Solomon islands in september: average Weather, Temperature and Climate, Where to go?
Weather in Solomon islands in september 2025
Below, check out the weather forecast for the month of september for most popular cities in Solomon islands. These forecasts are probabilities for the month of september from weather reports for many years. The percentage indicates the possibility of having the weather mentioned.
Average weather in september in Honiara
tolerable weather UV index: 7
Weather at 6am
81°F
Partly Cloudy
34% of time
34%
20%
8%
Weather at 12pm
86°F
Moderate rain at times
45% of time
39%
10%
7%
Weather at 6pm
79°F
Moderate rain at times
54% of time
16%
15%
13%
Weather at 3am
77°F
33%
25%
18%
11%
Where to go in Solomon islands in september?
Where to go in Solomon islands in september: destination map
perfect weather
good
tolerable
bad
very bad
Where should you go in Solomon islands in september when it comes to the weather?
Remember:
The climate in Solomon islands in september ranges from tolerable to very bad depending on the region and city.
That month is not the best month to travel to in Solomon islands. The weather in San Christobal Island, Honiara, Santa Isabel Island, Malaita Island, Guadalcanal Island and New Georgia Islands is ok but correct. The sun is not there all the time and you might make you wet by rain regularly. However, if you don't plan a pool & relaxation holiday in Solomon islands but rather nature excursions or walking, this climate may suit. In addition, there are certainly fewer tourists at this time of year.
It's much worse in Choiseul Island and surrounding area where the climate is very bad. It is really not advisable to go to this area in september.
Climate in Solomon islands in september
Climate in Honiara in september
In the month of september, the mean temperature in Honiara is 85°F (maximum temperature is 86°F and minimum temperature is 81°F). The climate is quite pleasant around this city in september. With 13.9in over 19 days, you will suffer the rain throughout your vacations. So remember to bring clothes for rain.
With a correct weather, september is okay (but not the best month) for traveling there in Solomon islands.
| September | |||
| Average temperature | 85°F | ||
| Highest temperature | 86°F | ||
| Lowest temperature | 81°F | ||
| Sea temperature | 85°F | ||
| Rainfall | 13.9in | ||
| Number of days with rainfall | 19 day(s) (62%) | ||
| Humidity | 85% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 44% | ||
| Length of day | 12:03 | ||
| Our opinion at whereandwhen.net | tolerable |
Climate in Choiseul Island in september
In the month of september, maximum temperature is 85°F and minimum temperature is 83°F (for an average temperature of 85°F). The climate is good in that locality in september. With 23.7in over 22 days, rain is to be feared during your vacations. So remember to pack Rain coats.
| September | |||
| Average temperature | 85°F | ||
| Highest temperature | 85°F | ||
| Lowest temperature | 83°F | ||
| Rainfall | 23.7in | ||
| Number of days with rainfall | 22 day(s) (74%) | ||
| Humidity | 79% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 43% | ||
| Length of day | 12:04 | ||
| Our opinion at whereandwhen.net | very bad |
Climate in Guadalcanal Island in september
In september, the mean temperature in Guadalcanal Island is 85°F (maximum temperature is 86°F and minimum temperature is 81°F). The climate is quite nice around this city in september. With 13.9in over 19 days, you will suffer the rain during your holidays. Consider to bring adapted clothes.
With proper weather, september is okay (but not good time) for traveling in Guadalcanal Island in Solomon islands.
| September | |||
| Average temperature | 85°F | ||
| Highest temperature | 86°F | ||
| Lowest temperature | 81°F | ||
| Sea temperature | 85°F | ||
| Rainfall | 13.9in | ||
| Number of days with rainfall | 19 day(s) (62%) | ||
| Humidity | 85% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 44% | ||
| Length of day | 12:03 | ||
| Our opinion at whereandwhen.net | tolerable |
Climate in Malaita Island in september
In the month of september, maximum temperature is 85°F and minimum temperature is 81°F (for an average temperature of 83°F). The climate is pleasant in this city in the month of september. With 11.9in over 15 days, the weather is rather to rain for your holidays. Consider to bring clothes for rain.
With proper weather, september is okay (but not good month) for traveling in Malaita Island.
| September | |||
| Average temperature | 83°F | ||
| Highest temperature | 85°F | ||
| Lowest temperature | 81°F | ||
| Sea temperature | 85°F | ||
| Rainfall | 11.9in | ||
| Number of days with rainfall | 15 day(s) (50%) | ||
| Humidity | 83% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 42% | ||
| Length of day | 12:03 | ||
| Our opinion at whereandwhen.net | tolerable |
Climate in New Georgia Islands in september
In the month of september, maximum temperature is 85°F and minimum temperature is 81°F (for an average temperature of 83°F). The climate is quite pleasant there in september. With 19.4in over 21 days, the weather is rather to rain for your journey. Remember to pack adapted clothes.
With a correct weather, the month of september is okay (but not good time) for traveling in that area in Solomon islands.
| September | |||
| Average temperature | 83°F | ||
| Highest temperature | 85°F | ||
| Lowest temperature | 81°F | ||
| Sea temperature | 83°F | ||
| Rainfall | 19.4in | ||
| Number of days with rainfall | 21 day(s) (70%) | ||
| Humidity | 82% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 47% | ||
| Length of day | 12:04 | ||
| Our opinion at whereandwhen.net | bad |
All cities in Solomon islands in september
| Honiara in september | tolerable weather |
| Choiseul Island in september | very bad weather |
| Guadalcanal Island in september | tolerable weather |
| Malaita Island in september | tolerable weather |
| New Georgia Islands in september | bad weather |
| San Christobal Island in september | tolerable weather |
| Santa Isabel Island in september | bad weather |
Weather data for Solomon islands in september:
Weather data for Solomon islands in september is derived from an average of the weather forecast since 2009 in Solomon islands. There is a margin of error and these forecasts are to be considered as general information only. The weather in Solomon islands can vary slightly from year to year, but these predictions should limit surprises. So you can pack your bags and check when is the best time to go to Solomon islands.