Honiara, Solomon Islands Climate & Monthly Averages
The climate of Honiara
Honiara has a tropical rainforest climate, marked by steady heat, high humidity and frequent downpours in every month. Average daytime highs range from about 83°F (28°C) in August to around 85°F (29°C) in January, and the city records roughly 265 days of measurable precipitation a year.
Climate quick facts
- Hottest month: January - highs near 85°F (29°C)
- Coldest month: August - highs near 83°F (28°C)
- Record high: 92°F (33°C) · Record low: 69°F (20°C) (2015–2024)
- Wettest month: December (26 rainy days) · Sunniest: October (10.5 h sun/day)
- Climate type: tropical rainforest - steady heat, high humidity and frequent downpours in every month
Temperatures through the year
The warmest stretch of the year centers on January. Highs average 85°F (29°C) and overnight lows stay near 76°F (24°C). The coolest month is August, with typical highs of 83°F (28°C) and lows around 74°F (23°C). Based on 2015–2024 weather data, temperatures have reached as high as 92°F (33°C) and dropped as low as 69°F (20°C).
Rain, sun and snow
December is usually the wettest month. It brings about 16.6 inches (421 mm) of rain over 26 days, while June is the driest. October brings the most sunshine, averaging 10.5 hours of sun a day.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 85° | 76° | 27 | 14.0 in | 9.2 h/day | 87% |
| February | 84° | 76° | 26 | 15.0 in | 8.4 h/day | 88% |
| March | 84° | 75° | 26 | 13.5 in | 8.8 h/day | 88% |
| April | 84° | 75° | 24 | 11.6 in | 9.0 h/day | 88% |
| May | 84° | 75° | 21 | 6.3 in | 9.3 h/day | 87% |
| June | 83° | 75° | 18 | 5.0 in | 9.5 h/day | 86% |
| July | 83° | 74° | 17 | 5.7 in | 9.4 h/day | 85% |
| August | 83° | 74° | 18 | 5.0 in | 9.4 h/day | 85% |
| September | 84° | 74° | 18 | 5.7 in | 10.3 h/day | 85% |
| October | 85° | 75° | 21 | 5.2 in | 10.5 h/day | 84% |
| November | 84° | 75° | 24 | 10.2 in | 10.0 h/day | 87% |
| December | 84° | 75° | 26 | 16.6 in | 9.2 h/day | 88% |
Honiara month by month
Honiara weather in January
January brings highs around 85°F (29°C), lows near 76°F (24°C), about 27 wet days - typically the hottest month of the year in Honiara.
Honiara weather in February
February brings highs around 84°F (29°C), lows near 76°F (24°C), about 26 wet days.
Honiara weather in March
March brings highs around 84°F (29°C), lows near 75°F (24°C), about 26 wet days.
Honiara weather in April
April brings highs around 84°F (29°C), lows near 75°F (24°C), about 24 wet days.
Honiara weather in May
May brings highs around 84°F (29°C), lows near 75°F (24°C), about 21 wet days.
Honiara weather in June
June brings highs around 83°F (29°C), lows near 75°F (24°C), about 18 wet days - typically the driest month of the year in Honiara.
Honiara weather in July
July brings highs around 83°F (29°C), lows near 74°F (24°C), about 17 wet days.
Honiara weather in August
August brings highs around 83°F (28°C), lows near 74°F (23°C), about 18 wet days - typically the coldest month of the year in Honiara.
Honiara weather in September
September brings highs around 84°F (29°C), lows near 74°F (24°C), about 18 wet days.
Honiara weather in October
October brings highs around 85°F (29°C), lows near 75°F (24°C), about 21 wet days - typically the sunniest month of the year in Honiara.
Honiara weather in November
November brings highs around 84°F (29°C), lows near 75°F (24°C), about 24 wet days.
Honiara weather in December
December brings highs around 84°F (29°C), lows near 75°F (24°C), about 26 wet days - typically the wettest month of the year in Honiara.
Seasons in Honiara
September through November
September through November in Honiara brings hot afternoons, with daytime highs averaging 84°F (29°C) and nights around 75°F (24°C); expect showers on roughly 63 days across the season. With the humidity factored in, afternoons often feel hotter than the thermometer reads - run the numbers through the humidity and dew point converter to see why.
December through February
December through February in Honiara brings hot afternoons, with daytime highs averaging 84°F (29°C) and nights around 76°F (24°C); expect showers on roughly 78 days across the season.
March through May
March through May in Honiara brings hot afternoons, with daytime highs averaging 84°F (29°C) and nights around 75°F (24°C); expect showers on roughly 71 days across the season.
June through August
June through August in Honiara brings hot afternoons, with daytime highs averaging 83°F (29°C) and nights around 74°F (24°C); expect showers on roughly 52 days across the season.
Climate questions, answered
What is the average temperature in Honiara?
Is Honiara hot in summer?
Is Honiara cold in winter?
How many rainy days does Honiara get in a year?
Best time to visit Honiara
The best time to visit Honiara is generally March to August, when these months combine the driest skies with the most comfortable heat. Daytime temperatures in that window typically sit near 84°F (29°C).
Pack for Honiara with a compact umbrella or rain shell - showers are a regular feature; moisture-wicking fabrics to cope with the humidity. Evenings can feel noticeably cooler than afternoons - January nights average 76°F (24°C).
Honiara temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.