Chiang Mai weather in May
Chiang Mai in May averages 29°C (85°F), 164 mm of rain and 6.7 hours of sun a day. It is one of the wetter months of the year here.
Of the twelve months in Chiang Mai, May is the second warmest, the third wettest and the sixth dullest.
- Average temp
- 29°C (85°F)
24–35°C · 75–94°F
- Rainfall
- 164 mm
A wet month
- Sunshine
- 6.7 h
hours per day
What is Chiang Mai like in May?
Daytime
Days are hot, often above 32°C.
Rain
Expect frequent rain — this is a wet month.
Evening
Evenings stay warm.
What should I pack for Chiang Mai in May?
High-factor sun cream
With daytime highs around 35°C, burn time is short even in shade.
Sunglasses and a brimmed hat
Midday glare is the part people underpack for, not the heat itself.
Loose cotton or linen
Synthetics stop working once you are sweating through them all day.
A refillable water bottle
Daily highs this warm need roughly double the water a temperate day does.
A proper waterproof, not a folding umbrella
164 mm in the month usually arrives as heavy bursts that an umbrella will not cover.
A dry bag for phone and documents
Worth it for one downpour caught between the taxi and the door.
May compared with April and June
May in Chiang Mai is 0.6°C cooler than April and 107 mm wetter than it, which averages 30°C (86°F).
May in Chiang Mai is 0.6°C warmer than June and 53 mm wetter than it, which averages 29°C (84°F).
Daylight in Chiang Mai in May
On 15 May the sun is up for 13 hours 1 minute in Chiang Mai, rising about 05:49 and setting about 18:51 local time.
May ends 21 minutes longer than it begins, so the last week of the month is a different length of day from the first.
Where to stay in Chiang Mai
Dates are a starting point for May.
Travel guides for Chiang Mai
What to read before you book.
Chiang Mai weather by month
TemperatureRainfall
How May compares with the rest of the year
May is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | 23°C / 73°F | 8 mm |
| February | 25°C / 77°F | 9 mm |
| March | 28°C / 82°F | 22 mm |
| April | 30°C / 86°F | 56 mm |
| May | 29°C / 85°F | 164 mm |
| June | 29°C / 84°F | 111 mm |
| July | 28°C / 83°F | 153 mm |
| August | 28°C / 82°F | 234 mm |
| September | 28°C / 82°F | 218 mm |
| October | 27°C / 81°F | 118 mm |
| November | 26°C / 78°F | 39 mm |
| December | 23°C / 74°F | 14 mm |
Similar weather in May
Other destinations whose May averages sit close to this one.
Check another month
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FAQs about Chiang Mai in May
May climate averages for Chiang Mai, 1991–2020.
Chiang Mai averages 29°C (85°F) in May, ranging from about 24°C (75°F) at night to 35°C (94°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Yes, a lot. May brings about 164 mm, which makes it one of the wetter months here — expect heavy bursts rather than all-day drizzle.
Yes. May averages 29°C (85°F) against 29°C (84°F) in June — 0.6°C warmer.
May is 0.6°C cooler than April, and 107 mm wetter.
It is outside the easiest window. The most comfortable stretch here is October to March; May sits outside it, which usually means more heat, more rain, or both — worth it if you would rather have the place to yourself.
About 6.7 hours of sun a day on the 1991–2020 average.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what May is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 13 hours 1 minute of daylight in mid-May, against 13 hours 15 minutes in June and 11 hours 1 minute in December.
On 15 May, sunrise is about 05:49 and sunset about 18:51 local time. Both shift across the month — the month ends 21 minutes longer than it starts.
