Monthly Climate
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Best time to visit Ambon

September is the best time to visit Ambon for general sightseeing, with average highs of 27 °C and about 15 wet days. The comfortable season runs roughly April to November.

It depends what you are going for

One month rarely wins on everything. These are the best months on each measure taken on its own.

If you want Best month On that measure
Sightseeing and walking September comfort 59/100
A beach holiday September sea 27 °C
The least cloud August 68 % average cloud cover
The least rain October 87 mm
Warmth December 29 °C
Cooler weather July 26 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 September 59 27 °C 15 74
2 August 57 26 °C 17 74
3 October 56 28 °C 16 72
4 November 52 29 °C 18 69
5 July 52 26 °C 23 73
6 June 50 27 °C 24 73
7 April 49 28 °C 25 68
8 May 49 28 °C 25 71
9 March 47 29 °C 23 69
10 December 47 29 °C 24 68
11 January 45 29 °C 23 68
12 February 45 29 °C 20 69

For a beach holiday

September scores highest, with a sea temperature of 27 °C and air temperatures around 27 °C. The sea never reaches 20 °C here.

Month Sea Air Sunshine Beach score
January 29 °C 29 °C 86 % 68
February 29 °C 29 °C 86 % 69
March 29 °C 29 °C 83 % 69
April 29 °C 28 °C 81 % 68
May 29 °C 28 °C 72 % 71
June 28 °C 27 °C 73 % 73
July 27 °C 26 °C 70 % 73
August 27 °C 26 °C 68 % 74
September 27 °C 27 °C 70 % 74
October 28 °C 28 °C 69 % 72
November 29 °C 29 °C 75 % 69
December 29 °C 29 °C 86 % 68

When to think twice

February scores lowest with about 20 wet days and highs near 29 °C. That does not make it a bad month — it depends entirely on what you are travelling for. The numbers are all here; the judgement is yours.

The full year

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 %

Data sources and method

Normal period
1991–2020
Dataset version
era5-1991-2020-scores1.1
Last processed

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: comfort score, beach score, season boundaries. 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.