Ayutthaya weather in July
July in Ayutthaya: sweltering, soaked, with clean air — a gamble, with 25 rainy days.
Updated September 2026 · climate normals from ERA5 reanalysis
#8 of 12 months in Ayutthaya · #1141 of 1413 destinations to visit in July · comfort 55/100 (tier D)
- Days
- 34°C
- Nights
- 25°C
- Wet days
- 25
- Sun
- 8.4 h
- Humidity
- 78%
- Daylight
- 13 h
Traveller notes on Ayutthaya in July
Other months in Ayutthaya
Thailand's forum is consistent that June sits in a relative lull between the wetter bookends of May and September - it's still hot and humid nationwide, and Ayutthaya specifically gets called out as brutal around midday, but the rain itself is usually a shower rather than an all-day event. Forum regulars who visited Ayutthaya in June had a genuinely good time, describing it as hot and humid with manageable showers rather than a washout. The advice that comes up again and again is to tour the temple ruins early in the morning and save the hottest hours for indoor breaks.
Forum posters describe December as highly predictable and among the most pleasant months across central Thailand generally, with hot daytime temperatures (commonly reaching into the low 30sC), clear skies and minimal rain, while evenings cool into the low-20s or even high-teensC - genuinely comfortable by regional standards. This makes December squarely inside Thailand's cool, dry high season, good conditions for exploring Ayutthaya's outdoor temple ruins on foot without the wet-season rain risk. The clear tradeoff posters note for the broader region this time of year: December is also peak tourist season, so popular sites and accommodations get busy and should be booked ahead.
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Ayutthaya climate normals — July
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Ayutthaya in July
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Shoulder seasonschool holidays in 5 of the markets that fill it, an ordinary month(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Ayutthaya's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherAyutthaya's weather peaks December–February.
Best weatherFair weatherToughest weather
What's on in Ayutthaya in July
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Festival
Asalha Bucha and Khao Phansa
5 Jul – 5 Aug · usuallyReligious feastTwo back-to-back holy days that open Buddhist Lent. Around Ayutthaya the Lent candles go to the temples by boat along Khlong Lat Chado, and alcohol sales are banned nationwide on both days. Source ↗
Nearby, and something's on
Within 300 km of Ayutthaya — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Ayutthaya?
Ayutthaya in July — FAQ
- Is July a good time to visit Ayutthaya?
- July in Ayutthaya: sweltering, soaked, with clean air — a gamble, with 25 rainy days. It ranks #8 of 12 months for Ayutthaya on SeasonMap's comfort score (55/100).
- What is the weather like in Ayutthaya in July?
- In July, Ayutthaya averages a daily high of 33.5°C and a low of 25°C, with about 170.8 mm of rain over roughly 25.3 rainy days.
- What is the air quality in Ayutthaya in July?
- Ayutthaya has a mean US Air Quality Index of about 48 in July.
Within 300 km: Bangkok's Asalha Bucha and Khao Phansa on 29–30 Jul, and Pattaya's Southwest monsoon around 15 May – 31 Oct.