May · Thailand
Best time to visit Chiang Rai in May Weather, crowds & prices
Weather in Chiang Rai in May
Average temperature 28°C, 165 mm of rain, about 24 days with 6+ hours of sunshine and 71% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
May score
4.4/10
Ranked #8 of 12 months
- Avg temp
- 28°C
- Rainfall
- 165 mm
- Humidity
- 71%
- Days with 6h+ sun
- 24
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
May in Chiang Rai scores 4.4/10 for sightseeing and cultural travel - ranked #8 of 12. Expect around 28°C, 165 mm of rain, and roughly 24 days with 6+ hours of sunshine this month.
Chiang Rai's white temple, golden clock tower and hill villages fill Thailand's far north.
May in Chiang Rai — off-season conditions
Days in May average 28°C (82°F) and humidity near 71% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
165 mm of rain makes this a wet month here, though with about 24 days with 6+ hours of sunshine there is still bright weather between the fronts.
That is 4.4/10 on the same scale — 8th of 12 months, versus 9.8/10 for the best month here.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Budget for low-season pricing, and crowds are light for this destination.
If your dates are flexible, February is materially better in Chiang Rai — 5.4 points higher on the same scale.
Frequently asked
- What is the weather like in Chiang Rai in May?
- In May, Chiang Rai averages 28°C, 165 mm of rain, and about 24 days with 6+ hours of sunshine. Its climate-comfort score is 4.4/10.
- Is May a good time to visit Chiang Rai?
- May earns a 4.4/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Chiang Rai in May?
- Expect about 165 mm of rain in May. Average humidity is 71% and there are about 24 days with 6+ hours of sunshine.
Curated in Chiang Rai
Tickets & experiences
Things to do in Chiang Rai
Chiang Rai, Thailand. Live activities and tours from GetYourGuide, matched to this destination.