| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 30.5° | 22.3° | 319.9mm | 13.1 | 60 |
| February | 31.5° | 22.1° | 64.4mm | 5.7 | 71 |
| March | 32.9° | 22.8° | 81.1mm | 6.1 | 64 |
| April | 34.1° | 23.7° | 52.9mm | 4.6 | 62 |
| May | 34.4° | 24.1° | 156.5mm | 15.8 | 40 |
| June | 34.2° | 24° | 149.1mm | 11.9 | 47 |
| July | 33.8° | 23.7° | 187.5mm | 17.2 | 43 |
| August | 33.8° | 23.7° | 170.1mm | 17.5 | 43 |
| September | 33.2° | 23.5° | 175.1mm | 18.7 | 45 |
| October | 32° | 23.3° | 290.9mm | 22.1 | 50 |
| November | 30.4° | 23° | 752mm | 24.9 | 56 |
| December | 30° | 22.6° | 598.5mm | 22.6 | 58 |
January in Nakhon Si Thammarat averages a daily high of 30.5°C with nights around 22.3°C. Expect roughly 13.1 wet days totalling 319.9mm. Generally workable, with some weather to plan around.
February in Nakhon Si Thammarat averages a daily high of 31.5°C with nights around 22.1°C. Expect roughly 5.7 wet days totalling 64.4mm. Generally workable, with some weather to plan around.
March in Nakhon Si Thammarat averages a daily high of 32.9°C with nights around 22.8°C. Expect roughly 6.1 wet days totalling 81.1mm. Generally workable, with some weather to plan around.
April in Nakhon Si Thammarat averages a daily high of 34.1°C with nights around 23.7°C. Expect roughly 4.6 wet days totalling 52.9mm. Generally workable, with some weather to plan around.
May in Nakhon Si Thammarat averages a daily high of 34.4°C with nights around 24.1°C. Expect roughly 15.8 wet days totalling 156.5mm. Demanding conditions — pack for it and plan indoor options.
June in Nakhon Si Thammarat averages a daily high of 34.2°C with nights around 24°C. Expect roughly 11.9 wet days totalling 149.1mm. Demanding conditions — pack for it and plan indoor options.
July in Nakhon Si Thammarat averages a daily high of 33.8°C with nights around 23.7°C. Expect roughly 17.2 wet days totalling 187.5mm. Demanding conditions — pack for it and plan indoor options.
August in Nakhon Si Thammarat averages a daily high of 33.8°C with nights around 23.7°C. Expect roughly 17.5 wet days totalling 170.1mm. Demanding conditions — pack for it and plan indoor options.
September in Nakhon Si Thammarat averages a daily high of 33.2°C with nights around 23.5°C. Expect roughly 18.7 wet days totalling 175.1mm. Demanding conditions — pack for it and plan indoor options.
October in Nakhon Si Thammarat averages a daily high of 32°C with nights around 23.3°C. Expect roughly 22.1 wet days totalling 290.9mm. Demanding conditions — pack for it and plan indoor options.
November in Nakhon Si Thammarat averages a daily high of 30.4°C with nights around 23°C. Expect roughly 24.9 wet days totalling 752mm. Generally workable, with some weather to plan around.
December in Nakhon Si Thammarat averages a daily high of 30°C with nights around 22.6°C. Expect roughly 22.6 wet days totalling 598.5mm. Generally workable, with some weather to plan around.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Nakhon Si Thammarat peaks at 71.
Based on 30 years of records, February–March scores highest for comfort in Nakhon Si Thammarat, balancing daytime temperature against rainfall.
May is the warmest, averaging a daily high of 34.4°C.
November is the wettest, averaging 752mm of rain across roughly 24.9 wet days.
December is the coolest month, with average daily highs around 30°C.