Ambon climate

Name: Ambon
Address: ID

Ambon is warmest in December, with average highs of 29 °C, and coldest in August, when nights average 25 °C. June is the wettest month (261 mm) and October the driest (87 mm). Figures are 1991–2020 climate normals.

Across a full year Ambon averages 1,934 mm of rain and 364 days above 25 °C.

Indonesia · population 347,288 · 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 December 29 °C
Coldest month August 25 °C
Driest month October 87 mm
Wettest month June 261 mm
Least cloud August 68 % cloud
Hottest on record January 33 °C
Coldest on record September 22 °C
Warmest sea April 29 °C

What to expectAmbon through the year

Ambon changes little through the year. Average daily highs stay between 26 and 29 °C, so no month stands out as a season in the way it would further from the equator.

Counted across a normal year, 364 days a year reach 25 °C, 13 of them reach 30 °C. The warmest reading in the 1991–2020 record is 33 °C, in January.

Rain is strongly seasonal. June averages 261 mm against 87 mm in October — 3.0 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Ambon is warmest in April at 29 °C and coldest in August at 27 °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	28.6 °C	165 mm	86 %
February	28.6 °C	123 mm	86 %
March	28.5 °C	167 mm	83 %
April	28.2 °C	215 mm	81 %
May	27.7 °C	256 mm	72 %
June	26.8 °C	261 mm	73 %
July	26.2 °C	196 mm	70 %
August	26.2 °C	116 mm	68 %
September	26.9 °C	87 mm	70 %
October	27.8 °C	87 mm	69 %
November	28.6 °C	96 mm	75 %
December	28.7 °C	166 mm	86 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	28.6 °C	26.1 °C	27.3 °C	33.4 °C	23.8 °C	31	3
February	28.6 °C	26.2 °C	27.4 °C	33.1 °C	24.1 °C	28	3
March	28.5 °C	26.0 °C	27.2 °C	32.1 °C	23.2 °C	31	3
April	28.2 °C	25.6 °C	27.0 °C	31.0 °C	23.7 °C	30	1
May	27.7 °C	25.5 °C	26.6 °C	31.2 °C	23.8 °C	31	0
June	26.8 °C	25.0 °C	25.9 °C	28.9 °C	23.1 °C	30	0
July	26.2 °C	24.6 °C	25.4 °C	28.6 °C	22.2 °C	30	0
August	26.2 °C	24.5 °C	25.3 °C	28.7 °C	22.5 °C	30	0
September	26.9 °C	24.9 °C	25.8 °C	28.9 °C	21.5 °C	30	0
October	27.8 °C	25.3 °C	26.6 °C	31.9 °C	23.2 °C	31	0
November	28.6 °C	25.7 °C	27.2 °C	31.0 °C	23.3 °C	30	1
December	28.7 °C	26.1 °C	27.4 °C	32.5 °C	24.1 °C	31	3

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	165 mm	23	12 h/day	86 %	82 %	22 km/h	29.2 °C
February	123 mm	20	12 h/day	86 %	81 %	23 km/h	29.1 °C
March	167 mm	23	12 h/day	83 %	82 %	19 km/h	29.2 °C
April	215 mm	25	12 h/day	81 %	84 %	16 km/h	29.4 °C
May	256 mm	25	12 h/day	72 %	85 %	19 km/h	28.6 °C
June	261 mm	24	12 h/day	73 %	86 %	23 km/h	27.6 °C
July	196 mm	23	12 h/day	70 %	85 %	25 km/h	26.8 °C
August	116 mm	17	12 h/day	68 %	83 %	25 km/h	26.6 °C
September	87 mm	15	12 h/day	70 %	83 %	21 km/h	27.1 °C
October	87 mm	16	12 h/day	69 %	83 %	17 km/h	28.1 °C
November	96 mm	18	12 h/day	75 %	82 %	14 km/h	29.0 °C
December	166 mm	24	12 h/day	86 %	82 %	19 km/h	29.4 °C

How Ambon 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
Ambon	29 °C	25 °C	1,934 mm	364
Sorong · Indonesia	30 °C	24 °C	3,577 mm	365
Kendari · Indonesia	31 °C	23 °C	2,800 mm	365
Baubau · Indonesia	31 °C	24 °C	2,138 mm	365

Where Ambon ranks

Ranking	Position	Value
Warmest sea temperatures in Asia in February	13th of 50	29 °C
Warmest sea temperatures in Asia in January	14th of 50	29 °C
Warmest sea temperatures in Asia in December	19th of 50	29 °C
Warmest sea temperatures in the world in February	21st of 50	29 °C
Warmest sea temperatures in the world in January	21st of 50	29 °C
Warmest sea temperatures in the world in December	22nd of 50	29 °C

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

QuestionsCommon questions about Ambon’s climate

When is the best time to visit Ambon?

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

How hot does Ambon get?

In December, the warmest month, daily highs average 29 °C. About 13 days a year pass 30 °C. The highest value in the 1991–2020 record is 33 °C.

How cold does it get in winter?

Nights average 25 °C in August, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Ambon?

June, averaging 261 mm over 24 days with rain. The driest month is October with 87 mm. The year as a whole averages 1,934 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 Ambon 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: -3.696°, 128.183° (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.