If you’re planning a trip to Pattaya in the fall, get ready for warm temperatures, high humidity, and plenty of rain showers. Daytime highs usually hang around 30–31°C (86–88°F), and the air stays thick with tropical moisture.
Rain really ramps up in September and October, so this is the wettest stretch of the year. Even with all the dampness, the sea stays warm and surprisingly inviting. Sometimes you’ll get lucky with breaks of sunshine, so outdoor activities aren’t totally off the table.
Don’t expect crisp air or cool breezes like you’d find in more temperate places. Fall here just keeps the rainy season going, with heavy downpours, lots of clouds, and quick flashes of sun.
The upside? All that rain keeps the landscape lush and green, and the coastline takes on a softer, mistier vibe.
With a little planning, you can still enjoy this season. Warm sea temps, fewer tourists, and lower costs often make up for the unpredictable weather.
Understanding the temperature, rainfall, and daylight patterns can help you get the most out of your fall trip to Pattaya.
Overview of Fall Weather in Pattaya
Fall in Pattaya hits during the peak of the rainy season. You’ll deal with high humidity, frequent storms, and warm sea temperatures.
Rain falls hardest in September and October, while temperatures hold steady in the low 30s °C. It stays damp, but it’s still warm.
Typical Weather Patterns
Fall in Pattaya runs from September through November. Heavy rainfall dominates this time, especially in September and October, when monthly totals often top 200 mm (8 in).
You might see up to 18 rainy days in a single month, so outdoor plans can be a bit of a gamble.
Temperatures stay warm—usually 30°C to 32°C (86°F–90°F) during the day and rarely dipping below 25°C (77°F) at night. Even with all that rain, the sea stays at about 29°C (84°F), so swimming is usually on the menu.
Humidity climbs to its yearly peak, hovering around 80%, and that makes the heat feel even stronger. Pattaya gets about 5–6 hours of sunshine a day, with cloud cover blocking out a lot of direct sunlight.
After heavy showers, you’ll sometimes get short, clear spells. Those breaks can be a real relief from the gray.
Tropical Climate Characteristics
Pattaya sits in a tropical wet and dry climate. During fall, the wet phase definitely takes over.
High humidity, warm air, and warm water combine to fuel lots of downpours. These storms usually show up in the afternoon or evening and can be pretty intense, but they don’t last long.
The UV index stays high, even when clouds are out. Sun protection still matters, especially after a storm when skies clear up.
The Gulf of Thailand keeps sea breezes mild, so humidity doesn’t really let up. Daylight hours shorten a bit, from about 12.2 hours in September to 11.4 hours in November.
Even with slightly shorter days, the sun stays strong. The mix of damp air, high heat, and sudden storms really define the season.
Comparison With Other Seasons
Fall feels wetter and stickier compared to winter. Winter (November to February) brings drier air, cooler nights, and clearer skies, making it much more comfortable for outdoor stuff.
Spring (March to May) gets hotter and leads up to the monsoon, with rainfall starting to pick up in May, but it’s not as intense as in fall.
Summer (June to August) has a similar rainy pattern, but September and October usually get the biggest downpours.
If you visit in the fall, you’ll trade fewer crowds and cheaper hotels for wetter weather. Outdoor adventures might get interrupted, but you still get warm seas, tropical views, and that unique monsoon vibe.
Temperature Trends During Fall
Temperatures in Pattaya during fall stay pretty consistent. The days are hot, the nights are mild, and the tropical climate makes it feel even warmer than the numbers suggest.
Average Daytime and Nighttime Temperatures
Daytime temps usually land between 30°C and 31°C (86°F to 88°F). The heat doesn’t change much from September to November, so don’t expect it to cool off as the season goes on.
At night, it only drops a little. You’ll see 26°C to 27°C (79°F to 81°F) in September, and by November it’s closer to 26°C (79°F).
That small difference means you’ll feel warm all day and night. The sea stays toasty too, averaging about 29°C (84°F to 85°F), so you can swim any time.
Humidity and Heat Index
Humidity stays high through fall, often above 75%. This makes the air feel heavier and bumps up the heat index—basically, it feels hotter than the thermometer says.
When it’s around 31°C (88°F), the heat index can feel more like 36°C (97°F). You’ll probably notice this most in the afternoon.
It’s a good idea to plan outdoor stuff for early morning or late afternoon. Light clothes, shade, and plenty of water help you stay comfortable.
Seasonal Temperature Variations
Fall in Pattaya doesn’t bring big swings in temperature. The main thing that changes is the rain.
September and October are wetter, while November starts to dry out. Despite the rain, temperatures barely budge.
September averages 30.2°C in the day and 27.3°C at night, October is about the same, and November holds at 30.5°C in the day and 26.1°C at night.
That’s just how it goes in a tropical climate—seasons change more because of rain than temperature. You can count on steady warmth no matter when you visit in the fall.
Rainfall and the Rainy Season
Rainfall peaks in Pattaya during late summer and fall, shaping travel plans and daily routines. September brings high totals, and showers remain frequent through October.
By November, rain drops off sharply as the cool, dry season begins.
Monthly Rainfall Amounts
The rainy season usually runs from June to October, with September as the wettest month. September averages over 220 mm of rain, spread out over more than two weeks.
October stays wet, though totals drop a bit to around 130–150 mm. In November, rainfall plummets to less than 50 mm.
December is usually the driest, with barely a sprinkle. Fall really is a season of contrasts—heavy rain at first, then much drier by the end.
| Month | Avg. Rainfall (mm) | Rainy Days |
|---|---|---|
| September | ~229 | ~17 |
| October | ~140 | ~12 |
| November | ~40–50 | ~4–5 |
You can see how quickly Pattaya’s weather changes as fall moves along.
Frequency and Intensity of Showers
Rain in the peak months comes in short but intense bursts. It’s not usually an all-day affair.
You’ll often get heavy showers in the afternoon or evening, then clear skies after. That’s pretty typical for the tropics and means you can squeeze in outdoor activities between storms.
September’s thunderstorms show up a lot, and the high humidity makes them feel even more intense. October still brings storms, but not as many.
By November, rainy days drop off sharply, and storms lose their punch. Sometimes, heavy rain causes flooding in low-lying spots, especially in September.
But the water usually recedes quickly once the skies clear.
Transition From Rainy to Cool Season
By late October, Pattaya starts to leave the rainy season behind. You’ll see fewer storm clouds, longer sunny spells, and less humidity.
Daytime highs stay warm, around 30–32°C, but nights begin to feel just a bit cooler. In November, the weather finally settles down.
Rain becomes rare, and it turns dry and comfortable. This is when Thailand’s cool season kicks in, and visitors start to pour in.
Early fall means you need to prep for wet weather, while late fall gives you more reliable sunshine and hardly any rain.
Sunshine, Cloud Cover, and Daylight Hours
Fall in Pattaya brings a mix of sun, clouds, and changing daylight. These things shape what you can do outside and how comfortable you’ll feel at the beach or around town.
Average Sunshine Hours
Expect moderate sunshine during fall. September is the cloudiest and wettest, with only about 3.7 hours of sun per day and 110 hours in the whole month.
By October, things brighten up a bit—sunshine averages 4–5 hours daily as the rain lets up. November is much sunnier, often with 6–7 hours per day.
That makes it one of the more pleasant months for outdoor plans.
You’ll really notice the difference between early and late fall. September feels gloomy and humid, but November is brighter and drier.
Cloudiness Patterns
Cloud cover follows the monsoon’s rhythm. September usually brings the thickest clouds, with overcast skies most of the day.
That’s tied to all the rain and frequent showers. October still has lots of clouds, but you’ll start to get more sun between storms.
November finally brings clearer skies and less cloud cover. Expect higher humidity and more gray days in September, but November has lighter clouds and clearer mornings.
The change in cloudiness really affects how bright Pattaya feels as fall goes on.
Length of Daylight
Daylight hours in Pattaya barely change through the year, thanks to the tropical location. In fall, you get about 11.7 to 12 hours of daylight each day.
In September, the sun rises around 6:00 AM and sets near 6:15 PM. By November, sunrise is closer to 6:15 AM and sunset around 5:50 PM.
Unlike sunshine hours, the amount of daylight doesn’t really shift. What matters more is how clouds and rain limit your usable daylight—especially in September, when it stays pretty dim.
Sea Conditions and Outdoor Activities
During fall, Pattaya’s sea stays warm and tempting, but rain patterns decide how often you’ll get out for outdoor plans.
High sea temperatures and changing weather mean you’ll want to pick your activities based on the month.
Sea Temperature and Swimming Conditions
The Gulf of Thailand keeps sea temps steady in fall, averaging 29–30°C (84–86°F). That’s perfect for swimming, snorkeling, or other water sports.
You won’t need a wetsuit, and the water feels good even in the evening.
September and October bring more rain, which can muddy up the water and lower visibility for snorkeling or diving. But things usually clear up pretty quickly after a storm.
By November, rain drops off, and the sea calms down with more sunny days.
Waves stay small compared to open-ocean beaches, so Pattaya works well for casual swimmers. If you want the calmest water, try to hit the beach in the morning when winds are lightest.
Best Activities for Fall Weather
Fall weather gives you a chance to enjoy both water and land activities, but you’ll want to pay attention to the timing.
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September–October: You’ll probably run into more rain, so it makes sense to check out indoor spots like shopping centers, cultural shows, or maybe an aquarium when it’s wet outside. If the sky clears up, people often head out for short boat trips or even try jet skiing.
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November: There’s usually less rain and more sunshine, so you can count on beach lounging, parasailing, or island-hopping tours being available more often.
You might like strolling along the waterfront or wandering through local parks. Even in the rainier months, mornings usually start off dry, offering a good window to get outside before the afternoon showers roll in.
Impact of Weather on Tourism
Tourism changes in the fall as the rainy season starts to fade. In September and October, fewer travelers show up, so you’ll see emptier beaches and hotels often drop their rates.
If you don’t mind the occasional downpour, it’s a quieter time to visit.
By November, more tourists arrive as the weather settles down. Hotels and tours fill up, and outdoor venues start hosting more events.
Travel Tips for Visiting Pattaya in Fall
Pattaya’s fall is still part of the rainy season, which usually runs from June through October. You’ll notice high humidity, frequent afternoon showers, and sometimes heavy downpours, but you’ll also get plenty of dry, sunny stretches.
It’s smart to plan ahead so you can stay comfortable and flexible if the weather shifts.
What to Pack for Fall Weather
Pack lightweight, breathable clothing because it stays warm, even when it rains. Cotton or linen works well in the humid air. You’ll want a light rain jacket or a small umbrella since rain can show up out of nowhere.
Shoes or sandals with good grip help when streets get slick. A small waterproof bag or pouch keeps your phone, wallet, and travel documents dry.
The sun still shines between rain showers, so sunscreen, sunglasses, and a hat are must-haves. Most people also pack insect repellent, especially for evenings or if you’ll be near standing water. Bring a mix of casual clothes and beachwear to cover whatever you feel like doing in Pattaya.
Health and Safety Considerations
You might run into slippery sidewalks and wet roads during the rainy season, so walk carefully and give yourself extra time to get around. Some low-lying areas flood, but the water usually drains away pretty fast.
Drink plenty of water since the heat and humidity can wear you out. Bottled water is everywhere, and it’s a safe bet. If you want to swim or try water sports, check local safety flags and warnings, because the sea can get rough during this time.
Mosquitoes tend to show up after it rains. Repellent and long sleeves in the evening help keep bites away. If you need medical care, you’ll find lots of pharmacies and clinics around Pattaya.
Advantages of Visiting During Fall
If you head to Pattaya in the fall, you’ll notice lower crowd levels right away. Fewer tourists show up compared to the cool season, so beaches and restaurants feel a lot more relaxed.
Hotels and resorts usually drop their rates, too. You might even stumble across some great deals on tours or activities if you look around.
All that rain? It actually turns the landscape a lot greener. Parks, gardens, and the countryside nearby really come alive, and honestly, it feels like a different side of Thailand than what you’d see in the hotter or cooler months.