Khon Kaen climate
Khon Kaen (Thailand) has a tropical savanna (dry winter) climate (Köppen Aw). The average temperature over the year is 27 °C80 °F, and about 1,364 mm54 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Khon Kaen climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 3188 | 1762 | 2475 | 80.3 |
| Feb | 3493 | 2067 | 2780 | 160.6 |
| Mar | 3697 | 2374 | 2985 | 441.7 |
| Apr | 3798 | 2577 | 3188 | 813.2 |
| May | 3492 | 2577 | 2984 | 1787.0 |
| Jun | 3188 | 2475 | 2882 | 1787.0 |
| Jul | 3086 | 2475 | 2780 | 2238.8 |
| Aug | 3085 | 2474 | 2780 | 26410 |
| Sep | 2985 | 2374 | 2679 | 2519.9 |
| Oct | 2984 | 2171 | 2578 | 1024.0 |
| Nov | 2984 | 1966 | 2475 | 180.7 |
| Dec | 2984 | 1661 | 2373 | 40.2 |
| Year | 3798 | 1661 | 2780 | 1,36454 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 57% | 32% | 4.9 | 11:15 |
| Feb | 50% | 33% | 5.2 | 11:35 |
| Mar | 50% | 47% | 5.3 | 12:00 |
| Apr | 55% | 59% | 5.8 | 12:29 |
| May | 72% | 82% | 5.6 | 12:53 |
| Jun | 81% | 89% | 5.3 | 13:06 |
| Jul | 84% | 91% | 4.9 | 13:01 |
| Aug | 87% | 93% | 4.7 | 12:40 |
| Sep | 88% | 86% | 4.6 | 12:12 |
| Oct | 85% | 59% | 4.9 | 11:44 |
| Nov | 77% | 43% | 4.8 | 11:20 |
| Dec | 65% | 32% | 4.7 | 11:09 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Khon Kaen is like
The warmest month is April, with an average high of 37 °C98 °F and a low of 25 °C77 °F. The coldest is December, when highs average 29 °C84 °F and lows 16 °C61 °F. There is a clear seasonal cycle, with 8.4 °C15 °F between the average temperature of the warmest and the coolest month.
It is wet, with about 1,364 mm54 in of precipitation per year. The wettest three-month stretch is July–September, which brings 54% of the annual total. Months with less than 20 mm0.8 in on average: November–February. The wettest month is August (264 mm10 in), the driest is December (4 mm0.2 in).
Relative humidity ranges from 50% in March to 88% in September. The clearest skies (lowest average cloud amount, 32%) are typical of January. Average wind speed near the ground ranges from 6 km/h (4 mph) in September to 11 km/h (7 mph) in December. Daylight lasts from about 11.2 hours in December to 13.1 hours in June.
Best time to visit Khon Kaen
Based on these averages, the most comfortable months for sightseeing and outdoor activities are November and December: average highs of 29 °C84 °F to 29 °C84 °F with 4 mm0.2 in to 18 mm0.7 in of precipitation per month.
The most challenging month is August, which is very wet (264 mm10 in) and humid (87% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Khon Kaen
- Wetter months (May–September) — highs 2985 to 34 °C92 °F, lows 2374 to 25 °C77 °F, about 219 mm8.6 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and a good rain jacket or umbrella and quick-drying shoes.
- Drier months (October–April) — highs 2984 to 37 °C98 °F, lows 1661 to 25 °C77 °F, about 39 mm1.5 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Khon Kaen compares
Compared with Udon Thani, about 108 km to the north, Khon Kaen has practically the same average temperature and receives a similar amount of precipitation. The difference is largest in January (1.4 °C2.5 °F warmer).
Of the 22 places in Thailand covered by World Climates, Khon Kaen is the 18th warmest by annual mean temperature and the 10th wettest by annual precipitation. See all of them on the Thailand climate page.
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Vientiane (Laos, Aw), Savannakhet (Laos, Aw) and Rondonópolis (Brazil, Aw).
Nearby places
- Udon Thani 108 km · 26 °C79 °F · 1,323 mm52 in
- Vientiane 171 km · 26 °C79 °F · 1,215 mm48 in
- Nakhon Ratchasima 182 km · 27 °C80 °F · 1,220 mm48 in
- Savannakhet 206 km · 26 °C79 °F · 1,227 mm48 in
- Ubon Ratchathani 254 km · 27 °C81 °F · 1,523 mm60 in
- Kabin Buri 302 km · 27 °C81 °F · 1,533 mm60 in
- Si Maha Phot 310 km · 27 °C81 °F · 1,546 mm61 in
- Khlong Luang 354 km · 28 °C82 °F · 1,361 mm54 in
Frequently asked questions
What is the warmest month in Khon Kaen?
April is the warmest month in Khon Kaen, with an average high of 37 °C (98 °F) and an average low of 25 °C (77 °F).
What is the coldest month in Khon Kaen?
December is the coldest month, with an average high of 29 °C (84 °F) and an average low of 16 °C (61 °F).
When does it rain the most in Khon Kaen?
August is the wettest month with about 264 mm (10.4 in) of precipitation; December is the driest with about 4 mm (0.2 in).
What is the best time to visit Khon Kaen?
Judging by long-term averages, the most comfortable months are November and December.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.