San Sebastian in december: average Weather, Temperature and Climate
Weather in San Sebastian in december 2026
The weather in San Sebastian in december comes from statistical datas on the last 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
perfect weather UV index: 7
Weather at 6am
77°F
Clear/Sunny
74% of time
22%
4%
1%
Weather at 12pm
83°F
Clear/Sunny
58% of time
27%
13%
2%
Weather at 6pm
77°F
Clear/Sunny
52% of time
27%
15%
8%
Weather at 3am
76°F
70%
18%
11%
1%
Evolution of daily average temperature and precipitation in San Sebastian in december
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in San Sebastian in december.
The climate of San Sebastian in december is perfect
In december in San Sebastian, the climate is wet (with 2.3in of precipitation over 3 days). The weather is better from the previous month since in november it receives an average of 6.6in of rainfall over 9 days.
The climate pleasant in that locality this month. The thermometer averaged maximum of 83°F. The seasonal minimum is 77°F. Thus, the mean temperature average on this month of december in San Sebastian is 79°F. Note that these seasonal averages are in contrast with those observed in San Sebastian in december with a maximum record of 92°F in 2021 and a minimum record of 68°F in 2020.
On average, in San Sebastian, the days of december last 11:03. Sunrise is at 06:52 and sunset is at 17:55.
With a good weather, this month is recommended to go in this locality.
Seasonal average climate and temperature of San Sebastian in december
Check below seasonal norms These datas are compiled from the weather statements of the past years of december.
| December | |||||
| Outside temperature | |||||
| Average temperature | 79°F | ||||
| Highest temperature | 83°F | ||||
| Lowest temperature | 77°F | ||||
| Highest record temperature | 92°F (2021) | ||||
| Lowest record temperature | 68°F (2020) | ||||
| Number of days at +86°F | 5 day(s) (16%) | ||||
| Number of days at +65°F | 31 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 82°F | ||||
| Lowest sea temperature | 81°F | ||||
| Highest sea temperature | 83°F | ||||
| Wind | |||||
| Wind speed | 18km/h | ||||
| Wind temperature | 77°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 2.3in | ||||
| Number of days with rainfall | 3 day(s) (11%) | ||||
| Record daily rainfall | 1.7in (2010) | ||||
| Other climate data | |||||
| Humidity | 83% | ||||
| Visibility | 9.81km | ||||
| Cloud cover | 21% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 9 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:52 | ||||
| Time of sunset | 17:55 | ||||
| Length of day | 11:03 | ||||
| Our opinion about the weather in december | |||||
| Our opinion at whereandwhen.net | perfect | ||||
How was the weather last december?
Here is the day by day recorded weather in San Sebastian in december 2025:
74°F to 83°F
74°F to 85°F
68°F to 85°F
74°F to 85°F
76°F to 83°F
72°F to 81°F
74°F to 85°F
72°F to 83°F
70°F to 83°F
72°F to 85°F
68°F to 85°F
70°F to 83°F
72°F to 86°F
77°F to 86°F
70°F to 86°F
68°F to 79°F
72°F to 76°F
68°F to 81°F
74°F to 86°F
67°F to 79°F
72°F to 86°F
74°F to 85°F
72°F to 79°F
74°F to 83°F
74°F to 83°F
70°F to 81°F
70°F to 85°F
63°F to 77°F
61°F to 77°F
67°F to 83°F
67°F to 83°F
Map: other cities in Puerto Rico in december
Cities near San Sebastian:
| Quebradillas in december | perfect weather |
| Anasco in december | good weather |
| Isabela in december | perfect weather |
| Aguadilla in december | perfect weather |
| Mayagüez in december | good weather |
| Hatillo in december | perfect weather |
| Hormigueros in december | perfect weather |
| Rincon in december | perfect weather |
| San German in december | perfect weather |
| Arecibo in december | perfect weather |
| Utuado in december | perfect weather |
| Cabo Rojo in december | perfect weather |
Click over cities on the map for information about the weather in december.
San Sebastian
perfect weather
good
tolerable
bad
very bad
Weather data for San Sebastian in december:
Weather data for San Sebastian for december are derived from an average of the weather forecast since 2009 in San Sebastian. There is a margin of error and these forecasts are to be considered as general information only. The weather in San Sebastian 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 San Sebastian.