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Chai Nat, Thailand climate
Aw Tropical savanna (dry winter)
Chai Nat has a remarkably steady tropical climate (Tropical savanna (dry winter), Köppen Aw). The hottest month is April with an average daily high near 37°C, while the coldest is December averaging around 21°C at night. Precipitation totals about 1109 mm a year and is strongly seasonal — September alone averages 290 mm while January barely receives 11 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Chai Nat climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 33 | 34 | 36 | 37 | 36 | 35 | 34 | 33 | 33 | 33 | 33 | 32 |
| Avg temp (°C) | 27 | 29 | 31 | 31 | 31 | 30 | 30 | 29 | 29 | 29 | 28 | 27 |
| Avg low (°C) | 22 | 23 | 25 | 26 | 26 | 26 | 25 | 25 | 25 | 24 | 23 | 21 |
| Precipitation (mm) | 11 | 16 | 45 | 59 | 127 | 117 | 121 | 149 | 290 | 119 | 33 | 23 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 33 | 34 | 36 | 37 | 36 | 35 |
| Avg temp (°C) | 27 | 29 | 31 | 31 | 31 | 30 |
| Avg low (°C) | 22 | 23 | 25 | 26 | 26 | 26 |
| Precipitation (mm) | 11 | 16 | 45 | 59 | 127 | 117 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 34 | 33 | 33 | 33 | 33 | 32 |
| Avg temp (°C) | 30 | 29 | 29 | 29 | 28 | 27 |
| Avg low (°C) | 25 | 25 | 25 | 24 | 23 | 21 |
| Precipitation (mm) | 121 | 149 | 290 | 119 | 33 | 23 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 1 | 1 | 3 | 5 | 12 | 13 | 14 | 16 | 18 | 13 | 3 | 1 |
| Days with high ≥ 32°C (days) | 21 | 23 | 26 | 26 | 28 | 27 | 25 | 25 | 22 | 22 | 19 | 17 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 1 | 1 | 3 | 5 | 12 | 13 |
| Days with high ≥ 32°C (days) | 21 | 23 | 26 | 26 | 28 | 27 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 14 | 16 | 18 | 13 | 3 | 1 |
| Days with high ≥ 32°C (days) | 25 | 25 | 22 | 22 | 19 | 17 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 36 | 37 | 48 | 59 | 80 | 88 | 90 | 92 | 88 | 72 | 49 | 38 |
| Relative humidity (%) | 56 | 51 | 53 | 59 | 72 | 78 | 79 | 82 | 86 | 84 | 77 | 65 |
| Wind speed (mph) | 4.7 | 5.0 | 5.5 | 5.0 | 4.6 | 5.2 | 5.4 | 5.0 | 3.5 | 3.6 | 4.6 | 5.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 36 | 37 | 48 | 59 | 80 | 88 |
| Relative humidity (%) | 56 | 51 | 53 | 59 | 72 | 78 |
| Wind speed (mph) | 4.7 | 5.0 | 5.5 | 5.0 | 4.6 | 5.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 90 | 92 | 88 | 72 | 49 | 38 |
| Relative humidity (%) | 79 | 82 | 86 | 84 | 77 | 65 |
| Wind speed (mph) | 5.4 | 5.0 | 3.5 | 3.6 | 4.6 | 5.3 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 28 years of daily observations at Lop Buri, a weather station, about 68 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.