| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 31.1° | 22.5° | 70.7mm | 6 | 72 |
| February | 31.6° | 23.3° | 46.5mm | 4.7 | 72 |
| March | 32.6° | 23.9° | 34.4mm | 4.2 | 69 |
| April | 32.8° | 24.2° | 69.4mm | 5 | 67 |
| May | 32.8° | 24.1° | 54mm | 4.7 | 67 |
| June | 32.6° | 24.4° | 99.3mm | 6.3 | 65 |
| July | 32.5° | 23.4° | 62.6mm | 5.4 | 67 |
| August | 32.6° | 23.2° | 113mm | 8.2 | 61 |
| September | 31.8° | 23.3° | 133.9mm | 9.3 | 62 |
| October | 31.4° | 23.4° | 134.2mm | 9.7 | 63 |
| November | 31.2° | 23.4° | 113.9mm | 10.2 | 63 |
| December | 30.7° | 23.1° | 74.2mm | 8.8 | 68 |
January in Binjai averages a daily high of 31.1°C with nights around 22.5°C. Expect roughly 6 wet days totalling 70.7mm. Generally workable, with some weather to plan around.
February in Binjai averages a daily high of 31.6°C with nights around 23.3°C. Expect roughly 4.7 wet days totalling 46.5mm. Generally workable, with some weather to plan around.
March in Binjai averages a daily high of 32.6°C with nights around 23.9°C. Expect roughly 4.2 wet days totalling 34.4mm. Generally workable, with some weather to plan around.
April in Binjai averages a daily high of 32.8°C with nights around 24.2°C. Expect roughly 5 wet days totalling 69.4mm. Generally workable, with some weather to plan around.
May in Binjai averages a daily high of 32.8°C with nights around 24.1°C. Expect roughly 4.7 wet days totalling 54mm. Generally workable, with some weather to plan around.
June in Binjai averages a daily high of 32.6°C with nights around 24.4°C. Expect roughly 6.3 wet days totalling 99.3mm. Generally workable, with some weather to plan around.
July in Binjai averages a daily high of 32.5°C with nights around 23.4°C. Expect roughly 5.4 wet days totalling 62.6mm. Generally workable, with some weather to plan around.
August in Binjai averages a daily high of 32.6°C with nights around 23.2°C. Expect roughly 8.2 wet days totalling 113mm. Generally workable, with some weather to plan around.
September in Binjai averages a daily high of 31.8°C with nights around 23.3°C. Expect roughly 9.3 wet days totalling 133.9mm. Generally workable, with some weather to plan around.
October in Binjai averages a daily high of 31.4°C with nights around 23.4°C. Expect roughly 9.7 wet days totalling 134.2mm. Generally workable, with some weather to plan around.
November in Binjai averages a daily high of 31.2°C with nights around 23.4°C. Expect roughly 10.2 wet days totalling 113.9mm. Generally workable, with some weather to plan around.
December in Binjai averages a daily high of 30.7°C with nights around 23.1°C. Expect roughly 8.8 wet days totalling 74.2mm. 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. Binjai peaks at 72.
Based on 30 years of records, December–July scores highest for comfort in Binjai, balancing daytime temperature against rainfall.
April is the warmest, averaging a daily high of 32.8°C.
October is the wettest, averaging 134.2mm of rain across roughly 9.7 wet days.
December is the coolest month, with average daily highs around 30.7°C.