Pattaya?
You've checked the weather — next come the budget and the route.
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.