Banjarmasin climate
Banjarmasin (Indonesia) has a tropical rainforest climate (Köppen Af). The average temperature over the year is 28 °C82 °F, and about 2,785 mm110 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Banjarmasin climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2883 | 2679 | 2781 | 35014 |
| Feb | 2983 | 2679 | 2781 | 33913 |
| Mar | 2984 | 2679 | 2882 | 34814 |
| Apr | 2985 | 2780 | 2882 | 27211 |
| May | 3085 | 2680 | 2883 | 2007.9 |
| Jun | 2984 | 2678 | 2781 | 1676.6 |
| Jul | 2984 | 2577 | 2781 | 1174.6 |
| Aug | 2985 | 2577 | 2781 | 773.0 |
| Sep | 3087 | 2578 | 2882 | 783.1 |
| Oct | 3187 | 2679 | 2883 | 1425.6 |
| Nov | 3086 | 2780 | 2883 | 28611 |
| Dec | 2984 | 2679 | 2781 | 41216 |
| Year | 3187 | 2577 | 2882 | 2,785110 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 84% | 91% | 4.6 | 12:18 |
| Feb | 83% | 90% | 4.7 | 12:13 |
| Mar | 82% | 85% | 4.9 | 12:08 |
| Apr | 81% | 79% | 5.0 | 12:02 |
| May | 81% | 66% | 5.0 | 11:58 |
| Jun | 82% | 62% | 4.7 | 11:56 |
| Jul | 81% | 57% | 4.9 | 11:57 |
| Aug | 78% | 48% | 5.4 | 12:00 |
| Sep | 75% | 53% | 5.5 | 12:06 |
| Oct | 75% | 69% | 5.2 | 12:11 |
| Nov | 78% | 83% | 4.9 | 12:16 |
| Dec | 83% | 91% | 4.5 | 12:19 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Banjarmasin is like
The warmest month is October, with an average high of 31 °C87 °F and a low of 26 °C79 °F. The coldest is July, when highs average 29 °C84 °F and lows 25 °C77 °F. Temperatures barely change through the year: the warmest and the coolest month differ by only 1.5 °C2.7 °F.
It is very wet, receiving about 2,785 mm110 in of precipitation per year. The wettest three-month stretch is December–February, which brings 39% of the annual total. The wettest month is December (412 mm16 in), the driest is August (77 mm3.0 in).
Relative humidity ranges from 75% in October to 84% in January. The clearest skies (lowest average cloud amount, 48%) are typical of August. Average wind speed near the ground ranges from 7 km/h (5 mph) in April to 14 km/h (9 mph) in September.
Best time to visit Banjarmasin
Based on these averages, the most comfortable months for sightseeing and outdoor activities are August and September: average highs of 29 °C85 °F to 30 °C87 °F with 77 mm3.0 in to 78 mm3.1 in of precipitation per month.
The most challenging month is December, which is very wet (412 mm16 in) and humid (83% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Banjarmasin
- Wetter months (November–April) — highs 2883 to 30 °C86 °F, lows 2679 to 27 °C80 °F, about 334 mm13 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
- Drier months (May–October) — highs 2984 to 31 °C87 °F, lows 2577 to 26 °C80 °F, about 130 mm5.1 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
How Banjarmasin compares
Compared with Balikpapan, about 338 km to the northeast, Banjarmasin is on average 0.6 °C1.1 °F warmer and receives 13% more precipitation (2,785 mm110 in vs 2,469 mm97 in). The difference is largest in October (1.3 °C2.4 °F warmer).
Of the 110 places in Indonesia covered by World Climates, Banjarmasin is the 23rd warmest by annual mean temperature and the 19th wettest by annual precipitation. See all of them on the Indonesia climate page.
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Budta (Philippines, Af), Iligan (Philippines, Af) and Muricay (Philippines, Af).
Nearby places
- Banjarbaru 30 km · 27 °C80 °F · 2,632 mm104 in
- Palangkaraya 145 km · 26 °C79 °F · 2,850 mm112 in
- Sampit 202 km · 27 °C81 °F · 2,662 mm105 in
- Pangkalanbuun 337 km · 27 °C80 °F · 2,628 mm103 in
- Balikpapan 338 km · 27 °C81 °F · 2,469 mm97 in
- Nusantara 351 km · 26 °C79 °F · 2,429 mm96 in
- Samarinda 424 km · 26 °C78 °F · 2,449 mm96 in
- Surabaya 482 km · 28 °C83 °F · 1,881 mm74 in
Frequently asked questions
What is the warmest month in Banjarmasin?
October is the warmest month in Banjarmasin, with an average high of 31 °C (87 °F) and an average low of 26 °C (79 °F).
What is the coldest month in Banjarmasin?
July is the coldest month, with an average high of 29 °C (84 °F) and an average low of 25 °C (77 °F).
When does it rain the most in Banjarmasin?
December is the wettest month with about 412 mm (16.2 in) of precipitation; August is the driest with about 77 mm (3.0 in).
What is the best time to visit Banjarmasin?
Judging by long-term averages, the most comfortable months are August and September.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.