Banjarmasin Temperature by Month

The average annual maximum temperature in Banjarmasin, South Kalimantan, Indonesia is 32°C (90°F), with little variation between seasons. This page covers monthly averages, day-night differences, and how Banjarmasin compares to cities worldwide.

With little seasonal fluctuation, Banjarmasin offers a predictable and steady climate. Maximum daytime temperatures reach a very warm 33°C (91°F) in September and a very warm 31°C (88°F) in January. At night, lows range from 24°C (75°F) to 24°C (75°F) throughout the year.

The chart below illustrates the average maximum day and minimum night temperatures in Banjarmasin by month:

Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM.

The chart below shows the average temperature throughout the year:

Banjarmasin's average annual maximum temperature is 32°C (90°F). To put that in context, here's how it compares to a few well-known destinations:

Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.

Reykjavík, Iceland averages 9°C (48°F) a year, mild summers by Icelandic standards, but cold winters and frequent wind.

Shanghai, China averages 21°C (70°F) a year, with warm summers, mild winters, and a noticeable spring and autumn.

Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Banjarmasin this rarely lasts long on the ground.

For more on Banjarmasin's weather, including monthly rainfall, sunshine hours, and humidity, visit our Banjarmasin climate page.