| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 32° | 18.2° | 1.2mm | 0.4 | 79 |
| February | 34° | 20° | 21.3mm | 2.6 | 67 |
| March | 35.8° | 22.5° | 14.2mm | 3.1 | 59 |
| April | 36.7° | 23.9° | 75.6mm | 6.6 | 48 |
| May | 35° | 24.3° | 235.3mm | 16.6 | 38 |
| June | 34° | 24.4° | 267.3mm | 17.9 | 42 |
| July | 32.7° | 24.1° | 333.3mm | 21.4 | 47 |
| August | 32.3° | 24° | 323.7mm | 22.2 | 49 |
| September | 32.1° | 23.7° | 359.3mm | 21.4 | 50 |
| October | 32.4° | 22.6° | 83.1mm | 8.6 | 61 |
| November | 32.3° | 20.4° | 35.2mm | 3.9 | 71 |
| December | 31.1° | 18.2° | 4.3mm | 1 | 82 |
January in Ubon Ratchathani averages a daily high of 32°C with nights around 18.2°C. Rain is rare — about 0.4 wet days and 1.2mm across the month. Comfortable conditions for being outdoors all day.
February in Ubon Ratchathani averages a daily high of 34°C with nights around 20°C. Rain is rare — about 2.6 wet days and 21.3mm across the month. Generally workable, with some weather to plan around.
March in Ubon Ratchathani averages a daily high of 35.8°C with nights around 22.5°C. Expect roughly 3.1 wet days totalling 14.2mm. Generally workable, with some weather to plan around.
April in Ubon Ratchathani averages a daily high of 36.7°C with nights around 23.9°C. Expect roughly 6.6 wet days totalling 75.6mm. Demanding conditions — pack for it and plan indoor options.
May in Ubon Ratchathani averages a daily high of 35°C with nights around 24.3°C. Expect roughly 16.6 wet days totalling 235.3mm. Demanding conditions — pack for it and plan indoor options.
June in Ubon Ratchathani averages a daily high of 34°C with nights around 24.4°C. Expect roughly 17.9 wet days totalling 267.3mm. Demanding conditions — pack for it and plan indoor options.
July in Ubon Ratchathani averages a daily high of 32.7°C with nights around 24.1°C. Expect roughly 21.4 wet days totalling 333.3mm. Demanding conditions — pack for it and plan indoor options.
August in Ubon Ratchathani averages a daily high of 32.3°C with nights around 24°C. Expect roughly 22.2 wet days totalling 323.7mm. Demanding conditions — pack for it and plan indoor options.
September in Ubon Ratchathani averages a daily high of 32.1°C with nights around 23.7°C. Expect roughly 21.4 wet days totalling 359.3mm. Demanding conditions — pack for it and plan indoor options.
October in Ubon Ratchathani averages a daily high of 32.4°C with nights around 22.6°C. Expect roughly 8.6 wet days totalling 83.1mm. Generally workable, with some weather to plan around.
November in Ubon Ratchathani averages a daily high of 32.3°C with nights around 20.4°C. Expect roughly 3.9 wet days totalling 35.2mm. Generally workable, with some weather to plan around.
December in Ubon Ratchathani averages a daily high of 31.1°C with nights around 18.2°C. Rain is rare — about 1 wet days and 4.3mm 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. Ubon Ratchathani peaks at 82.
Based on 30 years of records, December–January scores highest for comfort in Ubon Ratchathani, balancing daytime temperature against rainfall.
April is the warmest, averaging a daily high of 36.7°C.
September is the wettest, averaging 359.3mm of rain across roughly 21.4 wet days.
December is the coolest month, with average daily highs around 31.1°C.