Monthly Climate
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Best time to visit Willemstad

March is the best time to visit Willemstad for general sightseeing, with average highs of 27 °C and about 6 wet days. The comfortable season runs roughly January to May.

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 March comfort 64/100
A beach holiday March sea 26 °C
The least cloud January 37 % average cloud cover
The least rain March 22 mm
Warmth September 29 °C
Cooler weather January 27 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 March 64 27 °C 6 93
2 February 63 27 °C 8 89
3 April 60 28 °C 7 91
4 January 57 27 °C 13 79
5 May 56 28 °C 8 88
6 June 50 28 °C 12 79
7 July 49 28 °C 13 77
8 December 48 27 °C 18 73
9 August 48 29 °C 12 76
10 September 46 29 °C 14 70
11 November 44 28 °C 22 71
12 October 41 29 °C 20 70

For a beach holiday

March scores highest, with a sea temperature of 26 °C and air temperatures around 27 °C. The sea never reaches 20 °C here.

Month Sea Air Sunshine Beach score
January 27 °C 27 °C 37 % 79
February 26 °C 27 °C 39 % 89
March 26 °C 27 °C 49 % 93
April 27 °C 28 °C 70 % 91
May 27 °C 28 °C 72 % 88
June 28 °C 28 °C 64 % 79
July 28 °C 28 °C 56 % 77
August 28 °C 29 °C 53 % 76
September 29 °C 29 °C 64 % 70
October 29 °C 29 °C 66 % 70
November 29 °C 28 °C 62 % 71
December 28 °C 27 °C 48 % 73

When to think twice

October 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 26.9 °C 48 mm 37 %
February 27.0 °C 26 mm 39 %
March 27.3 °C 22 mm 49 %
April 27.8 °C 32 mm 70 %
May 28.3 °C 38 mm 72 %
June 28.4 °C 45 mm 64 %
July 28.3 °C 48 mm 56 %
August 28.9 °C 49 mm 53 %
September 29.2 °C 66 mm 64 %
October 28.7 °C 108 mm 66 %
November 27.9 °C 152 mm 62 %
December 27.3 °C 88 mm 48 %

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.