Thailand Chiang Mai Weather in May — Climate Guide
May in Chiang Mai is moderate
Chiang Mai Weather in May — Quick Answer
As of 2026- Avg temp
- 34° / 23°
- Rainfall
- 150mm · 11 days
- Crowds
- Quiet
As of 2026, Chiang Mai in May averages a high of 34°C and low of 23°C with 150mm of rain over about 11 days. Hot + humid + rain starts. T-shirt + light raincoat.
May is moderate for Chiang Mai.
Burning season ENDS mid-May. Rainy season starts but countryside lush. Hotels cheap. Crowd-free.
Travel score
Chiang Mai May Weather Stats
Avg High
34°C
Avg Low
23°C
Rainy Days
11
150mm total
Sunshine
7h
Daily avg
Humidity
75%
high
UV Index
11
Extreme
Wind
7 km/h
Gusts 18
Sea Temp
0°C
no swimming
Crowds
Quiet
At attractions
May Sunrise & Sunset
Air Quality
PM2.5
30 μg/m³
PM10
55 μg/m³
Status
moderate
Feels-Like Temperature & Wind
Feels like
Daytime
37°C
Nighttime
24°C
Humidity and wind affect how the actual temperature feels.
Wind
7 km/h
Max gust 18 km/h
Activities Recommended for May
May Travel Pros & Cons
Pros
- Burning season ends
- Hotels drop 40-50%
- Low crowds
- Lush countryside starts
Cons
- 150mm rain begins
- Humid 75%
- Afternoon storms
May Events & Festivals
- Burning season ends mid-May
- Rainy season begins
Chiang Mai in May — Full Picture
Burning season ENDS mid-May. Rainy season starts but countryside lush. Hotels cheap. Crowd-free.
What to Wear & What to Pack
Hot + humid + rain starts. T-shirt + light raincoat.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
Current34.7°C
22°C
6.3/mo
Summer (Jun·Jul·Aug)
32°C
23°C
14.3/mo
Autumn (Sep·Oct·Nov)
30.3°C
21°C
11.3/mo
Winter (Dec·Jan·Feb)
29°C
15.7°C
2/mo
Chiang Mai Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| January (Best) | 28° | 15° | 2d·10mm | 8h | 65% | 7 | Very busy | Peak |
| February (Best) | 31° | 17° | 2d·10mm | 9h | 60% | 8 | Very busy | Peak |
| 34° | 20° | 3d·25mm | 9h | 60% | 10 | Busy | Shoulder | |
| 36° | 23° | 5d·50mm | 8h | 65% | 11 | Busy | Peak | |
| 34° | 23° | 11d·150mm | 7h | 75% | 11 | Quiet | Low season | |
| 32° | 23° | 13d·130mm | 6h | 80% | 10 | Quiet | Low season | |
| 32° | 23° | 14d·150mm | 6h | 80% | 10 | Moderate | Shoulder | |
| 32° | 23° | 16d·175mm | 6h | 82% | 9 | Moderate | Shoulder | |
| 32° | 23° | 17d·200mm | 6h | 82% | 8 | Quiet | Low season | |
| 30° | 22° | 12d·130mm | 7h | 80% | 8 | Moderate | Shoulder | |
| November (Best) | 29° | 18° | 5d·50mm | 8h | 70% | 7 | Very busy | Peak |
| December (Best) | 28° | 15° | 2d·15mm | 8h | 65% | 7 | Very busy | Peak |
View Other Months
Chiang Mai May Hotel Picks
Frequently Asked Questions
Is May a good time to visit Chiang Mai?
Chiang Mai in May is moderate. Tourist crowds are quiet and flight/hotel prices are low season.
What's the average temperature in Chiang Mai in May?
Chiang Mai May averages a high of 34°C and a low of 23°C.
Does it rain much in Chiang Mai in May?
Chiang Mai May averages 150mm of rainfall over about 11 rainy days.
What should I wear in Chiang Mai in May?
Hot + humid + rain starts. T-shirt + light raincoat.
What time are sunrise and sunset in Chiang Mai in May?
Chiang Mai May sunrise is 05:55 and sunset is 18:45, with 12h 50min of daylight.
What's the air quality like in Chiang Mai in May?
Chiang Mai May air quality (AQI) averages 75, rated Moderate. PM2.5 averages 30μg/m³.
What activities are recommended in Chiang Mai in May?
In May, Chiang Mai is great for Indoor: cooking class, Elephant Park (lush green), Doi Inthanon.
Is May peak season in Chiang Mai?
Chiang Mai May crowds are quiet and prices are low season. You can travel relatively comfortably without long queues.
Best Months to Visit Chiang Mai
View Other Months
Planning a May trip to Chiang Mai?
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.