Guadalcanal Island in december: average Weather, Temperature and Climate
Weather in Guadalcanal Island in december 2026
The weather in Guadalcanal Island in december comes from statistical datas on the past years. You can view the weather statistics for the whole month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout december
very bad weather UV index: 7
Weather at 6am
81°F
Moderate rain at times
38% of time
25%
25%
12%
Weather at 12pm
86°F
Heavy rain
55% of time
36%
6%
4%
Weather at 6pm
79°F
Moderate rain at times
51% of time
29%
11%
8%
Weather at 3am
77°F
37%
24%
18%
16%
Evolution of daily average temperature and precipitation in Guadalcanal Island in december
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Guadalcanal Island in december.
The climate of Guadalcanal Island in december is very bad
The weather in december in Guadalcanal Island is wet (with 24in of precipitation over 24 days). Unfortunately, the weather conditions is worsening than the previous month since in november there is an average of 20in of precipitation over 23 days.
The climate quite pleasant here the month of december. Temperatures are up to 86°F. In the morning the temperature drops to 81°F. Thus, the mean temperature average in december in Guadalcanal Island is 85°F. Note that seasonal normals in contrast with those observed in Guadalcanal Island in the month of december with a maximum record of 94°F in 2015 and a minimum record of 70°F in 2020. You can plan to have about 20 days with temperatures above 86°F, or 65 of time.
On this month of december, day length in Guadalcanal Island is generally 12:41. The sun rises at 05:54 and sunset is at 18:35.
December: another location in Solomon islands?
If you want to go to Solomon islands in december, there are destinations with better weather than Guadalcanal Island:
In december, Choiseul Island has a tolerable climate, but better than Guadalcanal Island.
more information about Solomon islands's weather in december
Seasonal average climate and temperature of Guadalcanal Island in december
Check below seasonal norms These datas are set from the weather statements of the last years of december.
| December | |||||
| Outside temperature | |||||
| Average temperature | 85°F | ||||
| Highest temperature | 86°F | ||||
| Lowest temperature | 81°F | ||||
| Highest record temperature | 94°F (2015) | ||||
| Lowest record temperature | 70°F (2020) | ||||
| Number of days at +86°F | 20 day(s) (65%) | ||||
| Number of days at +65°F | 31 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 87°F | ||||
| Lowest sea temperature | 85°F | ||||
| Highest sea temperature | 89°F | ||||
| Wind | |||||
| Wind speed | 9km/h | ||||
| Wind temperature | 81°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 24in | ||||
| Number of days with rainfall | 24 day(s) (77%) | ||||
| Record daily rainfall | 7.5in (2018) | ||||
| Other climate data | |||||
| Humidity | 85% | ||||
| Visibility | 8.4km | ||||
| Cloud cover | 46% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 12 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:54 | ||||
| Time of sunset | 18:35 | ||||
| Length of day | 12:41 | ||||
| Our opinion about the weather in december | |||||
| Our opinion at whereandwhen.net | very bad | ||||
How was the weather last december?
Here is the day by day recorded weather in Guadalcanal Island in december 2025:
79°F to 85°F
79°F to 85°F
79°F to 88°F
79°F to 86°F
79°F to 88°F
79°F to 86°F
77°F to 86°F
77°F to 85°F
77°F to 85°F
77°F to 85°F
77°F to 83°F
77°F to 83°F
77°F to 85°F
77°F to 85°F
77°F to 86°F
77°F to 86°F
79°F to 86°F
79°F to 86°F
77°F to 86°F
77°F to 83°F
77°F to 81°F
76°F to 83°F
77°F to 88°F
77°F to 85°F
77°F to 86°F
79°F to 86°F
79°F to 86°F
79°F to 86°F
79°F to 88°F
79°F to 86°F
77°F to 85°F
Map: other cities in Solomon islands in december
Cities near Guadalcanal Island:
| Honiara in december | very bad weather |
| Malaita Island in december | very bad weather |
| San Christobal Island in december | very bad weather |
| Santa Isabel Island in december | bad weather |
| New Georgia Islands in december | bad weather |
| Choiseul Island in december | tolerable weather |
Click over cities on the map for information about the weather in december.
Guadalcanal Island
perfect weather
good
tolerable
bad
very bad
Weather data for Guadalcanal Island in december:
Weather data for Guadalcanal Island for december 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.