Banjarbaru climate

Name: Banjarbaru
Address: ID

Banjarbaru is warmest in September, with average highs of 32 °C, and coldest in July, when nights average 23 °C. December is the wettest month (388 mm) and August the driest (62 mm). Figures are 1991–2020 climate normals.

Across a full year Banjarbaru averages 2,622 mm of rain and 365 days above 25 °C.

Indonesia · population 293,332 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month September 32 °C
Coldest month July 23 °C
Driest month August 62 mm
Wettest month December 388 mm
Least cloud August 62 % cloud
Hottest on record October 37 °C
Coldest on record July 19 °C

What to expectBanjarbaru through the year

Banjarbaru changes little through the year. Average daily highs stay between 30 and 32 °C, so no month stands out as a season in the way it would further from the equator.

Counted across a normal year, 365 days a year reach 25 °C, 201 of them reach 30 °C. The warmest reading in the 1991–2020 record is 37 °C, in October.

Rain is strongly seasonal. December averages 388 mm against 62 mm in August — 6.3 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	29.3 °C	336 mm	94 %
February	29.6 °C	280 mm	93 %
March	29.9 °C	302 mm	91 %
April	30.0 °C	284 mm	88 %
May	30.3 °C	181 mm	75 %
June	29.9 °C	138 mm	69 %
July	29.9 °C	100 mm	65 %
August	31.1 °C	62 mm	62 %
September	32.1 °C	76 mm	67 %
October	32.0 °C	171 mm	80 %
November	30.3 °C	306 mm	92 %
December	29.1 °C	388 mm	96 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	29.3 °C	23.3 °C	25.7 °C	33.1 °C	21.6 °C	31	10
February	29.6 °C	23.4 °C	25.9 °C	33.4 °C	21.9 °C	28	11
March	29.9 °C	23.5 °C	26.0 °C	33.3 °C	21.9 °C	31	15
April	30.0 °C	23.7 °C	26.2 °C	33.1 °C	21.9 °C	30	17
May	30.3 °C	23.7 °C	26.4 °C	33.0 °C	20.3 °C	31	21
June	29.9 °C	23.2 °C	26.1 °C	33.5 °C	20.2 °C	30	14
July	29.9 °C	22.7 °C	25.8 °C	33.9 °C	19.0 °C	31	14
August	31.1 °C	22.8 °C	26.5 °C	35.4 °C	19.0 °C	31	23
September	32.1 °C	23.0 °C	27.0 °C	36.2 °C	19.7 °C	30	26
October	32.0 °C	23.4 °C	27.1 °C	37.1 °C	20.2 °C	31	25
November	30.3 °C	23.6 °C	26.2 °C	36.6 °C	21.6 °C	30	17
December	29.1 °C	23.4 °C	25.6 °C	33.0 °C	21.6 °C	31	8

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	336 mm	29	12 h/day	94 %	89 %	11 km/h
February	280 mm	25	12 h/day	93 %	88 %	10 km/h
March	302 mm	27	12 h/day	91 %	88 %	9.7 km/h
April	284 mm	27	12 h/day	88 %	89 %	8.7 km/h
May	181 mm	22	12 h/day	75 %	87 %	8.8 km/h
June	138 mm	18	12 h/day	69 %	85 %	9.7 km/h
July	100 mm	14	12 h/day	65 %	82 %	11 km/h
August	62 mm	9	12 h/day	62 %	76 %	13 km/h
September	76 mm	9	12 h/day	67 %	75 %	13 km/h
October	171 mm	17	12 h/day	80 %	79 %	11 km/h
November	306 mm	27	12 h/day	92 %	87 %	9.5 km/h
December	388 mm	30	12 h/day	96 %	90 %	11 km/h

How Banjarbaru compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Banjarbaru	32 °C	23 °C	2,622 mm	365
Banjarmasin · Indonesia	32 °C	23 °C	2,374 mm	365
Palangkaraya · Indonesia	32 °C	23 °C	2,670 mm	365
Sampit · Indonesia	31 °C	23 °C	2,695 mm	365
Balikpapan · Indonesia	29 °C	24 °C	2,499 mm	365
Loa Janan · Indonesia	31 °C	23 °C	2,917 mm	365
Samarinda · Indonesia	31 °C	23 °C	2,992 mm	365

Planning a trip? See the best time to visit Banjarbaru.

QuestionsCommon questions about Banjarbaru’s climate

When is the best time to visit Banjarbaru?

That depends on what you want, so the honest answer is a comparison rather than a single month. January, July, December sit closest to 20 °C on average, September is the warmest month and August the driest. The month-by-month table above has the full picture.

How hot does Banjarbaru get?

In September, the warmest month, daily highs average 32 °C. About 201 days a year pass 30 °C. The highest value in the 1991–2020 record is 37 °C.

How cold does it get in winter?

Nights average 23 °C in July, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Banjarbaru?

December, averaging 388 mm over 30 days with rain. The driest month is August with 62 mm. The year as a whole averages 2,622 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Banjarbaru rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: -3.441°, 114.837° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.