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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 94°F, while the coldest is December averaging around 73°F at night. Precipitation totals about 104 inches a year and is strongly seasonal — November alone averages 24.0 inches while February barely receives 1.89 inches.
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 (°F) | 87 | 89 | 91 | 93 | 94 | 93 | 93 | 93 | 92 | 89 | 87 | 86 |
| Avg temp (°F) | 80 | 80 | 82 | 84 | 84 | 84 | 84 | 84 | 83 | 82 | 80 | 79 |
| Avg low (°F) | 72 | 72 | 73 | 74 | 75 | 75 | 75 | 74 | 74 | 74 | 73 | 73 |
| Precipitation (in) | 10.3 | 1.9 | 3.8 | 2.9 | 7.1 | 4.9 | 5.4 | 5.5 | 6.4 | 11.2 | 24.0 | 20.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 87 | 89 | 91 | 93 | 94 | 93 |
| Avg temp (°F) | 80 | 80 | 82 | 84 | 84 | 84 |
| Avg low (°F) | 72 | 72 | 73 | 74 | 75 | 75 |
| Precipitation (in) | 10.3 | 1.9 | 3.8 | 2.9 | 7.1 | 4.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 93 | 93 | 92 | 89 | 87 | 86 |
| Avg temp (°F) | 84 | 84 | 83 | 82 | 80 | 79 |
| Avg low (°F) | 75 | 74 | 74 | 74 | 73 | 73 |
| Precipitation (in) | 5.4 | 5.5 | 6.4 | 11.2 | 24.0 | 20.3 |
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 ≥ 90°F (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 ≥ 90°F (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 ≥ 90°F (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 (mph) | 6.0 | 5.5 | 4.8 | 4.0 | 4.0 | 4.7 | 5.1 | 5.2 | 4.7 | 4.5 | 5.5 | 6.2 |
| 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 (mph) | 6.0 | 5.5 | 4.8 | 4.0 | 4.0 | 4.7 |
| 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 (mph) | 5.1 | 5.2 | 4.7 | 4.5 | 5.5 | 6.2 |
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.