Monthly Climate
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Best time to visit Honolulu

February is the best time to visit Honolulu for general sightseeing, with average highs of 24 °C and about 6 wet days. The comfortable season runs roughly November 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 February comfort 84/100
A beach holiday August sea 27 °C
The least cloud January 40 % average cloud cover
The least rain June 21 mm
Warmth September 28 °C
Cooler weather February 24 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 February 84 24 °C 6 88
2 January 83 25 °C 7 88
3 March 81 25 °C 8 85
4 December 80 25 °C 6 91
5 April 78 25 °C 8 87
6 May 77 26 °C 7 91
7 November 75 26 °C 6 93
8 June 72 27 °C 7 92
9 October 72 28 °C 6 93
10 September 69 28 °C 7 92
11 August 69 28 °C 6 93
12 July 69 28 °C 7 91

For a beach holiday

August scores highest, with a sea temperature of 27 °C and air temperatures around 28 °C. The sea never reaches 20 °C here.

Month Sea Air Sunshine Beach score
January 24 °C 25 °C 40 % 88
February 24 °C 24 °C 45 % 88
March 24 °C 25 °C 49 % 85
April 24 °C 25 °C 49 % 87
May 25 °C 26 °C 46 % 91
June 26 °C 27 °C 43 % 92
July 26 °C 28 °C 45 % 91
August 27 °C 28 °C 43 % 93
September 27 °C 28 °C 41 % 92
October 27 °C 28 °C 48 % 93
November 26 °C 26 °C 48 % 93
December 25 °C 25 °C 44 % 91

When to think twice

July scores lowest with about 7 wet days and highs near 28 °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 24.7 °C 40 mm 40 %
February 24.4 °C 37 mm 45 %
March 24.6 °C 53 mm 49 %
April 25.3 °C 27 mm 49 %
May 26.3 °C 28 mm 46 %
June 27.1 °C 21 mm 43 %
July 27.6 °C 22 mm 45 %
August 28.0 °C 23 mm 43 %
September 28.1 °C 22 mm 41 %
October 27.6 °C 33 mm 48 %
November 26.4 °C 45 mm 48 %
December 25.3 °C 48 mm 44 %

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.