Climate averages 1991–2020
Nakhon Ratchasima weather
by month.
See how the year changes. April has the highest average daily maximum; December has the lowest average monthly rainfall.
Pleasant-weather months by our simple rule: December
Long-term climate patterns, not a forecast for a particular trip.
Across the year Nakhon Ratchasima averages a daytime high of 31.6°C and a nighttime low of 22.8°C, with about 1,071 mm of rain on roughly 153 days. April is the warmest month (average high 35.0°C) and December the coolest (28.9°C). September is the wettest month with 231 mm; December is the driest with 5.3 mm.
Months with pleasant weather by a simple rule (average high between 18°C and 29°C, average low of at least 5°C and at most 8 rain days): December. This looks at temperature and rain only, not humidity, wind, sea temperature or crowds.
The annual picture
A year in Nakhon Ratchasima
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Nakhon Ratchasima climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.9°C18.9°C | 18.9°C | 6.7 | 1.7 | 11.311 h |
| February | 32.3°C20.8°C | 20.8°C | 8.7 | 1.7 | 11.612 h |
| March | 34.3°C23.5°C | 23.5°C | 38 | 6.7 | 12.012 h |
| April | 35.0°C25.0°C | 25.0°C | 69 | 12.6 | 12.512 h |
| May | 33.5°C25.2°C | 25.2°C | 140 | 20.0 | 12.813 h |
| June | 32.8°C25.2°C | 25.2°C | 118 | 19.4 | 13.013 h |
| July | 32.0°C24.8°C | 24.8°C | 125 | 21.0 | 12.913 h |
| August | 31.3°C24.5°C | 24.5°C | 161 | 22.7 | 12.613 h |
| September | 30.3°C23.7°C | 23.7°C | 231 | 24.5 | 12.212 h |
| October | 29.6°C22.5°C | 22.5°C | 138 | 16.4 | 11.812 h |
| November | 29.4°C20.9°C | 20.9°C | 29 | 4.8 | 11.411 h |
| December | 28.9°C19.1°C | 19.1°C | 5.3 | 1.3 | 11.311 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
Nearby cities
- Kabin BuriThailand · 121 kmHigh 31.2°C · Low 23.0°C · 1,499 mm rain a year
- Si Maha PhotThailand · 128 kmHigh 31.3°C · Low 23.1°C · 1,677 mm rain a year
- Paoy PaetCambodia · 154 kmHigh 31.6°C · Low 23.6°C · 1,214 mm rain a year
- Khon KaenThailand · 182 kmHigh 31.3°C · Low 22.7°C · 1,149 mm rain a year
- Nong ChokThailand · 182 kmHigh 32.0°C · Low 23.9°C · 1,260 mm rain a year
- Khlong LuangThailand · 186 kmHigh 32.3°C · Low 24.2°C · 1,426 mm rain a year
- Khlong Sam WaThailand · 191 kmHigh 31.9°C · Low 24.2°C · 1,260 mm rain a year
- Sai MaiThailand · 196 kmHigh 32.0°C · Low 24.3°C · 1,426 mm rain a year
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC+7, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at 15.00°, 102.10° (3 km from the city centre). Rain comes from the 0.25° cell at 15.00°, 102.00°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.