Guadalcanal Island in september: average Weather, Temperature and Climate
Weather in Guadalcanal Island in september 2025
The weather in Guadalcanal Island in the month of september comes from statistical datas on the last years. You can view the weather statistics the entire month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
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%
Evolution of daily average temperature and precipitation in Guadalcanal Island in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Guadalcanal Island in september.
The climate of Guadalcanal Island in september is tolerable
The weather in september in Guadalcanal Island is wet (with 13.9in of rainfall over 19 days). The weather's not getting better compared to the previous month since in august there is an average of 11.2in of precipitation over 17 days.
The climate quite pleasant here september. The thermometer averaged maximum of 86°F. On average, the recorded minimum temperature is 81°F. Thus, the mean temperature average on this month of september in Guadalcanal Island is 85°F. Note that these seasonal averages are in contrast with those observed in Guadalcanal Island in the month of september with a maximum record of 94°F in 2021 and a minimum record of 74°F in 2015. You can plan to have about 19 days with temperatures above 86°F, or 63 of time.
On this month of september, day length in Guadalcanal Island is generally 12:03. Sunrise is at 06:13 and sets at 18:16.
With a correct weather, september is okay (but not good) to go in this city in Solomon islands.
Seasonal average climate and temperature of Guadalcanal Island in september
Check below seasonal norms These datas are generated from the weather statements earlier years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 85°F | ||||
| Highest temperature | 86°F | ||||
| Lowest temperature | 81°F | ||||
| Highest record temperature | 94°F (2021) | ||||
| Lowest record temperature | 74°F (2015) | ||||
| Number of days at +86°F | 19 day(s) (63%) | ||||
| Number of days at +65°F | 30 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 85°F | ||||
| Lowest sea temperature | 82°F | ||||
| Highest sea temperature | 86°F | ||||
| Wind | |||||
| Wind speed | 13km/h | ||||
| Wind temperature | 81°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 13.9in | ||||
| Number of days with rainfall | 19 day(s) (62%) | ||||
| Record daily rainfall | 5.1in (2019) | ||||
| Other climate data | |||||
| Humidity | 85% | ||||
| Visibility | 8.83km | ||||
| Cloud cover | 44% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:13 | ||||
| Time of sunset | 18:16 | ||||
| Length of day | 12:03 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last september?
Here is the day by day recorded weather in Guadalcanal Island in september 2024:
77°F to 86°F
77°F to 86°F
77°F to 86°F
76°F to 85°F
76°F to 85°F
76°F to 86°F
74°F to 85°F
72°F to 83°F
74°F to 85°F
77°F to 85°F
77°F to 85°F
77°F to 86°F
77°F to 86°F
77°F to 85°F
76°F to 83°F
76°F to 85°F
77°F to 85°F
77°F to 83°F
76°F to 86°F
76°F to 86°F
77°F to 86°F
77°F to 88°F
77°F to 86°F
77°F to 86°F
76°F to 86°F
77°F to 86°F
77°F to 86°F
77°F to 86°F
77°F to 88°F
77°F to 85°F
Map: other cities in Solomon islands in september
Cities near Guadalcanal Island:
| Honiara in september | tolerable weather |
| Malaita Island in september | tolerable weather |
| San Christobal Island in september | tolerable weather |
| Santa Isabel Island in september | bad weather |
| New Georgia Islands in september | bad weather |
| Choiseul Island in september | very bad weather |
Click over cities on the map for information about the weather in september.
Guadalcanal Island
perfect weather
good
tolerable
bad
very bad
Weather data for Guadalcanal Island in september:
Weather data for Guadalcanal Island for september are derived from an average of the weather forecast since 2009 in Guadalcanal Island. There is a margin of error and these forecasts are to be considered as general information only. The weather in Guadalcanal Island can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Guadalcanal Island.