Merdrignac (French pronunciation: [mɛʁdʁiɲak]; Breton: Medrigneg) is a commune in the Côtes-d'Armor department of Brittany in northwestern France. On 1 January 2025, the former commune of Saint-Launeuc was merged into Merdrignac.[3]
The River Meu forms most of the commune's northern border.
Merdrignac has an oceanic climate (Köppen climate classification Cfb). The average annual temperature in Merdrignac is 11.5 °C (52.7 °F). The average annual rainfall is 931.5 mm (36.67 in) with December as the wettest month. The temperatures are highest on average in July, at around 17.9 °C (64.2 °F), and lowest in December, at around 5.5 °C (41.9 °F). The highest temperature ever recorded in Merdrignac was 39.2 °C (102.6 °F) on 5 August 2003; the coldest temperature ever recorded was −8.3 °C (17.1 °F) on 12 January 2010.
| Climate data for Merdrignac (1981–2010 averages, extremes 1998−present) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 17.7 (63.9) |
22.0 (71.6) |
23.5 (74.3) |
27.2 (81.0) |
30.5 (86.9) |
34.4 (93.9) |
36.4 (97.5) |
39.2 (102.6) |
31.7 (89.1) |
29.0 (84.2) |
20.3 (68.5) |
16.2 (61.2) |
39.2 (102.6) |
| Mean daily maximum °C (°F) | 8.6 (47.5) |
9.5 (49.1) |
12.1 (53.8) |
15.0 (59.0) |
18.4 (65.1) |
22.0 (71.6) |
23.3 (73.9) |
23.1 (73.6) |
21.1 (70.0) |
16.5 (61.7) |
11.8 (53.2) |
8.4 (47.1) |
15.8 (60.4) |
| Daily mean °C (°F) | 5.6 (42.1) |
6.2 (43.2) |
8.1 (46.6) |
10.2 (50.4) |
13.5 (56.3) |
16.6 (61.9) |
17.9 (64.2) |
17.8 (64.0) |
15.7 (60.3) |
12.4 (54.3) |
8.4 (47.1) |
5.5 (41.9) |
11.5 (52.7) |
| Mean daily minimum °C (°F) | 2.7 (36.9) |
3.0 (37.4) |
4.0 (39.2) |
5.5 (41.9) |
8.6 (47.5) |
11.2 (52.2) |
12.6 (54.7) |
12.5 (54.5) |
10.4 (50.7) |
8.4 (47.1) |
5.1 (41.2) |
2.7 (36.9) |
7.2 (45.0) |
| Record low °C (°F) | −8.3 (17.1) |
−7.6 (18.3) |
−7.0 (19.4) |
−2.6 (27.3) |
−0.8 (30.6) |
3.0 (37.4) |
4.9 (40.8) |
5.5 (41.9) |
1.7 (35.1) |
−1.9 (28.6) |
−6.5 (20.3) |
−7.8 (18.0) |
−8.3 (17.1) |
| Average precipitation mm (inches) | 97.0 (3.82) |
73.9 (2.91) |
80.9 (3.19) |
64.9 (2.56) |
68.0 (2.68) |
40.0 (1.57) |
73.5 (2.89) |
56.8 (2.24) |
60.2 (2.37) |
104.6 (4.12) |
105.0 (4.13) |
106.7 (4.20) |
931.5 (36.67) |
| Average precipitation days (≥ 1.0 mm) | 15.0 | 12.6 | 12.8 | 11.3 | 11.1 | 6.8 | 9.8 | 7.9 | 8.1 | 13.6 | 14.5 | 14.9 | 138.5 |
| Source: Meteociel[4] | |||||||||||||
Inhabitants of Merdrignac are called merdrignaciens in French.
| Year | Pop. | ±% p.a. |
|---|---|---|
| 1968 | 2,576 | — |
| 1975 | 2,704 | +0.70% |
| 1982 | 2,780 | +0.40% |
| 1990 | 2,791 | +0.05% |
| 1999 | 2,830 | +0.15% |
| 2007 | 2,921 | +0.40% |
| 2012 | 2,895 | −0.18% |
| 2017 | 2,930 | +0.24% |
| Source: INSEE[5] | ||
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