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San Francisco Weather in December with Sea Temperature

December weather in San Francisco includes average daytime air +14°C, nighttime +9°C, average sea temperature +12°C. Daily water temperatures usually range from +12°C to +13°C, which is cool for long swims. The tables below also show air temperature, wind, rain and humidity; for near-term water data, open the current 30-day water temperature forecast.
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Averaged values across several years

Daily air temperature for the month

Day Night

Daily sea water temperature for the month

Water
Tap a date to open detailed weather for that day
DecemberDayNightSea t°WindPrecipHumidity
1Mon
Clear/Sunny+16°C
Clear/Sunny+9°C
+13°C3 m/s0.3 mm70%
2Tue
Clear/Sunny+15°C
Clear/Sunny+9°C
+13°C2 m/s0.1 mm73%
3Wed
Clear/Sunny+14°C
Clear/Sunny+9°C
+13°C2 m/s0.4 mm75%
4Thu
Clear/Sunny+15°C
Partly Cloudy+10°C
+13°C2 m/s0 mm73%
5Fri
Clear/Sunny+15°C
Clear/Sunny+10°C
+13°C2 m/s0.6 mm74%
6Sat
Partly Cloudy+14°C
Clear/Sunny+10°C
+13°C2 m/s0.3 mm84%
7Sun
Clear/Sunny+14°C
Clear/Sunny+9°C
+13°C3 m/s0.4 mm80%
8Mon
Clear/Sunny+14°C
Clear/Sunny+9°C
+12°C2 m/s0.1 mm76%
9Tue
Clear/Sunny+13°C
Clear/Sunny+8°C
+12°C3 m/s0 mm65%
10Wed
Clear/Sunny+14°C
Clear/Sunny+8°C
+13°C3 m/s0.7 mm65%
11Thu
Clear/Sunny+13°C
Clear/Sunny+9°C
+13°C3 m/s0.2 mm68%
12Fri
Patchy rain nearby+14°C
Moderate or heavy rain shower+10°C
+13°C4 m/s2 mm84%
13Sat
Partly Cloudy+13°C
Clear/Sunny+9°C
+12°C4 m/s1.9 mm78%
14Sun
Clear/Sunny+12°C
Clear/Sunny+8°C
+12°C4 m/s2.5 mm76%
15Mon
Partly Cloudy+12°C
Clear/Sunny+7°C
+12°C3 m/s0.1 mm74%
16Tue
Clear/Sunny+14°C
Clear/Sunny+9°C
+12°C3 m/s0.5 mm74%
17Wed
Clear/Sunny+14°C
Clear/Sunny+9°C
+12°C3 m/s2.5 mm74%
18Thu
Clear/Sunny+13°C
Clear/Sunny+7°C
+12°C2 m/s1.2 mm78%
19Fri
Clear/Sunny+13°C
Clear/Sunny+8°C
+12°C3 m/s1.3 mm77%
20Sat
Clear/Sunny+14°C
Clear/Sunny+9°C
+12°C3 m/s1.6 mm78%
21Sun
Clear/Sunny+13°C
Partly Cloudy+10°C
+12°C4 m/s4.5 mm81%
22Mon
Clear/Sunny+14°C
Clear/Sunny+10°C
+12°C2 m/s1.8 mm87%
23Tue
Clear/Sunny+15°C
Clear/Sunny+10°C
+12°C3 m/s1.1 mm81%
24Wed
Partly Cloudy+14°C
Overcast+10°C
+12°C4 m/s2 mm78%
25Thu
Partly Cloudy+14°C
Partly Cloudy+10°C
+12°C4 m/s2.1 mm75%
26Fri
Patchy rain nearby+13°C
Partly Cloudy+10°C
+12°C4 m/s1.2 mm81%
27Sat
Overcast+13°C
Moderate rain at times+9°C
+12°C5 m/s2.1 mm83%
28Sun
Overcast+12°C
Clear/Sunny+8°C
+12°C3 m/s0.3 mm80%
29Mon
Clear/Sunny+13°C
Patchy rain nearby+8°C
+12°C4 m/s1.5 mm82%
30Tue
Clear/Sunny+13°C
Clear/Sunny+8°C
+12°C3 m/s0.5 mm78%
31Wed
Clear/Sunny+12°C
Partly Cloudy+8°C
+12°C3 m/s4.7 mm84%

Sea water temperature by months

Water +12°C

Day and night air temperature

Day +14°C Night +9°C

Weather highs and lows in San Francisco for december

Climate in San Francisco in december

  • Average daytime temperature: +14°C
  • Average nighttime temperature: +9°C
  • Sea water temperature: —
  • Precipitation (monthly average): 38.3 mm
  • Days with precipitation: 7.2
  • Humidity: 77%
  • Wind: 3 m/s
  • Data: 6 years / coverage 100%

Daily air temperature for the month

Day Night
Tap a date to open detailed weather for that day
DecemberDayNightSea t°WindPrecipHumidity
1Mon
Partly Cloudy+16°C
Fog+7°C
—2 m/s, NE0 mm82%
2Tue
Partly Cloudy+12°C
Partly Cloudy+8°C
—2 m/s, ENE0 mm88%
3Wed
Clear/Sunny+16°C
Fog+9°C
—2 m/s, NNE0 mm73%
4Thu
Clear/Sunny+15°C
Partly Cloudy+9°C
—2-3 m/s, NE0 mm60%
5Fri
Clear/Sunny+13°C
Clear/Sunny+11°C
—1-2 m/s, NE0 mm68%
6Sat
Fog+13°C
Fog+10°C
—2 m/s, N0 mm96%
7Sun
Fog+11°C
Fog+9°C
—1-2 m/s, NNW0 mm97%
8Mon
Fog+11°C
Fog+8°C
—1-2 m/s, ENE0 mm98%
9Tue
Fog+10°C
Fog+9°C
—1-2 m/s, N0 mm98%
10Wed
Fog+13°C
Fog+9°C
—2 m/s, NE0 mm95%
11Thu
Cloudy+12°C
Partly Cloudy+8°C
—2 m/s, NNE0 mm92%
12Fri
Cloudy+17°C
Mist+8°C
—2 m/s, NE0 mm86%
13Sat
Partly Cloudy+13°C
Clear/Sunny+9°C
—2 m/s, NE0 mm88%
14Sun
Fog+10°C
Fog+8°C
—2 m/s, NE0 mm97%
15Mon
Fog+11°C
Fog+8°C
—1-2 m/s, N0 mm96%
16Tue
Mist+14°C
Fog+13°C
—1-2 m/s, WSW0 mm97%
17Wed
Light rain+14°C
Fog+12°C
—3-4 m/s, WSW0.7 mm98%
18Thu
Overcast+13°C
Mist+9°C
—1-2 m/s, WSW0 mm92%
19Fri
Mist+13°C
Overcast+12°C
—2-3 m/s, SSW0 mm94%
20Sat
Fog+13°C
Moderate rain+13°C
—1-2 m/s, SSE3.9 mm98%
21Sun
Moderate rain+14°C
Moderate rain+13°C
—6-9 m/s, SSW26.1 mm97%
22Mon
Mist+13°C
Moderate or heavy rain in area with thunder+11°C
—2-3 m/s, NNW9.3 mm97%
23Tue
Overcast+15°C
Fog+13°C
—3-7 m/s, SSE0.8 mm89%
24Wed
Overcast+15°C
Overcast+12°C
—7-12 m/s, E5.4 mm82%
25Thu
Cloudy+14°C
Overcast+13°C
—10-12 m/s, SSW7.2 mm84%
26Fri
Overcast+13°C
Moderate or heavy rain shower+13°C
—8-11 m/s, SSE3.3 mm86%
27Sat
Overcast+11°C
Light rain shower+9°C
—3-5 m/s, N0.7 mm86%
28Sun
Mist+10°C
Clear/Sunny+7°C
—2-3 m/s, NE0 mm83%
29Mon
Clear/Sunny+13°C
Mist+5°C
—3 m/s, NE0 mm77%
30Tue
Clear/Sunny+13°C
Clear/Sunny+7°C
—3-4 m/s, NE0 mm75%
31Wed
Overcast+12°C
Overcast+10°C
—2-3 m/s, NE5.7 mm78%

Weather highs and lows in San Francisco for december

Climate in San Francisco in december

  • Year: 2025
  • Average daytime temperature: +13°C
  • Average nighttime temperature: +10°C
  • Water temperature: —
  • Precipitation (month): 63.1 mm
  • Days with precipitation: 7
  • Humidity: 88%
  • Wind: 3 m/s

Daily air temperature for the month

Day Night

Daily sea water temperature for the month

Water
Tap a date to open detailed weather for that day
DecemberDayNightSea t°WindPrecipHumidity
1Sun
Patchy rain nearby+17°C
Partly Cloudy+11°C
+13°C2-3 m/s, NE0.2 mm64%
2Mon
Cloudy+13°C
Clear/Sunny+9°C
+13°C2 m/s, NNE0 mm89%
3Tue
Cloudy+11°C
Cloudy+7°C
+13°C2 m/s, NNE0 mm96%
4Wed
Cloudy+11°C
Partly Cloudy+8°C
+13°C2 m/s, NNE0 mm94%
5Thu
Overcast+10°C
Overcast+8°C
+13°C1-2 m/s, NNW0 mm97%
6Fri
Overcast+10°C
Overcast+9°C
+13°C1-2 m/s, NE0 mm97%
7Sat
Overcast+12°C
Overcast+8°C
+13°C2 m/s, N0 mm97%
8Sun
Cloudy+11°C
Overcast+9°C
+12°C1-2 m/s, N0 mm94%
9Mon
Clear/Sunny+15°C
Overcast+7°C
+12°C2-4 m/s, ENE0 mm69%
10Tue
Clear/Sunny+14°C
Clear/Sunny+6°C
+13°C3-4 m/s, NE0 mm52%
11Wed
Overcast+14°C
Clear/Sunny+8°C
+13°C2 m/s, NE0 mm48%
12Thu
Patchy rain nearby+12°C
Moderate or heavy rain shower+11°C
+13°C5-7 m/s, WNW5.2 mm88%
13Fri
Partly Cloudy+12°C
Cloudy+10°C
+12°C4-5 m/s, SE0.2 mm85%
14Sat
Moderate or heavy rain shower+12°C
Moderate or heavy rain shower+10°C
+12°C8-10 m/s, W13.6 mm88%
15Sun
Overcast+9°C
Partly Cloudy+5°C
+12°C2 m/s, NE0 mm92%
16Mon
Patchy rain nearby+11°C
Overcast+8°C
+12°C2-3 m/s, ESE0.4 mm93%
17Tue
Overcast+12°C
Overcast+10°C
+12°C2 m/s, NNE0 mm94%
18Wed
Overcast+11°C
Overcast+7°C
+12°C2 m/s, NE0 mm95%
19Thu
Cloudy+11°C
Partly Cloudy+7°C
+12°C3 m/s, NNE0 mm93%
20Fri
Cloudy+13°C
Overcast+7°C
+12°C2 m/s, NE0 mm92%
21Sat
Patchy rain nearby+12°C
Cloudy+11°C
+12°C3-4 m/s, SSW0.7 mm93%
22Sun
Cloudy+14°C
Patchy rain nearby+12°C
+12°C2 m/s, ENE0.4 mm94%
23Mon
Overcast+14°C
Patchy rain nearby+13°C
+12°C1-2 m/s, ENE0.5 mm96%
24Tue
Overcast+14°C
Heavy rain at times+10°C
+12°C5-6 m/s, W5.6 mm90%
25Wed
Partly Cloudy+11°C
Clear/Sunny+8°C
+12°C2-3 m/s, W0 mm82%
26Thu
Patchy rain nearby+12°C
Overcast+10°C
+12°C2-3 m/s, SSE1.9 mm96%
27Fri
Overcast+13°C
Moderate or heavy rain shower+12°C
+12°C4-6 m/s, WSW5.3 mm97%
28Sat
Overcast+13°C
Overcast+11°C
+12°C2 m/s, SSW1 mm96%
29Sun
Overcast+13°C
Overcast+10°C
+12°C5-7 m/s, SW0.9 mm94%
30Mon
Partly Cloudy+11°C
Clear/Sunny+7°C
+12°C2-3 m/s, NNW0 mm74%
31Tue
Fog+8°C
Partly Cloudy+5°C
+12°C2 m/s, NNE0 mm96%

Weather highs and lows in San Francisco for december

Climate in San Francisco in december

  • Year: 2024
  • Average daytime temperature: +12°C
  • Average nighttime temperature: +9°C
  • Water temperature: —
  • Precipitation (month): 35.9 mm
  • Days with precipitation: 6
  • Humidity: 88%
  • Wind: 3 m/s

Daily air temperature for the month

Day Night
Tap a date to open detailed weather for that day
DecemberDayNightSea t°WindPrecipHumidity
1Fri
Clear/Sunny+15°C
Clear/Sunny+9°C
—5-6 m/s, NW0 mm78%
2Sat
Patchy rain nearby+15°C
Overcast+12°C
—2-3 m/s, SSE0.8 mm86%
3Sun
Cloudy+15°C
Patchy rain nearby+11°C
—2 m/s, SW0.1 mm88%
4Mon
Overcast+14°C
Overcast+12°C
—2 m/s, N0 mm91%
5Tue
Clear/Sunny+17°C
Clear/Sunny+12°C
—1-2 m/s, NNE0 mm74%
6Wed
Moderate rain at times+15°C
Clear/Sunny+11°C
—3-5 m/s, S0.6 mm84%
7Thu
Heavy rain at times+14°C
Overcast+10°C
—4-6 m/s, SW1.1 mm78%
8Fri
Clear/Sunny+14°C
Clear/Sunny+7°C
—3 m/s, NNE0 mm68%
9Sat
Clear/Sunny+14°C
Clear/Sunny+6°C
—2 m/s, NE0 mm45%
10Sun
Overcast+14°C
Clear/Sunny+7°C
—2 m/s, NNE0 mm42%
11Mon
Clear/Sunny+14°C
Clear/Sunny+10°C
—1-2 m/s, NNE0 mm61%
12Tue
Clear/Sunny+15°C
Partly Cloudy+11°C
—1-2 m/s, N0 mm82%
13Wed
Overcast+15°C
Clear/Sunny+9°C
—2-3 m/s, NE0 mm62%
14Thu
Clear/Sunny+15°C
Clear/Sunny+10°C
—3 m/s, NE0 mm54%
15Fri
Clear/Sunny+15°C
Overcast+10°C
—3 m/s, NE0 mm54%
16Sat
Clear/Sunny+17°C
Clear/Sunny+10°C
—3 m/s, NE0 mm48%
17Sun
Patchy rain nearby+17°C
Clear/Sunny+12°C
—2-3 m/s, NE12.6 mm45%
18Mon
Moderate rain at times+15°C
Overcast+11°C
—4 m/s, E7.1 mm91%
19Tue
Patchy rain nearby+16°C
Moderate or heavy rain shower+14°C
—5-6 m/s, SSW8.1 mm85%
20Wed
Moderate or heavy rain shower+15°C
Patchy rain nearby+12°C
—3-5 m/s, ENE5.7 mm87%
21Thu
Clear/Sunny+15°C
Cloudy+11°C
—3 m/s, NE0 mm82%
22Fri
Clear/Sunny+16°C
Clear/Sunny+11°C
—2-4 m/s, WSW0 mm80%
23Sat
Clear/Sunny+14°C
Clear/Sunny+10°C
—1-2 m/s, NW0 mm81%
24Sun
Clear/Sunny+13°C
Clear/Sunny+10°C
—1-2 m/s, SSE0 mm78%
25Mon
Clear/Sunny+15°C
Partly Cloudy+10°C
—1-2 m/s, N0 mm65%
26Tue
Partly Cloudy+15°C
Partly Cloudy+11°C
—2 m/s, NE0 mm73%
27Wed
Moderate rain at times+15°C
Clear/Sunny+11°C
—5-7 m/s, SSE0.8 mm76%
28Thu
Overcast+15°C
Patchy rain nearby+13°C
—2 m/s, NE0.1 mm88%
29Fri
Patchy rain nearby+17°C
Patchy rain nearby+12°C
—4-6 m/s, SSE3.3 mm86%
30Sat
Patchy rain nearby+14°C
Heavy rain at times+12°C
—3-4 m/s, NW2 mm82%
31Sun
Cloudy+13°C
Partly Cloudy+11°C
—2 m/s, ESE0.1 mm80%

Weather highs and lows in San Francisco for december

Climate in San Francisco in december

  • Year: 2023
  • Average daytime temperature: +15°C
  • Average nighttime temperature: +11°C
  • Water temperature: —
  • Precipitation (month): 42.4 mm
  • Days with precipitation: 7
  • Humidity: 73%
  • Wind: 3 m/s

Daily air temperature for the month

Day Night
Tap a date to open detailed weather for that day
DecemberDayNightSea t°WindPrecipHumidity
1Thu
Patchy rain nearby+11°C
Cloudy+7°C
—5-9 m/s, NW1.5 mm76%
2Fri
Clear/Sunny+12°C
Clear/Sunny+4°C
—3 m/s, ENE0 mm64%
3Sat
Patchy rain nearby+8°C
Overcast+5°C
—2 m/s, NNE2.2 mm71%
4Sun
Cloudy+14°C
Partly Cloudy+9°C
—4-5 m/s, SW0.2 mm76%
5Mon
Patchy rain nearby+14°C
Overcast+10°C
—3-4 m/s, SW3.8 mm78%
6Tue
Partly Cloudy+13°C
Heavy rain at times+8°C
—3 m/s, NE1.1 mm77%
7Wed
Clear/Sunny+14°C
Clear/Sunny+8°C
—1 m/s, E0 mm73%
8Thu
Partly Cloudy+13°C
Clear/Sunny+7°C
—2-4 m/s, SE0.2 mm72%
9Fri
Cloudy+11°C
Partly Cloudy+7°C
—2-3 m/s, S0 mm74%
10Sat
Moderate or heavy rain shower+12°C
Overcast+10°C
—8-11 m/s, S4.2 mm82%
11Sun
Overcast+12°C
Moderate rain at times+8°C
—7-8 m/s, SW1.2 mm75%
12Mon
Partly Cloudy+11°C
Moderate rain at times+7°C
—4-6 m/s, NNE0.9 mm81%
13Tue
Cloudy+11°C
Overcast+7°C
—2-4 m/s, E0 mm56%
14Wed
Clear/Sunny+12°C
Clear/Sunny+4°C
—2 m/s, NE0 mm65%
15Thu
Partly Cloudy+11°C
Clear/Sunny+4°C
—3-4 m/s, NE0 mm62%
16Fri
Clear/Sunny+13°C
Clear/Sunny+4°C
—3-4 m/s, NE0 mm58%
17Sat
Clear/Sunny+14°C
Clear/Sunny+4°C
—3-4 m/s, NE0 mm59%
18Sun
Clear/Sunny+13°C
Clear/Sunny+4°C
—2-3 m/s, NE0 mm62%
19Mon
Clear/Sunny+10°C
Clear/Sunny+4°C
—3-4 m/s, NE0 mm62%
20Tue
Partly Cloudy+12°C
Partly Cloudy+6°C
—2 m/s, NNE0 mm61%
21Wed
Overcast+12°C
Partly Cloudy+8°C
—2 m/s, S0 mm61%
22Thu
Clear/Sunny+13°C
Overcast+9°C
—2-3 m/s, NE0 mm76%
23Fri
Partly Cloudy+15°C
Partly Cloudy+9°C
—2-3 m/s, ENE0 mm76%
24Sat
Partly Cloudy+16°C
Clear/Sunny+8°C
—3-4 m/s, ENE0 mm78%
25Sun
Partly Cloudy+17°C
Clear/Sunny+9°C
—3-4 m/s, NE0 mm74%
26Mon
Cloudy+14°C
Clear/Sunny+10°C
—3 m/s, E1.2 mm75%
27Tue
Partly Cloudy+15°C
Moderate rain at times+10°C
—7-10 m/s, SW1.9 mm90%
28Wed
Clear/Sunny+14°C
Clear/Sunny+7°C
—3-4 m/s, WNW0 mm77%
29Thu
Overcast+11°C
Patchy rain nearby+9°C
—3-5 m/s, ESE1.1 mm81%
30Fri
Overcast+14°C
Overcast+11°C
—6-7 m/s, SSE0.7 mm97%
31Sat
Moderate or heavy rain shower+14°C
Moderate or heavy rain shower+10°C
—5-6 m/s, WSW22.1 mm93%

Weather highs and lows in San Francisco for december

Climate in San Francisco in december

  • Year: 2022
  • Average daytime temperature: +13°C
  • Average nighttime temperature: +7°C
  • Water temperature: —
  • Precipitation (month): 42.3 mm
  • Days with precipitation: 10
  • Humidity: 73%
  • Wind: 3 m/s

Daily air temperature for the month

Day Night
Tap a date to open detailed weather for that day
DecemberDayNightSea t°WindPrecipHumidity
1Wed
Clear/Sunny+21°C
Clear/Sunny+11°C
—2-4 m/s, NE0 mm54%
2Thu
Clear/Sunny+20°C
Clear/Sunny+11°C
—2-3 m/s, NNE0 mm55%
3Fri
Clear/Sunny+17°C
Partly Cloudy+11°C
—2-3 m/s, ENE0 mm57%
4Sat
Clear/Sunny+16°C
Clear/Sunny+11°C
—2-4 m/s, NW0 mm69%
5Sun
Clear/Sunny+17°C
Clear/Sunny+10°C
—2 m/s, NNW0 mm74%
6Mon
Partly Cloudy+14°C
Clear/Sunny+10°C
—2 m/s, WSW0 mm80%
7Tue
Cloudy+15°C
Patchy rain nearby+11°C
—3-4 m/s, W1.3 mm86%
8Wed
Patchy rain nearby+14°C
Clear/Sunny+11°C
—3-4 m/s, WSW0.1 mm80%
9Thu
Clear/Sunny+13°C
Cloudy+9°C
—5-6 m/s, NW0 mm61%
10Fri
Clear/Sunny+14°C
Cloudy+7°C
—2-3 m/s, NE0 mm52%
11Sat
Clear/Sunny+13°C
Clear/Sunny+9°C
—2-4 m/s, SSE0 mm58%
12Sun
Patchy rain nearby+12°C
Overcast+10°C
—7-8 m/s, SSE4.1 mm79%
13Mon
Patchy rain nearby+14°C
Moderate or heavy rain shower+8°C
—8-10 m/s, SSW9.2 mm87%
14Tue
Partly Cloudy+12°C
Moderate rain at times+7°C
—4-5 m/s, NW1.2 mm72%
15Wed
Overcast+11°C
Clear/Sunny+7°C
—6-10 m/s, S0.4 mm72%
16Thu
Clear/Sunny+13°C
Moderate or heavy rain shower+8°C
—4-7 m/s, WNW2.2 mm76%
17Fri
Clear/Sunny+12°C
Clear/Sunny+6°C
—2 m/s, NE0 mm70%
18Sat
Clear/Sunny+12°C
Clear/Sunny+4°C
—4 m/s, NE0 mm62%
19Sun
Clear/Sunny+13°C
Clear/Sunny+5°C
—2-3 m/s, SSE0 mm68%
20Mon
Clear/Sunny+13°C
Clear/Sunny+8°C
—5 m/s, SE0 mm70%
21Tue
Overcast+11°C
Partly Cloudy+7°C
—4-5 m/s, ESE0.1 mm80%
22Wed
Overcast+14°C
Moderate rain at times+9°C
—3-4 m/s, E0.9 mm90%
23Thu
Patchy rain nearby+15°C
Patchy rain nearby+10°C
—5-6 m/s, W5 mm90%
24Fri
Clear/Sunny+14°C
Moderate rain at times+10°C
—4-6 m/s, WNW0.7 mm77%
25Sat
Moderate or heavy rain shower+13°C
Partly Cloudy+8°C
—6-7 m/s, SSW4.6 mm78%
26Sun
Patchy rain nearby+11°C
Patchy rain nearby+7°C
—5-6 m/s, S0.4 mm72%
27Mon
Cloudy+11°C
Moderate rain at times+6°C
—7-8 m/s, WNW3.9 mm73%
28Tue
Patchy rain nearby+9°C
Clear/Sunny+4°C
—3-4 m/s, ESE0.6 mm63%
29Wed
Moderate rain at times+9°C
Moderate or heavy rain shower+5°C
—4-7 m/s, NE3.7 mm91%
30Thu
Clear/Sunny+10°C
Cloudy+5°C
—4-6 m/s, NE0 mm76%
31Fri
Partly Cloudy+11°C
Clear/Sunny+6°C
—2-4 m/s, NNE0 mm78%

Weather highs and lows in San Francisco for december

Climate in San Francisco in december

  • Year: 2021
  • Average daytime temperature: +13°C
  • Average nighttime temperature: +8°C
  • Water temperature: —
  • Precipitation (month): 38.4 mm
  • Days with precipitation: 9
  • Humidity: 73%
  • Wind: 4 m/s

Daily air temperature for the month

Day Night
Tap a date to open detailed weather for that day
DecemberDayNightSea t°WindPrecipHumidity
1Tue
Clear/Sunny+18°C
Clear/Sunny+10°C
—2 m/s, SE0 mm68%
2Wed
Clear/Sunny+16°C
Clear/Sunny+8°C
—3-4 m/s, NNE0 mm56%
3Thu
Clear/Sunny+17°C
Clear/Sunny+9°C
—2 m/s, NNE0 mm63%
4Fri
Clear/Sunny+18°C
Clear/Sunny+9°C
—2 m/s, NE0 mm48%
5Sat
Clear/Sunny+17°C
Clear/Sunny+11°C
—2-3 m/s, ESE0 mm53%
6Sun
Partly Cloudy+16°C
Clear/Sunny+9°C
—2 m/s, NNE0 mm67%
7Mon
Clear/Sunny+20°C
Clear/Sunny+10°C
—5-6 m/s, NE0 mm50%
8Tue
Clear/Sunny+20°C
Clear/Sunny+11°C
—2 m/s, NE0 mm45%
9Wed
Clear/Sunny+17°C
Clear/Sunny+9°C
—3-4 m/s, NNE0 mm44%
10Thu
Clear/Sunny+15°C
Clear/Sunny+10°C
—3-5 m/s, WSW0 mm64%
11Fri
Partly Cloudy+12°C
Clear/Sunny+9°C
—3-6 m/s, WNW0 mm71%
12Sat
Overcast+14°C
Moderate or heavy rain shower+10°C
—3-4 m/s, W1.9 mm90%
13Sun
Moderate rain at times+14°C
Partly Cloudy+10°C
—4-6 m/s, SSW2.1 mm87%
14Mon
Clear/Sunny+13°C
Clear/Sunny+8°C
—3-4 m/s, ESE0 mm78%
15Tue
Partly Cloudy+12°C
Clear/Sunny+9°C
—1 m/s, ESE0 mm66%
16Wed
Partly Cloudy+14°C
Clear/Sunny+8°C
—2-3 m/s, E0.2 mm70%
17Thu
Clear/Sunny+13°C
Heavy rain at times+9°C
—5-6 m/s, WNW1.8 mm80%
18Fri
Clear/Sunny+15°C
Clear/Sunny+8°C
—1-2 m/s, SE0 mm65%
19Sat
Clear/Sunny+15°C
Clear/Sunny+7°C
—2-4 m/s, SSE0 mm60%
20Sun
Clear/Sunny+15°C
Clear/Sunny+7°C
—3-4 m/s, NE0 mm62%
21Mon
Clear/Sunny+15°C
Clear/Sunny+7°C
—4 m/s, SE0 mm70%
22Tue
Clear/Sunny+16°C
Clear/Sunny+8°C
—2 m/s, ENE0 mm83%
23Wed
Clear/Sunny+15°C
Clear/Sunny+7°C
—3-5 m/s, NE0 mm52%
24Thu
Partly Cloudy+13°C
Overcast+7°C
—3-5 m/s, NE0 mm62%
25Fri
Moderate rain at times+13°C
Partly Cloudy+9°C
—3-6 m/s, SE1 mm68%
26Sat
Clear/Sunny+14°C
Partly Cloudy+9°C
—4-5 m/s, W0.1 mm82%
27Sun
Clear/Sunny+12°C
Overcast+7°C
—2-3 m/s, ESE0 mm78%
28Mon
Cloudy+12°C
Patchy rain nearby+8°C
—4-5 m/s, NNE0.2 mm74%
29Tue
Clear/Sunny+15°C
Clear/Sunny+8°C
—2 m/s, NNE0 mm61%
30Wed
Clear/Sunny+13°C
Clear/Sunny+7°C
—2-3 m/s, NW0 mm65%
31Thu
Clear/Sunny+13°C
Patchy rain nearby+8°C
—4-6 m/s, ESE0.1 mm78%

Weather highs and lows in San Francisco for december

Climate in San Francisco in december

  • Year: 2020
  • Average daytime temperature: +15°C
  • Average nighttime temperature: +9°C
  • Water temperature: —
  • Precipitation (month): 7.4 mm
  • Days with precipitation: 4
  • Humidity: 66%
  • Wind: 3 m/s

Weather in San Francisco in december by year

Year Day Night Precipitation Days with precipitation Water
2025 +13°C +10°C 63.1 mm 7 —
2024 +12°C +9°C 35.9 mm 6 —
2023 +15°C +11°C 42.4 mm 7 —
2022 +13°C +7°C 42.3 mm 10 —
2021 +13°C +8°C 38.4 mm 9 —
2020 +15°C +9°C 7.4 mm 4 —

Comparison december in San Francisco with other months

Month Day Night Days with precipitation Sunny days
January +14°C +8°C 5 13
February +14°C +8°C 4 14
March +14°C +9°C 6 12
April +16°C +9°C 1 17
May +18°C +11°C 1 21
June +19°C +12°C 0 21
July +20°C +13°C 0 23
August +21°C +14°C 0 23
September +21°C +14°C 0 20
October +20°C +13°C 1 18
November +16°C +10°C 4 16
December +14°C +9°C 7 10