Thailand
Chiang Mai in May: weather & travel advice
This month's data profile
Rain shapes the decision
Chiang Mai in May is climatically mixed. The average daily high is around 32 °C. With about 22 rainy days it is very wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
40/100 · #12
Warmth
#3
Dryness
#8
Sun
#3
Published best categories: none
Chiang Mai · MayPhoto: Philip Nalangan · CC BY 4.0Climate facts
- Average high
- 32 °C
- Average low
- 21 °C
- Rainy days (est.)
- 22 rainy days (est.)
- Sun (est.)
- 7 h/day
- Humidity
- 74 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Score |
|---|---|---|---|---|---|---|---|---|
| April | 34 | 21 | 11 | 67 | 7.6 | 57 | 0.1 | 51 |
| May (selected) | 32 | 21 | 22 | 181 | 7.0 | 74 | 0.0 | 40 |
| June | 30 | 21 | 22 | 136 | 5.9 | 81 | 0.0 | 44 |
How do the previous and next months compare?
Baseline: May (40/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | |
|---|---|---|---|---|---|---|---|---|
| April | +11 | +2.7 °C | -0.7 °C | -10.9 | -114.1 mm | +0.6 h | -17.3 % | ±0 m/s |
| June | +4 | -1.5 °C | -0.1 °C | +0.6 | -45.9 mm | -1.1 h | +6.5 % | ±0 m/s |
All twelve months in context

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Where to stay in Chiang Mai
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Useful next decisions
Frequently asked questions
How warm is Chiang Mai in May?
The average daily high is around 32 °C, with an average daily low of about 21 °C.
Does it rain a lot in Chiang Mai in May?
The curated estimate is about 22 rainy days per month, not a directly measured long-term average. Total precipitation averages around 181 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Chiang Mai?
By the climate score, January, February, November and December are the strongest months for Chiang Mai. May is not among them.