Binjai climate

Name: Binjai
Address: ID

Binjai is warmest in July, with average highs of 31 °C, and coldest in February, when nights average 21 °C. November is the wettest month (370 mm) and February the driest (188 mm). Figures are 1991–2020 climate normals.

Across a full year Binjai averages 3,209 mm of rain and 363 days above 25 °C.

Indonesia · population 279,302 · 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 July 31 °C
Coldest month February 21 °C
Driest month February 188 mm
Wettest month November 370 mm
Least cloud February 80 % cloud
Hottest on record August 35 °C
Coldest on record February 18 °C

What to expectBinjai through the year

Binjai changes little through the year. Average daily highs stay between 29 and 31 °C, so no month stands out as a season in the way it would further from the equator.

Counted across a normal year, 363 days a year reach 25 °C, 126 of them reach 30 °C. The warmest reading in the 1991–2020 record is 35 °C, in August.

Rain is spread fairly evenly through the year, from 188 mm in February to 370 mm in November. There is no dry season to aim for.

Month by month

Month	Avg high	Rainfall	Cloud
January	28.3 °C	248 mm	84 %
February	29.0 °C	188 mm	80 %
March	29.7 °C	218 mm	82 %
April	29.8 °C	267 mm	87 %
May	30.3 °C	278 mm	89 %
June	30.5 °C	205 mm	84 %
July	30.6 °C	192 mm	84 %
August	30.4 °C	228 mm	87 %
September	29.7 °C	313 mm	90 %
October	29.0 °C	350 mm	93 %
November	28.3 °C	370 mm	94 %
December	27.9 °C	354 mm	92 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	28.3 °C	21.3 °C	24.5 °C	31.5 °C	19.1 °C	31	1
February	29.0 °C	21.3 °C	24.9 °C	31.5 °C	17.9 °C	28	3
March	29.7 °C	21.7 °C	25.4 °C	32.6 °C	18.8 °C	31	12
April	29.8 °C	22.1 °C	25.5 °C	32.7 °C	19.8 °C	30	12
May	30.3 °C	22.5 °C	25.9 °C	33.7 °C	19.8 °C	31	18
June	30.5 °C	22.2 °C	25.9 °C	33.8 °C	20.0 °C	30	20
July	30.6 °C	21.9 °C	25.8 °C	34.5 °C	18.9 °C	31	20
August	30.4 °C	21.9 °C	25.7 °C	34.7 °C	19.7 °C	31	18
September	29.7 °C	21.8 °C	25.2 °C	34.1 °C	19.8 °C	30	13
October	29.0 °C	21.8 °C	24.8 °C	33.1 °C	19.7 °C	31	6
November	28.3 °C	21.7 °C	24.5 °C	32.0 °C	19.5 °C	30	2
December	27.9 °C	21.6 °C	24.3 °C	31.4 °C	19.3 °C	30	1

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	248 mm	26	12 h/day	84 %	89 %	8.1 km/h
February	188 mm	23	12 h/day	80 %	87 %	8.4 km/h
March	218 mm	26	12 h/day	82 %	87 %	8.3 km/h
April	267 mm	28	12 h/day	87 %	89 %	8.1 km/h
May	278 mm	28	12 h/day	89 %	88 %	7.7 km/h
June	205 mm	24	12 h/day	84 %	86 %	7.9 km/h
July	192 mm	25	12 h/day	84 %	84 %	8.1 km/h
August	228 mm	27	12 h/day	87 %	85 %	7.9 km/h
September	313 mm	29	12 h/day	90 %	88 %	7.7 km/h
October	350 mm	30	12 h/day	93 %	90 %	7.6 km/h
November	370 mm	29	12 h/day	94 %	91 %	7.5 km/h
December	354 mm	29	12 h/day	92 %	91 %	8.0 km/h

How Binjai 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
Binjai	31 °C	21 °C	3,209 mm	363
Sunggal · Indonesia	30 °C	22 °C	3,176 mm	364
Medan · Indonesia	30 °C	22 °C	3,278 mm	364
Percut · Indonesia	30 °C	23 °C	3,221 mm	364
Perbaungan · Indonesia	30 °C	23 °C	2,632 mm	364
Pematangsiantar · Indonesia	28 °C	20 °C	3,293 mm	352
Langsa · Indonesia	30 °C	23 °C	2,115 mm	364

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

QuestionsCommon questions about Binjai’s climate

When is the best time to visit Binjai?

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

How hot does Binjai get?

In July, the warmest month, daily highs average 31 °C. About 126 days a year pass 30 °C. The highest value in the 1991–2020 record is 35 °C.

How cold does it get in winter?

Nights average 21 °C in February, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Binjai?

November, averaging 370 mm over 29 days with rain. The driest month is February with 188 mm. The year as a whole averages 3,209 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 Binjai 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: 3.600°, 98.485° (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.