Ayutthaya weather in May
May in Ayutthaya: sweltering, rainy, with poor air quality — a gamble, with poor air.
#10 of 12 months in Ayutthaya · #846 of 897 destinations to visit in May · comfort 56/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Ayutthaya in May
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Ayutthaya climate normals — May
| Daytime high | 35°C / 95°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 27°C / 80°F | |
| Rainfall | 123 mm / 4.9 in | 🌧 rainy |
| Rainy days | 17 days | |
| Humidity | 72% | 💧 humid |
| Dew point | 24°C / 74°F | |
| Sunshine | 10.3 h/day | |
| Daylight | 12.8 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 108 | 😷 poor |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Ayutthaya in May — FAQ
- Is May a good time to visit Ayutthaya?
- May in Ayutthaya: sweltering, rainy, with poor air quality — a gamble, with poor air. It ranks #10 of 12 months for Ayutthaya on SeasonMap's comfort score (56/100).
- What is the weather like in Ayutthaya in May?
- In May, Ayutthaya averages a daily high of 34.8°C and a low of 26.5°C, with about 123.3 mm of rain over roughly 17.4 rainy days.
- What is the air quality in Ayutthaya in May?
- Ayutthaya has a mean US Air Quality Index of about 108 in May.