Honiara monthly weather averages
Average daytime temperature
The bar chart below shows the average monthly peak daytime temperatures at Honiara
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 30.3 | 30.2 | 29.3 | 30.2 | 30 | 30 | 29.1 | 29.9 | 30.1 | 30.2 | 30.2 | 30.3 |
| °F | 86.5 | 86.4 | 84.8 | 86.3 | 86 | 86 | 84.4 | 85.9 | 86.2 | 86.4 | 86.4 | 86.5 |
Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.
Average rainfall & rainy days
The graph below shows the average rainfall and number of rainy days per month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | 281 | 299 | 331 | 215 | 139 | 100 | 115 | 114 | 114 | 148 | 165 | 234 |
| inches | 11.1 | 11.8 | 13 | 8.5 | 5.5 | 3.9 | 4.5 | 4.5 | 4.5 | 5.8 | 6.5 | 9.2 |
| Rainy days | 19 | 20 | 22 | 17 | 15 | 13 | 15 | 13 | 14 | 15 | 15 | 18 |
Average annual rainfall in Honiara: 2405.3mm (947 inches)
Average daily sunshine
The bar chart below shows the average daily sunshine hours in Honiara
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hrs sunshine | 6.3 | 5.5 | 6.1 | 6 | 6.1 | 6 | 5.3 | 6.3 | 6.2 | 6.4 | 6.3 | 6.2 |
Day / night temperatures
The graph below shows the daily range of temperatures for each month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min °C | 22.3 | 22.2 | 22.3 | 22.3 | 22.2 | 22.2 | 21.3 | 21.3 | 22.1 | 22.2 | 22.2 | 22.3 |
| Max °C | 30.5 | 30.4 | 29.5 | 30.4 | 30.2 | 30.2 | 29.3 | 30.2 | 30.3 | 30.4 | 30.4 | 30.5 |
| Min °F | 72.1 | 72 | 72.1 | 72.1 | 72 | 72 | 70.3 | 70.3 | 71.8 | 72 | 72 | 72.1 |
| Max °F | 79.5 | 79.3 | 78.6 | 79.3 | 79.2 | 79.2 | 77.5 | 78.3 | 79.2 | 79.3 | 79.3 | 79.5 |
Sea temperature
The graph below shows the average sea temperature.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 30 | 29.9 | 29.7 | 29.7 | 29.4 | 29 | 28.6 | 28.3 | 28.5 | 28.9 | 29.4 | 29.9 |
| °F | 86 | 85.7 | 85.5 | 85.4 | 84.9 | 84.2 | 83.4 | 82.9 | 83.2 | 83.9 | 84.8 | 85.7 |
Wind speed
The graph below shows the average wind speed.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| km/h | 5 | 5 | 5 | 4 | 4 | 4 | 5 | 5 | 5 | 4 | 4 | 4 |
| mph | 3 | 3 | 3 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 2 | 2 |
A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.
Relative humidity
The graph below shows the average relative humidity.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 79% | 81% | 83% | 80% | 80% | 80% | 80% | 78% | 77% | 77% | 77% | 79% |
Other monthly averages
Honiara weather stats
| Hottest month: | January | 30.3°C 86.5°F |
|---|---|---|
| Driest month: | June | 100mm 3.9ins |
| Sunniest month: | August | 6.3hrs |
| Coldest month: | July | 29.1°C 84.4°F |
| Wettest month: | March | 331mm 13ins |
| Warmest sea: | January | 30°C 86°F |
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