Udon Thani is rarely comfortable to be outside at midday. It comes closest in late December, and even then it is too hot. For sun, aim for late November to mid February.
When to go five ratings · thirty-six ten-day sections · click a cell to read it
For sun, go from late November to mid February. It peaks in early January, at 70. Avoid mid April to June for this: it falls to 8, mostly because it is too hot. The clearest skies come in February, when the sky is typically 30% covered at midday (mostly clear).
Udon Thani never quite rates Good for being outside. It comes closest in late December, at 44, mostly because it is too hot. The weakest stretch is from mid April to October, when it drops to 0, mostly because it is too hot.
Walking is not what Udon Thani is for: the Active outdoors rating tops out at 17, mostly because it is too warm.
The year, measured
The average temperature in Udon Thani over the whole year is 27°C. April is the hottest month, with highs of about 34°C; January is the coldest, with lows of about 18°C. The rainy (wet) season in Udon Thani runs from February to October, peaking in September with a 66% chance of rain on a given day. The dry season is November to January; December is the driest month, at 31%. Winds in Udon Thani are highest in February, averaging 1.4 m/s (5 km/h), and lightest in October, at 1.2 m/s (4 km/h). The prevailing wind is from the E. The clearest skies in Udon Thani come in February, when the sky is typically 29% covered; August is the cloudiest month, at 73%.
Month by month Udon Thani 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 | 28°C | 18°C | 28°C | 42% | 34% | 1.3 m/s | 35 | 66 | 14 |
| February | 29°C | 19°C | 30°C | 54% | 29% | 1.4 m/s | 28 | 55 | 10 |
| March | 32°C | 22°C | 34°C | 53% | 34% | 1.4 m/s | 9 | 28 | 2 |
| April | 34°C | 25°C | 37°C | 56% | 41% | 1.4 m/s | 3 | 14 | 1 |
| May | 33°C | 26°C | 37°C | 66% | 58% | 1.4 m/s | 1 | 10 | 0 |
| June | 32°C | 26°C | 37°C | 64% | 67% | 1.3 m/s | 0 | 9 | 0 |
| July | 31°C | 25°C | 36°C | 63% | 71% | 1.4 m/s | 1 | 17 | 0 |
| August | 31°C | 25°C | 35°C | 65% | 73% | 1.3 m/s | 1 | 17 | 0 |
| September | 31°C | 25°C | 35°C | 66% | 66% | 1.3 m/s | 1 | 18 | 0 |
| October | 31°C | 24°C | 34°C | 59% | 51% | 1.2 m/s | 4 | 34 | 0 |
| November | 30°C | 21°C | 32°C | 40% | 36% | 1.2 m/s | 11 | 55 | 2 |
| December | 28°C | 18°C | 28°C | 31% | 30% | 1.3 m/s | 38 | 62 | 14 |
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 Udon Thani weather by season
Year round, Udon Thani has days of about 28°C at their warmest in January, its coolest month, and 34°C in April, its warmest; the coolest hours of the day run from 18°C to 26°C through the year, and the average temperature over the year is 27°C around the clock. Rain is most likely around September and least likely around December. 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.
Udon Thani weather in winterDecember to February
Winter in Udon Thani has typical daily highs of about 28°C and lows of about 18°C, with a 42% chance of rain on a given day.
Udon Thani weather in springMarch to May
Spring in Udon Thani has typical daily highs of about 33°C and lows of about 24°C, with a 58% chance of rain on a given day.
Udon Thani weather in summerJune to August
Summer in Udon Thani has typical daily highs of about 31°C and lows of about 26°C, with a 64% chance of rain on a given day.
Udon Thani weather in autumnSeptember to November
Autumn in Udon Thani has typical daily highs of about 30°C and lows of about 23°C, with a 55% chance of rain on a given day.
When is the rainy season in Udon Thani?
The rainy (wet) season in Udon Thani runs from February to October, peaking in September with a 66% chance of rain on a given day. The dry season is November to January; December is the driest month, at 31%.
What time of year is Udon Thani windiest?
Winds in Udon Thani are highest in February, averaging 1.4 m/s (5 km/h), and lightest in October, at 1.2 m/s (4 km/h). The prevailing wind is from the E.
What is the average temperature in Udon Thani year round?
The average temperature in Udon Thani over the whole year is 27°C. April is the hottest month, with highs of about 34°C; January is the coldest, with lows of about 18°C.
Where to go instead in late May, 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.