What to pack for Chiang Mai in May
- light, breathable clothing
- sun protection (hat, SPF 50)
- a compact umbrella or rain shell — rain is frequent
Humidity averages 70%; max daily wind around 11 km/h.
How May compares
Best months in Chiang Mai: December–January. See the full best time to visit Chiang Mai guide.
Chiang Mai in May: the details
In May, Chiang Mai sees average daytime highs of 34°C (94°F) and overnight lows of 25°C (76°F). Rainfall totals roughly 225 mm across 19.3 rainy days, and the sun shines about 10.7 hours per day with 12.9 hours of daylight mid-month. Relative humidity averages 70%.
In context: May is the third-warmest month and the 5th-wettest in Chiang Mai. The sunniest month is April (10.9 h/day).
| Metric | May average |
|---|---|
| Daytime high | 34°C / 94°F |
| Overnight low | 25°C / 76°F |
| Rainfall | 225 mm over 19.3 rainy days |
| Sunshine | 10.7 h/day (12.9 h daylight) |
| Humidity | 70% |
| Travel score | 1.7 / 10 |
These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Chiang Mai, Thailand (18.79, 98.98) — see our methodology. Actual conditions vary year to year.
Not set on Chiang Mai? Browse the best places to visit in May ranked by travel score.
Frequently asked questions
How hot is Chiang Mai in May?
Daytime highs in Chiang Mai in May average 34°C (94°F); nights drop to about 25°C.
Does it rain in Chiang Mai in May?
Expect around 19.3 rainy days and 225 mm of rainfall in May.
Is May a good time to visit Chiang Mai?
May is a challenging month to visit Chiang Mai — consider December–January instead. Overall travel score: 1.7/10. The best months are December–January.
Also good in May, near Chiang Mai
Where should you go next month?
Get one email a month with the destinations at their seasonal best. Double opt-in, unsubscribe anytime.