Nakhon Si Thammarat climate
Nakhon Si Thammarat (Thailand) has a tropical monsoon climate (Köppen Am). The average temperature over the year is 27 °C81 °F, and about 2,360 mm93 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Nakhon Si Thammarat climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2882 | 2475 | 2679 | 1977.7 |
| Feb | 2984 | 2475 | 2679 | 411.6 |
| Mar | 3086 | 2577 | 2781 | 1214.8 |
| Apr | 3187 | 2679 | 2883 | 1014.0 |
| May | 3187 | 2679 | 2883 | 1646.5 |
| Jun | 3086 | 2678 | 2882 | 1556.1 |
| Jul | 3086 | 2577 | 2781 | 1526.0 |
| Aug | 3086 | 2577 | 2781 | 1475.8 |
| Sep | 3085 | 2577 | 2781 | 1877.4 |
| Oct | 2985 | 2577 | 2781 | 26210 |
| Nov | 2984 | 2578 | 2781 | 47419 |
| Dec | 2883 | 2576 | 2679 | 35914 |
| Year | 3187 | 2475 | 2781 | 2,36093 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 85% | 64% | 4.5 | 11:41 |
| Feb | 83% | 53% | 5.5 | 11:51 |
| Mar | 82% | 56% | 5.8 | 12:03 |
| Apr | 81% | 72% | 5.7 | 12:18 |
| May | 82% | 88% | 5.0 | 12:30 |
| Jun | 84% | 88% | 4.8 | 12:37 |
| Jul | 84% | 90% | 4.7 | 12:34 |
| Aug | 84% | 89% | 4.8 | 12:24 |
| Sep | 84% | 91% | 4.7 | 12:09 |
| Oct | 85% | 89% | 4.3 | 11:55 |
| Nov | 86% | 85% | 3.9 | 11:44 |
| Dec | 86% | 78% | 3.9 | 11:38 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Nakhon Si Thammarat is like
The warmest month is May, with an average high of 31 °C87 °F and a low of 26 °C79 °F. The coldest is January, when highs average 28 °C82 °F and lows 24 °C75 °F. Temperatures barely change through the year: the warmest and the coolest month differ by only 2.4 °C4.4 °F.
It is very wet, receiving about 2,360 mm93 in of precipitation per year. The wettest three-month stretch is October–December, which brings 46% of the annual total. The wettest month is November (474 mm19 in), the driest is February (41 mm1.6 in).
Relative humidity ranges from 81% in April to 86% in November. The clearest skies (lowest average cloud amount, 53%) are typical of February. Average wind speed near the ground ranges from 7 km/h (4 mph) in April to 10 km/h (6 mph) in December.
Best time to visit Nakhon Si Thammarat
Based on these averages, the most comfortable months for sightseeing and outdoor activities are February: average highs of 29 °C84 °F to 29 °C84 °F with 41 mm1.6 in to 41 mm1.6 in of precipitation per month.
The most challenging month is November, which is very wet (474 mm19 in) and humid (86% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Nakhon Si Thammarat
- Wetter months (October–January) — highs 2882 to 29 °C85 °F, lows 2475 to 25 °C78 °F, about 323 mm13 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
- Drier months (February–September) — highs 2984 to 31 °C87 °F, lows 2475 to 26 °C79 °F, about 133 mm5.3 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
How Nakhon Si Thammarat compares
Compared with Surat Thani, about 105 km to the northwest, Nakhon Si Thammarat is on average 0.4 °C0.7 °F warmer and receives a similar amount of precipitation. The difference is largest in August (0.8 °C1.4 °F warmer).
Of the 22 places in Thailand covered by World Climates, Nakhon Si Thammarat is the 13th warmest by annual mean temperature and the wettest by annual precipitation. See all of them on the Thailand climate page.
Places in other countries with the most similar temperature and rainfall pattern: Pasir Mas (Malaysia, Am), Kota Bharu (Malaysia, Af) and Pasir Puteh (Malaysia, Af).
Nearby places
- Surat Thani 105 km · 27 °C80 °F · 2,329 mm92 in
- Hat Yai 168 km · 27 °C81 °F · 2,020 mm80 in
- Langkawi (Kuah) 235 km · 28 °C82 °F · 2,198 mm87 in
- Alor Setar 261 km · 27 °C81 °F · 2,303 mm91 in
- Kota Kuala Muda 319 km · 27 °C81 °F · 2,353 mm93 in
- Paya Terubong 342 km · 27 °C81 °F · 2,353 mm93 in
- Pasir Mas 357 km · 27 °C80 °F · 2,422 mm95 in
- Kota Bharu 359 km · 27 °C81 °F · 2,538 mm100 in
Frequently asked questions
What is the warmest month in Nakhon Si Thammarat?
May is the warmest month in Nakhon Si Thammarat, with an average high of 31 °C (87 °F) and an average low of 26 °C (79 °F).
What is the coldest month in Nakhon Si Thammarat?
January is the coldest month, with an average high of 28 °C (82 °F) and an average low of 24 °C (75 °F).
When does it rain the most in Nakhon Si Thammarat?
November is the wettest month with about 474 mm (18.7 in) of precipitation; February is the driest with about 41 mm (1.6 in).
What is the best time to visit Nakhon Si Thammarat?
Judging by long-term averages, the most comfortable months are February.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 113 m, while Nakhon Si Thammarat lies at about 8 m. Temperatures on this page were therefore adjusted by +0.7 °C1.2 °F using the standard lapse rate of 6.5 °C per 1,000 m.