Ayutthaya Temperature by Month

Ayutthaya in Phra Nakhon Si Ayutthaya Province, Thailand enjoys a stable climate, with daytime temperatures staying close to 35°C (95°F) throughout the year. Explore the full monthly breakdown below.

The temperature in Ayutthaya remains steady throughout the year, providing a consistently very hot climate. Maximum daytime temperatures range from a very hot 38°C (100°F) in April to a very warm 34°C (93°F) in December. Nights are mild year-round, with lows ranging from 27°C (81°F) in April to 22°C (72°F) in December.

The chart below illustrates the average maximum day and minimum night temperatures in Ayutthaya by month:

The coolest part of the day is typically between 4 AM and 6 AM, while 3 PM is usually the warmest, when solar heating is at its peak. April, the city's warmest month, averages 257 hours of sunshine.

The chart below shows the average temperature throughout the year:

Ayutthaya's average annual maximum temperature is 35°C (95°F). To put that in context, here's how it compares to a few well-known destinations:

Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.

On the cooler end, Oslo, Norway averages just 10°C (50°F) annually, with pleasant summers but long, cold winters.

San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation, summers are often cool and foggy, winters mild.

Melbourne, Australia averages 20°C (68°F) annually, known for unpredictable weather, with four seasons sometimes happening in one day.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In Ayutthaya, December is the coolest month, with average highs of 34°C (93°F) and humidity around 68%, considered high. In April, the warmest month, temperatures average 38°C (100°F) with 72% humidity, conditions that feel high. For a full picture, see our humidity page.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round, large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.

For more on Ayutthaya's weather, including monthly rainfall, sunshine hours, and humidity, visit our Ayutthaya climate page.