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Nakhon Si Thammarat, Thailand climate
Am Tropical monsoon
Nakhon Si Thammarat has a remarkably steady tropical climate (Tropical monsoon, Köppen Am). The hottest month is May with an average daily high near 34°C, while the coldest is December averaging around 23°C at night. Precipitation totals about 2634 mm a year and is strongly seasonal — November alone averages 610 mm while February barely receives 48 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)Nakhon Si Thammarat climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 32 | 33 | 34 | 34 | 34 | 34 | 34 | 33 | 32 | 30 | 30 |
| Avg temp (°C) | 26 | 27 | 28 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 27 | 26 |
| Avg low (°C) | 22 | 22 | 23 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 23 |
| Precipitation (mm) | 261 | 48 | 97 | 73 | 181 | 124 | 138 | 140 | 162 | 284 | 610 | 517 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 32 | 33 | 34 | 34 | 34 |
| Avg temp (°C) | 26 | 27 | 28 | 29 | 29 | 29 |
| Avg low (°C) | 22 | 22 | 23 | 24 | 24 | 24 |
| Precipitation (mm) | 261 | 48 | 97 | 73 | 181 | 124 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 34 | 34 | 33 | 32 | 30 | 30 |
| Avg temp (°C) | 29 | 29 | 28 | 28 | 27 | 26 |
| Avg low (°C) | 24 | 23 | 23 | 23 | 23 | 23 |
| Precipitation (mm) | 138 | 140 | 162 | 284 | 610 | 517 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 13 | 6 | 7 | 7 | 15 | 13 | 14 | 15 | 17 | 20 | 21 | 18 |
| Days with high ≥ 32°C (days) | 3 | 10 | 24 | 26 | 28 | 26 | 26 | 26 | 24 | 16 | 6 | 2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 13 | 6 | 7 | 7 | 15 | 13 |
| Days with high ≥ 32°C (days) | 3 | 10 | 24 | 26 | 28 | 26 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 14 | 15 | 17 | 20 | 21 | 18 |
| Days with high ≥ 32°C (days) | 26 | 26 | 24 | 16 | 6 | 2 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 61 | 54 | 55 | 71 | 86 | 87 | 88 | 88 | 90 | 87 | 83 | 76 |
| Relative humidity (%) | 84 | 83 | 82 | 81 | 82 | 84 | 84 | 84 | 84 | 85 | 86 | 86 |
| Wind speed (m/s) | 2.7 | 2.5 | 2.2 | 1.8 | 1.8 | 2.1 | 2.3 | 2.3 | 2.1 | 2.0 | 2.5 | 2.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 61 | 54 | 55 | 71 | 86 | 87 |
| Relative humidity (%) | 84 | 83 | 82 | 81 | 82 | 84 |
| Wind speed (m/s) | 2.7 | 2.5 | 2.2 | 1.8 | 1.8 | 2.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 88 | 88 | 90 | 87 | 83 | 76 |
| Relative humidity (%) | 84 | 84 | 84 | 85 | 86 | 86 |
| Wind speed (m/s) | 2.3 | 2.3 | 2.1 | 2.0 | 2.5 | 2.8 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at Nakhon SI Thammarat, a weather station, about 11 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.