Nakhon Ratchasima climate
Nakhon Ratchasima (Thailand) has a tropical savanna (dry winter) climate (Köppen Aw). The average temperature over the year is 27 °C80 °F, and about 1,220 mm48 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Nakhon Ratchasima climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 3087 | 1763 | 2475 | 100.4 |
| Feb | 3492 | 2068 | 2780 | 100.4 |
| Mar | 3595 | 2373 | 2984 | 491.9 |
| Apr | 3696 | 2476 | 3086 | 773.0 |
| May | 3392 | 2476 | 2984 | 1536.0 |
| Jun | 3289 | 2475 | 2882 | 1375.4 |
| Jul | 3187 | 2374 | 2781 | 1556.1 |
| Aug | 3087 | 2374 | 2780 | 1907.5 |
| Sep | 2985 | 2373 | 2679 | 27111 |
| Oct | 2985 | 2271 | 2678 | 1435.6 |
| Nov | 2984 | 2067 | 2476 | 210.8 |
| Dec | 2984 | 1763 | 2373 | 40.2 |
| Year | 3696 | 1763 | 2780 | 1,22048 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 63% | 39% | 5.0 | 11:20 |
| Feb | 57% | 38% | 5.3 | 11:38 |
| Mar | 58% | 53% | 5.4 | 12:01 |
| Apr | 62% | 65% | 5.7 | 12:27 |
| May | 74% | 82% | 5.6 | 12:49 |
| Jun | 78% | 87% | 5.4 | 13:00 |
| Jul | 80% | 90% | 5.1 | 12:56 |
| Aug | 82% | 92% | 4.9 | 12:37 |
| Sep | 87% | 90% | 4.7 | 12:12 |
| Oct | 85% | 72% | 4.7 | 11:46 |
| Nov | 80% | 54% | 4.8 | 11:25 |
| Dec | 71% | 43% | 4.8 | 11:15 |
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 Nakhon Ratchasima is like
The warmest month is April, with an average high of 36 °C96 °F and a low of 24 °C76 °F. The coldest is December, when highs average 29 °C84 °F and lows 17 °C63 °F. Seasonal differences are small — just 7.2 °C13 °F between the warmest and the coolest month.
It is wet, with about 1,220 mm48 in of precipitation per year. The wettest three-month stretch is July–September, which brings 50% of the annual total. Months with less than 20 mm0.8 in on average: December–February. The wettest month is September (271 mm11 in), the driest is December (4 mm0.2 in).
Relative humidity ranges from 57% in February to 87% in September. The clearest skies (lowest average cloud amount, 38%) are typical of February. Average wind speed near the ground ranges from 6 km/h (4 mph) in September to 9 km/h (6 mph) in July. Daylight lasts from about 11.2 hours in December to 13.0 hours in June.
Best time to visit Nakhon Ratchasima
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 21 mm0.8 in of precipitation per month.
The most challenging month is September, which is very wet (271 mm11 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 Nakhon Ratchasima
- Wetter months (May–October) — highs 2985 to 33 °C92 °F, lows 2271 to 24 °C76 °F, about 175 mm6.9 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an umbrella or light rain jacket.
- Drier months (November–April) — highs 2984 to 36 °C96 °F, lows 1763 to 24 °C76 °F, about 29 mm1.1 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Nakhon Ratchasima compares
Compared with Kabin Buri, about 121 km to the south, Nakhon Ratchasima is on average 0.6 °C1 °F cooler and receives 20% less precipitation (1,220 mm48 in vs 1,533 mm60 in). The difference is largest in January (1.2 °C2.1 °F cooler).
Of the 22 places in Thailand covered by World Climates, Nakhon Ratchasima is the 19th warmest by annual mean temperature and the 19th 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): Rondonópolis (Brazil, Aw), Cuiabá (Brazil, Aw) and Vientiane (Laos, Aw).
Nearby places
- Kabin Buri 121 km · 27 °C81 °F · 1,533 mm60 in
- Si Maha Phot 128 km · 27 °C81 °F · 1,546 mm61 in
- Khon Kaen 182 km · 27 °C80 °F · 1,364 mm54 in
- Khlong Luang 186 km · 28 °C82 °F · 1,361 mm54 in
- Chon Buri 216 km · 27 °C81 °F · 1,508 mm59 in
- Bangkok 219 km · 28 °C82 °F · 1,361 mm54 in
- Samut Prakan 223 km · 28 °C82 °F · 1,302 mm51 in
- Si Racha 236 km · 28 °C83 °F · 1,347 mm53 in
Frequently asked questions
What is the warmest month in Nakhon Ratchasima?
April is the warmest month in Nakhon Ratchasima, with an average high of 36 °C (96 °F) and an average low of 24 °C (76 °F).
What is the coldest month in Nakhon Ratchasima?
December is the coldest month, with an average high of 29 °C (84 °F) and an average low of 17 °C (63 °F).
When does it rain the most in Nakhon Ratchasima?
September is the wettest month with about 271 mm (10.7 in) of precipitation; December is the driest with about 4 mm (0.2 in).
What is the best time to visit Nakhon Ratchasima?
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.