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Surat Thani, Thailand climate
Aw Tropical savanna (dry winter)
Surat Thani has a remarkably steady tropical climate (Tropical savanna (dry winter), Köppen Aw). The hottest month is April with an average daily high near 35°C, while the coldest is December averaging around 22°C at night. Precipitation totals about 1793 mm a year and is strongly seasonal — November alone averages 308 mm while February barely receives 7 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)Surat Thani climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 33 | 34 | 35 | 34 | 34 | 33 | 33 | 33 | 32 | 31 | 30 |
| Avg temp (°C) | 26 | 27 | 28 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 27 | 26 |
| Avg low (°C) | 22 | 22 | 22 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 22 |
| Precipitation (mm) | 40 | 7 | 47 | 71 | 171 | 159 | 180 | 156 | 195 | 244 | 308 | 215 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 33 | 34 | 35 | 34 | 34 |
| Avg temp (°C) | 26 | 27 | 28 | 29 | 29 | 29 |
| Avg low (°C) | 22 | 22 | 22 | 24 | 24 | 24 |
| Precipitation (mm) | 40 | 7 | 47 | 71 | 171 | 159 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 33 | 33 | 33 | 32 | 31 | 30 |
| Avg temp (°C) | 28 | 28 | 28 | 28 | 27 | 26 |
| Avg low (°C) | 23 | 23 | 23 | 23 | 23 | 22 |
| Precipitation (mm) | 180 | 156 | 195 | 244 | 308 | 215 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 7 | 3 | 5 | 7 | 15 | 16 | 17 | 16 | 18 | 19 | 17 | 14 |
| Days with high ≥ 32°C (days) | 10 | 20 | 26 | 26 | 26 | 24 | 23 | 22 | 20 | 16 | 7 | 4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 7 | 3 | 5 | 7 | 15 | 16 |
| Days with high ≥ 32°C (days) | 10 | 20 | 26 | 26 | 26 | 24 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 17 | 16 | 18 | 19 | 17 | 14 |
| Days with high ≥ 32°C (days) | 23 | 22 | 20 | 16 | 7 | 4 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 59 | 48 | 48 | 62 | 81 | 84 | 85 | 85 | 87 | 84 | 80 | 74 |
| Relative humidity (%) | 85 | 82 | 79 | 78 | 83 | 87 | 88 | 88 | 88 | 87 | 88 | 87 |
| Wind speed (mph) | 3.9 | 3.5 | 3.2 | 2.8 | 3.0 | 3.4 | 3.6 | 3.7 | 3.4 | 3.0 | 3.8 | 4.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 59 | 48 | 48 | 62 | 81 | 84 |
| Relative humidity (%) | 85 | 82 | 79 | 78 | 83 | 87 |
| Wind speed (mph) | 3.9 | 3.5 | 3.2 | 2.8 | 3.0 | 3.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 85 | 85 | 87 | 84 | 80 | 74 |
| Relative humidity (%) | 88 | 88 | 88 | 87 | 88 | 87 |
| Wind speed (mph) | 3.6 | 3.7 | 3.4 | 3.0 | 3.8 | 4.2 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 26 years of daily observations at Surat Thani, a weather station, about 20 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.