Places › San Antonio, TX › December
San Antonio in December
One of the best months — score 94 of 100
Typical December days in San Antonio reach about 65°F with nights near 42°F.
Avg high
65°F
1991–2020 normal
Avg low
42°F
1991–2020 normal
Rain total
2.00 in
in a typical December
Rain days
7
days with at least 0.01 in
Daylight
10h 16m
at mid-December, computed
What to pack for San Antonio in December
- A warm jacket for evenings and early starts.
- Layers — afternoons run about 22° warmer than mornings.
- A compact rain layer — about 7 days see rain in a typical December.
Every packing line is triggered by a number on this page — the rules are on How we pick.
December vs. the alternatives
The whole year in San Antonio
JAN
63°F
Rain 7 days
Daylight 10h 27mFEB
68°F
★ Best
Rain 7 days
Daylight 11h 06mMAR
74°F
Rain 8 days
Daylight 11h 54mAPR
80°F
Rain 6 days
Daylight 12h 50mMAY
87°F
Rain 8 days
Daylight 13h 36mJUN
92°F
Rain 7 days
Daylight 14h 01mJUL
95°F
Rain 5 days
Daylight 13h 51mAUG
96°F
Rain 5 days
Daylight 13h 12mSEP
90°F
Rain 7 days
Daylight 12h 18mOCT
82°F
Rain 6 days
Daylight 11h 24mNOV
72°F
★ Best
Rain 6 days
Daylight 10h 38mDEC
65°F
Rain 7 days
Daylight 10h 16m
63°F
Rain 7 days
Daylight 10h 27mFEB
68°F
★ Best
Rain 7 days
Daylight 11h 06mMAR
74°F
Rain 8 days
Daylight 11h 54mAPR
80°F
Rain 6 days
Daylight 12h 50mMAY
87°F
Rain 8 days
Daylight 13h 36mJUN
92°F
Rain 7 days
Daylight 14h 01mJUL
95°F
Rain 5 days
Daylight 13h 51mAUG
96°F
Rain 5 days
Daylight 13h 12mSEP
90°F
Rain 7 days
Daylight 12h 18mOCT
82°F
Rain 6 days
Daylight 11h 24mNOV
72°F
★ Best
Rain 6 days
Daylight 10h 38mDEC
65°F
Rain 7 days
Daylight 10h 16m
Averages are the 1991–2020 climate normals (NOAA National Centers for Environmental Information) for the station named on each page. Rain days = days with at least 0.01 in of precipitation. Daylight is computed for the middle of the month.