Thailand Pattaya Weather in May — Climate Guide
May in Pattaya is moderate
Pattaya Weather in May — Quick Answer
As of 2026- Avg temp
- 34° / 27°
- Rainfall
- 165mm · 12 days
- Crowds
- Moderate
As of 2026, Pattaya in May averages a high of 34°C and low of 27°C with 165mm of rain over about 12 days. Wet season begins — hot and humid at 34°C/27°C with frequent heavy afternoon showers. Light clothing, swimwear, a packable rain jacket or umbrella, and quick-dry footwear. UV is still extreme between storms.
May is moderate for Pattaya.
May is the transition into the green (wet) season — still hot and humid at around 34°C/27°C, but with a clear jump in rain (about 165mm), usually as heavy but short afternoon or evening downpours rather than all-day rain. Mornings are often sunny.
With peak season over, crowds thin and prices drop — May is good value, and the landscapes turn lush and green. The warm sea is still very swimmable, and Koh Larn is doable on calmer days, though the seas are less consistently flat than in the dry months.
Travel score
Pattaya May Weather Stats
Avg High
34°C
Avg Low
27°C
Rainy Days
12
165mm total
Sunshine
7h
Daily avg
Humidity
76%
muggy
UV Index
11
Extreme
Wind
10 km/h
Gusts 22
Sea Temp
30°C
Avg water temp
Crowds
Moderate
At attractions
May Sunrise & Sunset
Air Quality
PM2.5
20 μg/m³
PM10
36 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
41°C
Nighttime
30°C
Humidity and wind affect how the actual temperature feels.
Wind
10 km/h
Max gust 22 km/h
Activities Recommended for May
May Travel Pros & Cons
Pros
- Lower prices, fewer crowds
- Sunny mornings, short afternoon storms
- Warm swimmable sea
- Lush green scenery
Cons
- Rain increases markedly
- Humid and hot
- Less reliable ferry conditions
- Afternoon plans need flexibility
May Events & Festivals
- Start of the green/wet season — afternoon downpours
- Lower prices and thinner crowds begin
- Warm sea continues
- Lush green landscapes
Pattaya in May — Full Picture
May is the transition into the green (wet) season — still hot and humid at around 34°C/27°C, but with a clear jump in rain (about 165mm), usually as heavy but short afternoon or evening downpours rather than all-day rain. Mornings are often sunny.
With peak season over, crowds thin and prices drop — May is good value, and the landscapes turn lush and green. The warm sea is still very swimmable, and Koh Larn is doable on calmer days, though the seas are less consistently flat than in the dry months.
The practical move is to front-load outdoor plans to the morning and keep flexible afternoon options (malls, spa, indoor attractions) for when the rain comes through. Carry a compact rain jacket or umbrella, and check the ferry conditions before committing to an island day. UV stays high in the sunny spells.
What to Wear & What to Pack
Wet season begins — hot and humid at 34°C/27°C with frequent heavy afternoon showers. Light clothing, swimwear, a packable rain jacket or umbrella, and quick-dry footwear. UV is still extreme between storms.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
Current34.3°C
26.7°C
7/mo
Summer (Jun·Jul·Aug)
33°C
26.3°C
13/mo
Autumn (Sep·Oct·Nov)
32°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 May Hotel Picks
Frequently Asked Questions
Is May a good time to visit Pattaya?
Pattaya in May is moderate. Tourist crowds are moderate and flight/hotel prices are shoulder.
What's the average temperature in Pattaya in May?
Pattaya May averages a high of 34°C and a low of 27°C.
Does it rain much in Pattaya in May?
Pattaya May averages 165mm of rainfall over about 12 rainy days.
What should I wear in Pattaya in May?
Wet season begins — hot and humid at 34°C/27°C with frequent heavy afternoon showers. Light clothing, swimwear, a packable rain jacket or umbrella, and quick-dry footwear. UV is still extreme between storms.
What time are sunrise and sunset in Pattaya in May?
Pattaya May sunrise is 06:00 and sunset is 18:30, with 12h 30min of daylight.
What's the air quality like in Pattaya in May?
Pattaya May air quality (AQI) averages 48, rated Good. PM2.5 averages 20μg/m³.
What activities are recommended in Pattaya in May?
In May, Pattaya is great for Morning beach and island time, Indoor attractions for rainy afternoons, Spa and mall breaks.
Is May peak season in Pattaya?
Pattaya May crowds are moderate and prices are shoulder. You can travel relatively comfortably without long queues.
Best Months to Visit Pattaya
View Other Months
Planning a May trip to Pattaya?
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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.