Monthly Climate
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Best time to visit Honiara

August is the best time to visit Honiara for general sightseeing, with average highs of 28 °C and about 23 wet days.

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 August comfort 50/100
A beach holiday August sea 28 °C
The least cloud August 74 % average cloud cover
The least rain June 159 mm
Warmth December 29 °C
Cooler weather July 28 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 August 50 28 °C 23 71
2 July 50 28 °C 23 71
3 September 49 29 °C 23 71
4 June 49 29 °C 23 69
5 October 48 29 °C 26 69
6 May 48 29 °C 26 68
7 November 47 29 °C 25 67
8 March 47 29 °C 28 67
9 April 47 29 °C 27 66
10 February 47 29 °C 26 66
11 December 47 29 °C 27 66
12 January 47 29 °C 28 66

For a beach holiday

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

Month Sea Air Sunshine Beach score
January 30 °C 29 °C 86 % 66
February 30 °C 29 °C 88 % 66
March 30 °C 29 °C 85 % 67
April 30 °C 29 °C 81 % 66
May 29 °C 29 °C 80 % 68
June 29 °C 29 °C 76 % 69
July 29 °C 28 °C 77 % 71
August 28 °C 28 °C 74 % 71
September 29 °C 29 °C 75 % 71
October 29 °C 29 °C 77 % 69
November 29 °C 29 °C 80 % 67
December 30 °C 29 °C 82 % 66

When to think twice

January scores lowest with about 28 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 29.2 °C 355 mm 86 %
February 29.0 °C 342 mm 88 %
March 29.0 °C 355 mm 85 %
April 29.0 °C 292 mm 81 %
May 28.8 °C 210 mm 80 %
June 28.6 °C 159 mm 76 %
July 28.3 °C 180 mm 77 %
August 28.3 °C 171 mm 74 %
September 28.6 °C 186 mm 75 %
October 28.8 °C 253 mm 77 %
November 29.1 °C 260 mm 80 %
December 29.2 °C 328 mm 82 %

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.