| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 31° | 23.1° | 155.1mm | 17 | 54 |
| February | 31.4° | 23.9° | 79.7mm | 7 | 68 |
| March | 31.8° | 24° | 23.1mm | 4 | 73 |
| April | 32.5° | 24° | — | — | 72 |
| May | 32.9° | 24° | 55.3mm | 7 | 62 |
| June | 32.4° | 23.4° | 23.2mm | 2.7 | 73 |
| July | 31.9° | 22.6° | 202.5mm | 10 | 60 |
| August | 33.1° | 21.6° | 0mm | 0 | 76 |
| September | 33.7° | 22.3° | 60.9mm | 5 | 63 |
| October | 33.5° | 23.5° | 15.7mm | 1.5 | 71 |
| November | 32.4° | 23.6° | 78.5mm | 12 | 54 |
| December | 31.2° | 23.9° | — | — | 77 |
January in Banjarmasin averages a daily high of 31°C with nights around 23.1°C. Expect roughly 17 wet days totalling 155.1mm. Demanding conditions — pack for it and plan indoor options.
February in Banjarmasin averages a daily high of 31.4°C with nights around 23.9°C. Expect roughly 7 wet days totalling 79.7mm. Generally workable, with some weather to plan around.
March in Banjarmasin averages a daily high of 31.8°C with nights around 24°C. Expect roughly 4 wet days totalling 23.1mm. Generally workable, with some weather to plan around.
April in Banjarmasin averages a daily high of 32.5°C with nights around 24°C. Generally workable, with some weather to plan around.
May in Banjarmasin averages a daily high of 32.9°C with nights around 24°C. Expect roughly 7 wet days totalling 55.3mm. Generally workable, with some weather to plan around.
June in Banjarmasin averages a daily high of 32.4°C with nights around 23.4°C. Rain is rare — about 2.7 wet days and 23.2mm across the month. Generally workable, with some weather to plan around.
July in Banjarmasin averages a daily high of 31.9°C with nights around 22.6°C. Expect roughly 10 wet days totalling 202.5mm. Generally workable, with some weather to plan around.
August in Banjarmasin averages a daily high of 33.1°C with nights around 21.6°C. Rain is rare — about 0 wet days and 0mm across the month. Comfortable conditions for being outdoors all day.
September in Banjarmasin averages a daily high of 33.7°C with nights around 22.3°C. Expect roughly 5 wet days totalling 60.9mm. Generally workable, with some weather to plan around.
October in Banjarmasin averages a daily high of 33.5°C with nights around 23.5°C. Rain is rare — about 1.5 wet days and 15.7mm across the month. Generally workable, with some weather to plan around.
November in Banjarmasin averages a daily high of 32.4°C with nights around 23.6°C. Expect roughly 12 wet days totalling 78.5mm. Demanding conditions — pack for it and plan indoor options.
December in Banjarmasin averages a daily high of 31.2°C with nights around 23.9°C. 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. Banjarmasin peaks at 77.
Based on 30 years of records, March–April scores highest for comfort in Banjarmasin, balancing daytime temperature against rainfall.
September is the warmest, averaging a daily high of 33.7°C.
July is the wettest, averaging 202.5mm of rain across roughly 10 wet days.
January is the coolest month, with average daily highs around 31°C.