Tanjungbalai climate

Name: Tanjungbalai
Address: ID

Tanjungbalai is warmest in June, with average highs of 30 °C, and coldest in January, when nights average 24 °C. November is the wettest month (385 mm) and February the driest (179 mm). Figures are 1991–2020 climate normals.

Across a full year Tanjungbalai averages 3,111 mm of rain and 365 days above 25 °C.

Indonesia · population 190,935 · 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 June 30 °C
Coldest month January 24 °C
Driest month February 179 mm
Wettest month November 385 mm
Least cloud February 80 % cloud
Hottest on record August 34 °C
Coldest on record February 21 °C
Warmest sea May 30 °C

What to expectTanjungbalai through the year

Tanjungbalai changes little through the year. Average daily highs stay between 29 and 30 °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, 104 of them reach 30 °C. The warmest reading in the 1991–2020 record is 34 °C, in August.

Rain is strongly seasonal. November averages 385 mm against 179 mm in February — 2.2 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Tanjungbalai is warmest in May at 30 °C and coldest in January at 29 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	28.7 °C	233 mm	84 %
February	29.2 °C	179 mm	80 %
March	29.7 °C	209 mm	82 %
April	29.8 °C	246 mm	87 %
May	30.1 °C	248 mm	88 %
June	30.1 °C	185 mm	82 %
July	29.9 °C	197 mm	83 %
August	29.8 °C	233 mm	86 %
September	29.5 °C	294 mm	89 %
October	29.1 °C	354 mm	92 %
November	28.6 °C	385 mm	94 %
December	28.4 °C	347 mm	91 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	28.7 °C	23.6 °C	25.7 °C	32.7 °C	21.4 °C	31	1
February	29.2 °C	23.8 °C	26.2 °C	31.3 °C	20.9 °C	28	4
March	29.7 °C	24.2 °C	26.6 °C	32.1 °C	21.9 °C	31	11
April	29.8 °C	24.6 °C	26.8 °C	32.7 °C	22.6 °C	30	14
May	30.1 °C	24.8 °C	27.0 °C	32.7 °C	23.0 °C	31	16
June	30.1 °C	24.7 °C	27.0 °C	33.4 °C	22.1 °C	30	17
July	29.9 °C	24.4 °C	26.8 °C	33.2 °C	22.3 °C	31	14
August	29.8 °C	24.2 °C	26.6 °C	34.0 °C	21.9 °C	31	12
September	29.5 °C	24.0 °C	26.3 °C	32.7 °C	21.8 °C	30	8
October	29.1 °C	23.9 °C	26.0 °C	33.4 °C	21.6 °C	31	5
November	28.6 °C	23.8 °C	25.7 °C	31.8 °C	21.3 °C	30	1
December	28.4 °C	23.7 °C	25.6 °C	31.7 °C	22.0 °C	31	1

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	233 mm	26	12 h/day	84 %	89 %	9.6 km/h	28.7 °C
February	179 mm	22	12 h/day	80 %	88 %	9.8 km/h	29.1 °C
March	209 mm	26	12 h/day	82 %	88 %	10 km/h	29.5 °C
April	246 mm	28	12 h/day	87 %	90 %	9.4 km/h	29.8 °C
May	248 mm	27	12 h/day	88 %	89 %	9.1 km/h	30.1 °C
June	185 mm	23	12 h/day	82 %	88 %	9.4 km/h	30.0 °C
July	197 mm	23	12 h/day	83 %	88 %	9.6 km/h	29.9 °C
August	233 mm	26	12 h/day	86 %	89 %	9.5 km/h	29.8 °C
September	294 mm	28	12 h/day	89 %	90 %	9.1 km/h	29.7 °C
October	354 mm	30	12 h/day	92 %	90 %	9.3 km/h	29.5 °C
November	385 mm	29	12 h/day	94 %	92 %	9.7 km/h	29.3 °C
December	347 mm	28	12 h/day	91 %	91 %	10 km/h	28.9 °C

How Tanjungbalai 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
Tanjungbalai	30 °C	24 °C	3,111 mm	365
Pematangsiantar · Indonesia	28 °C	20 °C	3,293 mm	352
Perbaungan · Indonesia	30 °C	23 °C	2,632 mm	364
Percut · Indonesia	30 °C	23 °C	3,221 mm	364
Medan · Indonesia	30 °C	22 °C	3,278 mm	364
Sunggal · Indonesia	30 °C	22 °C	3,176 mm	364
Binjai · Indonesia	31 °C	21 °C	3,209 mm	363

Where Tanjungbalai ranks

Ranking	Position	Value
Warmest sea temperatures in Asia year-round	13thof 50	30 °C
Warmest sea temperatures in the world year-round	13thof 50	30 °C
Warmest sea temperatures in Asia in February	14thof 50	29 °C
Warmest sea temperatures in Asia in March	15thof 50	30 °C
Warmest sea temperatures in the world in March	19thof 50	30 °C
Warmest sea temperatures in the world in February	22ndof 50	29 °C

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

QuestionsCommon questions about Tanjungbalai’s climate

When is the best time to visit Tanjungbalai?

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, June is the warmest month and February the driest. The month-by-month table above has the full picture.

How hot does Tanjungbalai get?

In June, the warmest month, daily highs average 30 °C. About 104 days a year pass 30 °C. The highest value in the 1991–2020 record is 34 °C.

How cold does it get in winter?

Nights average 24 °C in January, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Tanjungbalai?

November, averaging 385 mm over 29 days with rain. The driest month is February with 179 mm. The year as a whole averages 3,111 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 Tanjungbalai 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
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.