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December

Saint-Brieuc Weather in December with Sea Temperature

December weather in Saint-Brieuc includes average daytime air +10°C, nighttime +6°C, average sea temperature +11°C. Daily water temperatures usually range from +10°C to +12°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

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December	Day	Night	Sea t°	Wind	Precip	Humidity
1Mon	+11°C	+7°C	+12°C	6 m/s	0.7 mm	82%
2Tue	+9°C	+5°C	+12°C	4 m/s	0.1 mm	76%
3Wed	+9°C	+4°C	+12°C	5 m/s	1.1 mm	80%
4Thu	+9°C	+5°C	+12°C	6 m/s	0.7 mm	81%
5Fri	+10°C	+5°C	+12°C	7 m/s	0.7 mm	81%
6Sat	+10°C	+5°C	+12°C	6 m/s	0.1 mm	80%
7Sun	+10°C	+6°C	+11°C	7 m/s	1.2 mm	82%
8Mon	+9°C	+6°C	+11°C	6 m/s	0.5 mm	80%
9Tue	+10°C	+6°C	+11°C	7 m/s	1.2 mm	83%
10Wed	+10°C	+6°C	+11°C	6 m/s	1 mm	84%
11Thu	+10°C	+5°C	+11°C	5 m/s	0.4 mm	85%
12Fri	+9°C	+5°C	+11°C	5 m/s	0.1 mm	82%
13Sat	+9°C	+5°C	+11°C	4 m/s	0.2 mm	79%
14Sun	+11°C	+5°C	+11°C	4 m/s	0.3 mm	87%
15Mon	+11°C	+7°C	+11°C	5 m/s	0 mm	84%
16Tue	+10°C	+5°C	+11°C	4 m/s	0.2 mm	84%
17Wed	+10°C	+4°C	+11°C	4 m/s	0 mm	84%
18Thu	+12°C	+6°C	+11°C	8 m/s	0.4 mm	85%
19Fri	+12°C	+7°C	+11°C	7 m/s	0.6 mm	84%
20Sat	+10°C	+6°C	+11°C	5 m/s	0.2 mm	83%
21Sun	+11°C	+6°C	+11°C	6 m/s	0.5 mm	87%
22Mon	+11°C	+7°C	+11°C	7 m/s	0.9 mm	82%
23Tue	+11°C	+7°C	+11°C	7 m/s	0.6 mm	82%
24Wed	+11°C	+8°C	+11°C	6 m/s	0.6 mm	86%
25Thu	+10°C	+6°C	+11°C	5 m/s	0.4 mm	83%
26Fri	+10°C	+6°C	+10°C	4 m/s	0 mm	83%
27Sat	+10°C	+5°C	+10°C	6 m/s	0.6 mm	84%
28Sun	+9°C	+6°C	+10°C	7 m/s	0.5 mm	79%
29Mon	+10°C	+6°C	+10°C	5 m/s	0.1 mm	85%
30Tue	+11°C	+6°C	+10°C	6 m/s	0.5 mm	84%
31Wed	+11°C	+6°C	+10°C	7 m/s	0.8 mm	82%

Sea water temperature by months

Water +11°C

Day and night air temperature

Day +10°C Night +6°C

Weather highs and lows in Saint-Brieuc for december

Warmest day: 18 december, +12°C
Coldest night: 17 december, +4°C
Max precipitation: 7 december, 1.2 mm
Warmest sea water: 1 december, +12°C
Coldest sea water: 26 december, +10°C

Climate in Saint-Brieuc in december

Average daytime temperature: +10°C
Average nighttime temperature: +6°C
Sea water temperature: —
Precipitation (monthly average): 15 mm
Days with precipitation: 5.5
Humidity: 83%
Wind: 6 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

December	Day	Night	Sea t°	Wind	Precip	Humidity
1Mon	+11°C	+6°C	—	10-12 m/s, SSW	0.3 mm	79%
2Tue	+10°C	+5°C	—	5-6 m/s, SSW	0 mm	85%
3Wed	+11°C	+4°C	—	5-6 m/s, SSW	0 mm	82%
4Thu	+9°C	+4°C	—	6-7 m/s, WSW	0.7 mm	81%
5Fri	+14°C	+4°C	—	7-10 m/s, S	1.4 mm	83%
6Sat	+12°C	+10°C	—	9-10 m/s, WSW	0 mm	76%
7Sun	+14°C	+11°C	—	8-11 m/s, SW	1.9 mm	88%
8Mon	+14°C	+12°C	—	7-9 m/s, SW	0.4 mm	90%
9Tue	+13°C	+11°C	—	10-11 m/s, S	0.1 mm	84%
10Wed	+13°C	+8°C	—	4-5 m/s, WSW	0 mm	88%
11Thu	+12°C	+6°C	—	5-6 m/s, S	0 mm	90%
12Fri	+11°C	+7°C	—	4-7 m/s, NW	0.2 mm	82%
13Sat	+11°C	+7°C	—	2-3 m/s, NE	0 mm	80%
14Sun	+11°C	+5°C	—	4-6 m/s, SSW	0 mm	87%
15Mon	+14°C	+11°C	—	7-9 m/s, S	0 mm	84%
16Tue	+11°C	+7°C	—	5-8 m/s, NNW	0.3 mm	82%
17Wed	+10°C	+5°C	—	4-8 m/s, SSW	0 mm	82%
18Thu	+14°C	+9°C	—	12 m/s, S	1.1 mm	82%
19Fri	+11°C	+6°C	—	4-5 m/s, WSW	0.1 mm	80%
20Sat	+10°C	+4°C	—	5-8 m/s, SSE	0.7 mm	84%
21Sun	+7°C	+6°C	—	2-3 m/s, SE	1.4 mm	91%
22Mon	+10°C	+6°C	—	3-4 m/s, SSE	0 mm	92%
23Tue	+9°C	+4°C	—	4-6 m/s, ESE	0 mm	88%
24Wed	+7°C	+5°C	—	9-11 m/s, NE	0 mm	74%
25Thu	+5°C	-2°C	—	8-12 m/s, E	1.2 mm	73%
26Fri	+4°C	0°C	—	4-5 m/s, ENE	0 mm	79%
27Sat	+6°C	+1°C	—	4-5 m/s, ENE	0 mm	82%
28Sun	+6°C	+1°C	—	5-6 m/s, ENE	0 mm	82%
29Mon	+6°C	+2°C	—	4-5 m/s, ENE	0 mm	79%
30Tue	+6°C	+3°C	—	7-8 m/s, E	0 mm	79%
31Wed	+6°C	+1°C	—	4-5 m/s, E	0 mm	79%

Weather highs and lows in Saint-Brieuc for december

Warmest day: 5 december, +14°C
Coldest night: 25 december, -2°C
Max precipitation: 7 december, 1.9 mm
Warmest water: —
Coldest water: —

Climate in Saint-Brieuc in december

Year: 2025
Average daytime temperature: +10°C
Average nighttime temperature: +6°C
Water temperature: —
Precipitation (month): 9.8 mm
Days with precipitation: 5
Humidity: 83%
Wind: 6 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

December	Day	Night	Sea t°	Wind	Precip	Humidity
1Sun	+15°C	+12°C	+12°C	7-8 m/s, SSW	2.2 mm	87%
2Mon	+12°C	+7°C	+12°C	6-7 m/s, WNW	0 mm	72%
3Tue	+9°C	+6°C	+12°C	3-4 m/s, WSW	0 mm	67%
4Wed	+11°C	+6°C	+12°C	4-5 m/s, SSW	0 mm	87%
5Thu	+15°C	+11°C	+12°C	7-9 m/s, SW	0 mm	92%
6Fri	+13°C	+8°C	+12°C	6-8 m/s, WSW	0 mm	78%
7Sat	+14°C	+7°C	+11°C	12-14 m/s, WNW	0.3 mm	78%
8Sun	+8°C	+7°C	+11°C	12-13 m/s, N	1.6 mm	75%
9Mon	+9°C	+8°C	+11°C	9-10 m/s, NNE	2.6 mm	81%
10Tue	+8°C	+5°C	+11°C	6-8 m/s, ENE	1.1 mm	84%
11Wed	+7°C	+4°C	+11°C	6-7 m/s, ENE	0.1 mm	75%
12Thu	+6°C	+2°C	+11°C	4-5 m/s, E	0 mm	82%
13Fri	+6°C	+2°C	+11°C	1-2 m/s, E	0 mm	82%
14Sat	+9°C	+3°C	+11°C	4-5 m/s, NW	0 mm	85%
15Sun	+12°C	+5°C	+11°C	4-6 m/s, W	0 mm	88%
16Mon	+11°C	+7°C	+11°C	4 m/s, SW	0 mm	87%
17Tue	+12°C	+6°C	+11°C	5-8 m/s, SSW	0 mm	90%
18Wed	+14°C	+12°C	+11°C	9-11 m/s, SW	0.2 mm	87%
19Thu	+13°C	+6°C	+11°C	8-9 m/s, NW	0.3 mm	74%
20Fri	+10°C	+4°C	+11°C	5-8 m/s, WSW	0 mm	79%
21Sat	+12°C	+6°C	+11°C	6-8 m/s, WSW	0 mm	88%
22Sun	+11°C	+6°C	+11°C	10-11 m/s, NW	0.9 mm	78%
23Mon	+9°C	+7°C	+11°C	7-9 m/s, NNW	0.1 mm	66%
24Tue	+12°C	+10°C	+11°C	3-5 m/s, NW	0.2 mm	96%
25Wed	+13°C	+11°C	+11°C	1-2 m/s, ESE	0 mm	89%
26Thu	+11°C	+8°C	+10°C	2-3 m/s, NE	0 mm	88%
27Fri	+10°C	+5°C	+10°C	2 m/s, ENE	0 mm	85%
28Sat	+8°C	+4°C	+10°C	1-2 m/s, NW	0 mm	63%
29Sun	+11°C	+5°C	+10°C	1 m/s, NNW	0.1 mm	88%
30Mon	+10°C	+6°C	+10°C	2-3 m/s, SSW	0.1 mm	83%
31Tue	+12°C	+5°C	+10°C	5-8 m/s, SSW	0 mm	81%

Weather highs and lows in Saint-Brieuc for december

Warmest day: 1 december, +15°C
Coldest night: 12 december, +2°C
Max precipitation: 9 december, 2.6 mm
Warmest water: 1 december, +12°C
Coldest water: 26 december, +10°C

Climate in Saint-Brieuc in december

Year: 2024
Average daytime temperature: +11°C
Average nighttime temperature: +7°C
Water temperature: —
Precipitation (month): 9.8 mm
Days with precipitation: 4
Humidity: 82%
Wind: 5 m/s

Daily air temperature for the month

Day Night

Tap a date to open detailed weather for that day

December	Day	Night	Sea t°	Wind	Precip	Humidity
1Fri	+6°C	+4°C	—	4-5 m/s, ENE	0.2 mm	84%
2Sat	+6°C	+2°C	—	2-3 m/s, NE	0 mm	78%
3Sun	+10°C	+4°C	—	6-8 m/s, SSW	0.8 mm	83%
4Mon	+11°C	+7°C	—	10-11 m/s, WNW	3.1 mm	85%
5Tue	+9°C	+5°C	—	8-10 m/s, WNW	0.1 mm	69%
6Wed	+8°C	+5°C	—	4-6 m/s, S	0.1 mm	80%
7Thu	+11°C	+7°C	—	8-10 m/s, S	2 mm	89%
8Fri	+11°C	+8°C	—	6-7 m/s, WSW	0 mm	85%
9Sat	+14°C	+9°C	—	9-11 m/s, WSW	2.9 mm	87%
10Sun	+14°C	+8°C	—	7-10 m/s, SSW	0.1 mm	91%
11Mon	+14°C	+10°C	—	6-7 m/s, SW	0 mm	89%
12Tue	+12°C	+10°C	—	7-9 m/s, SW	0 mm	86%
13Wed	+10°C	+8°C	—	6-8 m/s, NNW	0.2 mm	82%
14Thu	+12°C	+5°C	—	4-6 m/s, SW	0.1 mm	86%
15Fri	+10°C	+7°C	—	3-4 m/s, NNW	0 mm	76%
16Sat	+10°C	+5°C	—	2 m/s, SSE	0 mm	76%
17Sun	+10°C	+3°C	—	3-4 m/s, SSW	0 mm	84%
18Mon	+11°C	+5°C	—	4-6 m/s, SW	0 mm	92%
19Tue	+12°C	+8°C	—	6-8 m/s, SW	0.1 mm	91%
20Wed	+11°C	+7°C	—	6-8 m/s, WNW	0.1 mm	79%
21Thu	+11°C	+10°C	—	9 m/s, WNW	0.1 mm	89%
22Fri	+11°C	+9°C	—	8-9 m/s, WNW	0.1 mm	82%
23Sat	+11°C	+8°C	—	6-7 m/s, W	0 mm	79%
24Sun	+13°C	+9°C	—	8-9 m/s, SW	0 mm	83%
25Mon	+13°C	+11°C	—	7-8 m/s, SW	0 mm	81%
26Tue	+12°C	+10°C	—	4-8 m/s, SSW	0.3 mm	86%
27Wed	+13°C	+10°C	—	9-11 m/s, SSW	0.1 mm	83%
28Thu	+12°C	+9°C	—	8-9 m/s, SW	0 mm	79%
29Fri	+12°C	+8°C	—	8-9 m/s, WSW	0 mm	83%
30Sat	+12°C	+6°C	—	7-11 m/s, SSW	0 mm	87%
31Sun	+9°C	+7°C	—	10-11 m/s, WSW	1.8 mm	78%

Weather highs and lows in Saint-Brieuc for december

Warmest day: 9 december, +14°C
Coldest night: 2 december, +2°C
Max precipitation: 4 december, 3.1 mm
Warmest water: —
Coldest water: —

Climate in Saint-Brieuc in december

Year: 2023
Average daytime temperature: +11°C
Average nighttime temperature: +7°C
Water temperature: —
Precipitation (month): 12.2 mm
Days with precipitation: 4
Humidity: 83%
Wind: 6 m/s

Daily air temperature for the month

Day Night

Tap a date to open detailed weather for that day

December	Day	Night	Sea t°	Wind	Precip	Humidity
1Thu	+10°C	+4°C	—	3-4 m/s, ENE	0 mm	84%
2Fri	+8°C	+4°C	—	4-5 m/s, ENE	0.5 mm	78%
3Sat	+6°C	+2°C	—	6 m/s, ENE	0.4 mm	77%
4Sun	+6°C	+2°C	—	3-4 m/s, ENE	0.1 mm	80%
5Mon	+7°C	+2°C	—	3-4 m/s, SE	0 mm	84%
6Tue	+8°C	+1°C	—	4 m/s, E	0 mm	86%
7Wed	+7°C	+3°C	—	2 m/s, ENE	0.2 mm	85%
8Thu	+6°C	+2°C	—	2-3 m/s, ENE	1.2 mm	79%
9Fri	+7°C	+1°C	—	3 m/s, E	0 mm	79%
10Sat	+6°C	0°C	—	2 m/s, WNW	0 mm	77%
11Sun	+5°C	0°C	—	4-5 m/s, SW	0 mm	82%
12Mon	+4°C	-1°C	—	3-4 m/s, E	0 mm	79%
13Tue	+4°C	-1°C	—	4 m/s, SE	0 mm	59%
14Wed	+7°C	+3°C	—	4-6 m/s, SW	1.7 mm	95%
15Thu	+6°C	+1°C	—	7 m/s, ENE	0.1 mm	80%
16Fri	+5°C	0°C	—	3 m/s, ESE	0 mm	82%
17Sat	+3°C	-2°C	—	3-4 m/s, SE	0 mm	70%
18Sun	+11°C	-2°C	—	7-11 m/s, SSE	1.1 mm	82%
19Mon	+14°C	+11°C	—	11-12 m/s, S	2.2 mm	86%
20Tue	+13°C	+8°C	—	6-11 m/s, S	0.1 mm	87%
21Wed	+12°C	+7°C	—	5-6 m/s, WSW	0.6 mm	84%
22Thu	+14°C	+11°C	—	8-9 m/s, SSW	1.7 mm	90%
23Fri	+14°C	+10°C	—	8-9 m/s, WSW	2.8 mm	86%
24Sat	+12°C	+8°C	—	5-6 m/s, SSW	2.1 mm	88%
25Sun	+11°C	+8°C	—	5-6 m/s, NNW	1 mm	90%
26Mon	+10°C	+4°C	—	5-6 m/s, WNW	0 mm	74%
27Tue	+10°C	+4°C	—	6-7 m/s, SSW	0.1 mm	79%
28Wed	+12°C	+9°C	—	9-12 m/s, SSW	0.5 mm	84%
29Thu	+10°C	+6°C	—	6-8 m/s, SW	0 mm	80%
30Fri	+14°C	+6°C	—	8-11 m/s, SW	2.6 mm	88%
31Sat	+15°C	+13°C	—	12-13 m/s, SSW	2.9 mm	83%

Weather highs and lows in Saint-Brieuc for december

Warmest day: 31 december, +15°C
Coldest night: 17 december, -2°C
Max precipitation: 31 december, 2.9 mm
Warmest water: —
Coldest water: —

Climate in Saint-Brieuc in december

Year: 2022
Average daytime temperature: +9°C
Average nighttime temperature: +4°C
Water temperature: —
Precipitation (month): 21.9 mm
Days with precipitation: 10
Humidity: 82%
Wind: 5 m/s

Daily air temperature for the month

Day Night

Tap a date to open detailed weather for that day

December	Day	Night	Sea t°	Wind	Precip	Humidity
1Wed	+11°C	+8°C	—	8-9 m/s, WNW	0.9 mm	81%
2Thu	+7°C	+3°C	—	6-8 m/s, NNW	0.3 mm	66%
3Fri	+12°C	+3°C	—	6-8 m/s, W	1.1 mm	88%
4Sat	+11°C	+7°C	—	8-9 m/s, WNW	0 mm	78%
5Sun	+9°C	+5°C	—	8 m/s, NNW	0.3 mm	69%
6Mon	+10°C	+4°C	—	6-9 m/s, WSW	0 mm	79%
7Tue	+9°C	+5°C	—	7-11 m/s, S	2.5 mm	76%
8Wed	+7°C	+3°C	—	7 m/s, WSW	0 mm	74%
9Thu	+10°C	+3°C	—	5-6 m/s, WSW	1.4 mm	80%
10Fri	+8°C	+5°C	—	9-10 m/s, NW	0.2 mm	73%
11Sat	+11°C	+5°C	—	4 m/s, SSW	0 mm	88%
12Sun	+13°C	+9°C	—	4 m/s, SW	0 mm	82%
13Mon	+12°C	+7°C	—	4-5 m/s, SSE	0 mm	82%
14Tue	+13°C	+8°C	—	2-3 m/s, W	0 mm	86%
15Wed	+11°C	+8°C	—	2-3 m/s, SE	0 mm	89%
16Thu	+11°C	+6°C	—	3-4 m/s, E	0 mm	90%
17Fri	+11°C	+6°C	—	5-6 m/s, ENE	0 mm	90%
18Sat	+11°C	+4°C	—	4-5 m/s, E	0 mm	80%
19Sun	+9°C	+4°C	—	4-6 m/s, E	0 mm	88%
20Mon	+7°C	+3°C	—	4-5 m/s, E	0 mm	90%
21Tue	+7°C	0°C	—	4 m/s, E	0 mm	80%
22Wed	+6°C	0°C	—	5 m/s, SSE	0 mm	64%
23Thu	+12°C	+4°C	—	5-6 m/s, SSW	0 mm	91%
24Fri	+12°C	+9°C	—	5-6 m/s, SSW	0.1 mm	93%
25Sat	+11°C	+8°C	—	4-5 m/s, SSE	0 mm	90%
26Sun	+12°C	+8°C	—	4-5 m/s, SW	0 mm	90%
27Mon	+13°C	+9°C	—	6-7 m/s, SW	0.5 mm	92%
28Tue	+12°C	+10°C	—	8-9 m/s, WSW	0 mm	84%
29Wed	+15°C	+13°C	—	8-9 m/s, WSW	0.4 mm	94%
30Thu	+16°C	+12°C	—	8-9 m/s, SW	0 mm	86%
31Fri	+15°C	+10°C	—	6-8 m/s, SSW	0 mm	88%

Weather highs and lows in Saint-Brieuc for december

Warmest day: 30 december, +16°C
Coldest night: 21 december, 0°C
Max precipitation: 7 december, 2.5 mm
Warmest water: —
Coldest water: —

Climate in Saint-Brieuc in december

Year: 2021
Average daytime temperature: +11°C
Average nighttime temperature: +6°C
Water temperature: —
Precipitation (month): 7.7 mm
Days with precipitation: 3
Humidity: 83%
Wind: 5 m/s

Daily air temperature for the month

Day Night

Tap a date to open detailed weather for that day

December	Day	Night	Sea t°	Wind	Precip	Humidity
1Tue	+11°C	+6°C	—	5-6 m/s, NNE	0.6 mm	79%
2Wed	+9°C	+6°C	—	3-4 m/s, NNW	0 mm	74%
3Thu	+7°C	+5°C	—	5-7 m/s, SW	4.1 mm	85%
4Fri	+6°C	+2°C	—	6-8 m/s, W	0.1 mm	77%
5Sat	+7°C	+2°C	—	6-7 m/s, SSW	2.3 mm	88%
6Sun	+7°C	+2°C	—	7-8 m/s, NNW	0.3 mm	81%
7Mon	+6°C	+3°C	—	3 m/s, SSE	0.1 mm	78%
8Tue	+8°C	+2°C	—	4 m/s, NNW	0 mm	77%
9Wed	+7°C	+4°C	—	4-5 m/s, WSW	0.3 mm	84%
10Thu	+10°C	+7°C	—	6-8 m/s, WNW	4.8 mm	90%
11Fri	+11°C	+6°C	—	6-7 m/s, W	2.3 mm	86%
12Sat	+8°C	+5°C	—	7-9 m/s, WNW	0.4 mm	78%
13Sun	+13°C	+5°C	—	7-9 m/s, SSW	0.8 mm	86%
14Mon	+11°C	+8°C	—	6-8 m/s, SSW	0.2 mm	84%
15Tue	+10°C	+7°C	—	5-6 m/s, SSW	0 mm	84%
16Wed	+11°C	+5°C	—	7-9 m/s, S	0.6 mm	87%
17Thu	+11°C	+5°C	—	5-7 m/s, SSW	0 mm	86%
18Fri	+12°C	+9°C	—	9-10 m/s, S	0 mm	85%
19Sat	+11°C	+6°C	—	7-10 m/s, SW	0.9 mm	83%
20Sun	+10°C	+7°C	—	5-6 m/s, SW	0 mm	81%
21Mon	+14°C	+9°C	—	9-10 m/s, SW	0.8 mm	89%
22Tue	+14°C	+12°C	—	7-9 m/s, SW	2.4 mm	88%
23Wed	+13°C	+7°C	—	10-12 m/s, SSW	0.9 mm	84%
24Thu	+8°C	+4°C	—	8-9 m/s, N	0.9 mm	81%
25Fri	+5°C	+2°C	—	5-6 m/s, N	0.1 mm	74%
26Sat	+8°C	+3°C	—	5-7 m/s, WSW	0 mm	80%
27Sun	+9°C	+3°C	—	10-14 m/s, W	2.9 mm	82%
28Mon	+6°C	+2°C	—	8-9 m/s, WNW	2.4 mm	80%
29Tue	+6°C	+2°C	—	5-6 m/s, WNW	0.1 mm	84%
30Wed	+6°C	+2°C	—	6-7 m/s, WNW	0.1 mm	82%
31Thu	+6°C	0°C	—	4-5 m/s, NNW	0.3 mm	80%

Weather highs and lows in Saint-Brieuc for december

Warmest day: 21 december, +14°C
Coldest night: 31 december, 0°C
Max precipitation: 10 december, 4.8 mm
Warmest water: —
Coldest water: —

Climate in Saint-Brieuc in december

Year: 2020
Average daytime temperature: +9°C
Average nighttime temperature: +5°C
Water temperature: —
Precipitation (month): 28.7 mm
Days with precipitation: 7
Humidity: 82%
Wind: 6 m/s

Weather in Saint-Brieuc in december by year

Year	Day	Night	Precipitation	Days with precipitation	Water
2025	+10°C	+6°C	9.8 mm	5	—
2024	+11°C	+7°C	9.8 mm	4	—
2023	+11°C	+7°C	12.2 mm	4	—
2022	+9°C	+4°C	21.9 mm	10	—
2021	+11°C	+6°C	7.7 mm	3	—
2020	+9°C	+5°C	28.7 mm	7	—

Comparison december in Saint-Brieuc with other months

Month	Day	Night	Days with precipitation	Sunny days
January	+9°C	+4°C	5	4
February	+10°C	+5°C	4	4
March	+11°C	+5°C	3	7
April	+13°C	+7°C	3	8
May	+16°C	+9°C	2	8
June	+20°C	+12°C	4	9
July	+22°C	+13°C	3	10
August	+23°C	+14°C	2	12
September	+20°C	+13°C	3	7
October	+17°C	+11°C	4	8
November	+13°C	+8°C	4	4
December	+10°C	+6°C	6	4