Phra Nakhon Si Ayutthaya is rarely comfortable to be outside at midday. It comes closest in late December, and even then it is too hot. Sunbathing weather is not what it offers.
When to go five ratings · thirty-six ten-day sections · click a cell to read it
Phra Nakhon Si Ayutthaya never quite rates Good for sun. It comes closest in late December, at 51, mostly because it is often wet. Avoid mid April to June for this: it falls to 2, mostly because it is too hot. The clearest skies come in December, when the sky is typically 45% covered at midday (partly cloudy).
Being outside is not what Phra Nakhon Si Ayutthaya is for: the Easy outdoors rating tops out at 18, mostly because it is too hot.
Walking is not what Phra Nakhon Si Ayutthaya is for: the Active outdoors rating tops out at 5, mostly because it is too warm.
The year, measured
The average temperature in Phra Nakhon Si Ayutthaya over the whole year is 29°C. April is the hottest month, with highs of about 35°C; January is the coldest, with lows of about 22°C. Phra Nakhon Si Ayutthaya has no sharply defined rainy season: the chance of rain on a given day runs from 43% in January, the driest month, to 64% in October, the wettest. Winds in Phra Nakhon Si Ayutthaya are highest in March, averaging 1.8 m/s (6 km/h), and lightest in October, at 1.2 m/s (4 km/h). The prevailing wind is from the S. The clearest skies in Phra Nakhon Si Ayutthaya come in February, when the sky is typically 42% covered; July is the cloudiest month, at 77%.
Month by month Phra Nakhon Si Ayutthaya climate by month: average temperatures year round · click a month to read it
| Month | High | Low | Feels like | Chance of rain | Cloud | Wind | Being outside | Sun | Walking |
|---|---|---|---|---|---|---|---|---|---|
| January | 31°C | 22°C | 33°C | 43% | 44% | 1.4 m/s | 12 | 40 | 4 |
| February | 32°C | 24°C | 35°C | 44% | 42% | 1.6 m/s | 5 | 27 | 1 |
| March | 34°C | 26°C | 38°C | 62% | 46% | 1.8 m/s | 1 | 9 | 0 |
| April | 35°C | 27°C | 39°C | 58% | 50% | 1.8 m/s | 2 | 5 | 0 |
| May | 34°C | 27°C | 39°C | 61% | 64% | 1.6 m/s | 0 | 4 | 0 |
| June | 33°C | 27°C | 38°C | 55% | 70% | 1.8 m/s | 0 | 6 | 0 |
| July | 32°C | 27°C | 37°C | 55% | 77% | 1.7 m/s | 0 | 10 | 0 |
| August | 33°C | 27°C | 37°C | 56% | 77% | 1.7 m/s | 0 | 8 | 0 |
| September | 32°C | 26°C | 37°C | 63% | 76% | 1.3 m/s | 0 | 9 | 0 |
| October | 32°C | 26°C | 37°C | 64% | 66% | 1.2 m/s | 1 | 12 | 0 |
| November | 32°C | 25°C | 35°C | 55% | 53% | 1.4 m/s | 3 | 28 | 0 |
| December | 31°C | 23°C | 32°C | 52% | 43% | 1.7 m/s | 15 | 48 | 4 |
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Phra Nakhon Si Ayutthaya weather by season
Year round, Phra Nakhon Si Ayutthaya has days of about 31°C at their warmest in December, its coolest month, and 35°C in April, its warmest; the coolest hours of the day run from 22°C to 27°C through the year, and the average temperature over the year is 29°C around the clock. Rain is most likely around October and least likely around January. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Phra Nakhon Si Ayutthaya weather in winterDecember to February
Winter in Phra Nakhon Si Ayutthaya has typical daily highs of about 31°C and lows of about 23°C, with a 46% chance of rain on a given day.
Phra Nakhon Si Ayutthaya weather in springMarch to May
Spring in Phra Nakhon Si Ayutthaya has typical daily highs of about 34°C and lows of about 27°C, with a 60% chance of rain on a given day.
Phra Nakhon Si Ayutthaya weather in summerJune to August
Summer in Phra Nakhon Si Ayutthaya has typical daily highs of about 33°C and lows of about 27°C, with a 55% chance of rain on a given day.
Phra Nakhon Si Ayutthaya weather in autumnSeptember to November
Autumn in Phra Nakhon Si Ayutthaya has typical daily highs of about 32°C and lows of about 26°C, with a 61% chance of rain on a given day.
When is the rainy season in Phra Nakhon Si Ayutthaya?
Phra Nakhon Si Ayutthaya has no sharply defined rainy season: the chance of rain on a given day runs from 43% in January, the driest month, to 64% in October, the wettest.
What time of year is Phra Nakhon Si Ayutthaya windiest?
Winds in Phra Nakhon Si Ayutthaya are highest in March, averaging 1.8 m/s (6 km/h), and lightest in October, at 1.2 m/s (4 km/h). The prevailing wind is from the S.
What is the average temperature in Phra Nakhon Si Ayutthaya year round?
The average temperature in Phra Nakhon Si Ayutthaya over the whole year is 29°C. April is the hottest month, with highs of about 35°C; January is the coldest, with lows of about 22°C.
Where to go instead in late March, the weakest time here for being outside
How this is worked out
Every figure is a decade of weather-station observations blended into one typical year, in ten-day sections. The ratings, the chart and the feels-like column are read at midday local solar time. Being outside is the Easy outdoors rating, Sun is Sunbathing and Walking is Active outdoors, each out of 100: Good from 55, Ideal from 80. They describe what a time of year is usually like here, not a forecast. The dotted links open the map at that time of year; set its time of day to midday to see these numbers.