| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 32.2° | 21° | 4.2mm | 0.8 | 78 |
| February | 34° | 23° | 5.8mm | 0.7 | 71 |
| March | 36.2° | 24.7° | 8.3mm | 2.1 | 59 |
| April | 37.5° | 26° | 62.9mm | 4.3 | 49 |
| May | 36.2° | 26.1° | 107.7mm | 9.9 | 43 |
| June | 35.1° | 25.8° | 109.9mm | 13.8 | 40 |
| July | 34.3° | 25.3° | 119.6mm | 15.9 | 41 |
| August | 34.5° | 25.1° | 128.4mm | 16.7 | 40 |
| September | 33.7° | 24.8° | 256.5mm | 20.6 | 43 |
| October | 32.9° | 24.6° | 156.2mm | 12.9 | 51 |
| November | 32.3° | 23.3° | 51.9mm | 5 | 69 |
| December | 31.4° | 21.1° | 6.1mm | 1.1 | 80 |
January in Suphan Buri averages a daily high of 32.2°C with nights around 21°C. Rain is rare — about 0.8 wet days and 4.2mm across the month. Comfortable conditions for being outdoors all day.
February in Suphan Buri averages a daily high of 34°C with nights around 23°C. Rain is rare — about 0.7 wet days and 5.8mm across the month. Generally workable, with some weather to plan around.
March in Suphan Buri averages a daily high of 36.2°C with nights around 24.7°C. Rain is rare — about 2.1 wet days and 8.3mm across the month. Generally workable, with some weather to plan around.
April in Suphan Buri averages a daily high of 37.5°C with nights around 26°C. Expect roughly 4.3 wet days totalling 62.9mm. Demanding conditions — pack for it and plan indoor options.
May in Suphan Buri averages a daily high of 36.2°C with nights around 26.1°C. Expect roughly 9.9 wet days totalling 107.7mm. Demanding conditions — pack for it and plan indoor options.
June in Suphan Buri averages a daily high of 35.1°C with nights around 25.8°C. Expect roughly 13.8 wet days totalling 109.9mm. Demanding conditions — pack for it and plan indoor options.
July in Suphan Buri averages a daily high of 34.3°C with nights around 25.3°C. Expect roughly 15.9 wet days totalling 119.6mm. Demanding conditions — pack for it and plan indoor options.
August in Suphan Buri averages a daily high of 34.5°C with nights around 25.1°C. Expect roughly 16.7 wet days totalling 128.4mm. Demanding conditions — pack for it and plan indoor options.
September in Suphan Buri averages a daily high of 33.7°C with nights around 24.8°C. Expect roughly 20.6 wet days totalling 256.5mm. Demanding conditions — pack for it and plan indoor options.
October in Suphan Buri averages a daily high of 32.9°C with nights around 24.6°C. Expect roughly 12.9 wet days totalling 156.2mm. Demanding conditions — pack for it and plan indoor options.
November in Suphan Buri averages a daily high of 32.3°C with nights around 23.3°C. Expect roughly 5 wet days totalling 51.9mm. Generally workable, with some weather to plan around.
December in Suphan Buri averages a daily high of 31.4°C with nights around 21.1°C. Rain is rare — about 1.1 wet days and 6.1mm across the month. Comfortable conditions for being outdoors all day.
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. Suphan Buri peaks at 80.
Based on 30 years of records, December–January scores highest for comfort in Suphan Buri, balancing daytime temperature against rainfall.
April is the warmest, averaging a daily high of 37.5°C.
September is the wettest, averaging 256.5mm of rain across roughly 20.6 wet days.
December is the coolest month, with average daily highs around 31.4°C.