| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 21.9° | 18° | 53.5mm | 10.1 | 80 |
| February | 22.7° | 18° | 33.9mm | 8.7 | 83 |
| March | 25.2° | 21.6° | 38.2mm | 9.3 | 81 |
| April | 29.2° | 23.1° | 75.7mm | 7.4 | 76 |
| May | 32.3° | 26° | 108.4mm | 8 | 63 |
| June | 34.4° | 27.2° | 43.4mm | 4.6 | 61 |
| July | 34.2° | 29° | 82.6mm | 7.6 | 56 |
| August | 33.3° | — | 135.3mm | 9.8 | 55 |
| September | 30.8° | 24.2° | 490.3mm | 14.8 | 55 |
| October | 28.7° | — | 560.5mm | 17.5 | 63 |
| November | 26.1° | 22.3° | 253.5mm | 14.6 | 71 |
| December | 22.6° | — | 132mm | 13.1 | 74 |
January in Ba Đồn averages a daily high of 21.9°C with nights around 18°C. Expect roughly 10.1 wet days totalling 53.5mm. Comfortable conditions for being outdoors all day.
February in Ba Đồn averages a daily high of 22.7°C with nights around 18°C. Expect roughly 8.7 wet days totalling 33.9mm. Comfortable conditions for being outdoors all day.
March in Ba Đồn averages a daily high of 25.2°C with nights around 21.6°C. Expect roughly 9.3 wet days totalling 38.2mm. Comfortable conditions for being outdoors all day.
April in Ba Đồn averages a daily high of 29.2°C with nights around 23.1°C. Expect roughly 7.4 wet days totalling 75.7mm. Comfortable conditions for being outdoors all day.
May in Ba Đồn averages a daily high of 32.3°C with nights around 26°C. Expect roughly 8 wet days totalling 108.4mm. Generally workable, with some weather to plan around.
June in Ba Đồn averages a daily high of 34.4°C with nights around 27.2°C. Expect roughly 4.6 wet days totalling 43.4mm. Generally workable, with some weather to plan around.
July in Ba Đồn averages a daily high of 34.2°C with nights around 29°C. Expect roughly 7.6 wet days totalling 82.6mm. Generally workable, with some weather to plan around.
August in Ba Đồn averages a daily high of 33.3°C. Expect roughly 9.8 wet days totalling 135.3mm. Generally workable, with some weather to plan around.
September in Ba Đồn averages a daily high of 30.8°C with nights around 24.2°C. Expect roughly 14.8 wet days totalling 490.3mm. Generally workable, with some weather to plan around.
October in Ba Đồn averages a daily high of 28.7°C. Expect roughly 17.5 wet days totalling 560.5mm. Generally workable, with some weather to plan around.
November in Ba Đồn averages a daily high of 26.1°C with nights around 22.3°C. Expect roughly 14.6 wet days totalling 253.5mm. Generally workable, with some weather to plan around.
December in Ba Đồn averages a daily high of 22.6°C. Expect roughly 13.1 wet days totalling 132mm. 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. Ba Đồn peaks at 83.
Based on 30 years of records, January–April scores highest for comfort in Ba Đồn, balancing daytime temperature against rainfall.
June is the warmest, averaging a daily high of 34.4°C.
October is the wettest, averaging 560.5mm of rain across roughly 17.5 wet days.
January is the coolest month, with average daily highs around 21.9°C.