Rostrenen

Rostrenen
Rostrenenn
The church of Notre-Dame du Roncier in Rostrenen
The church of Notre-Dame du Roncier in Rostrenen
Flag of Rostrenen
Coat of arms of Rostrenen
Location of Rostrenen
Rostrenen is located in France
Rostrenen
Rostrenen
Rostrenen is located in Brittany
Rostrenen
Rostrenen
Coordinates: 48°14′14″N 3°18′56″W / 48.2372°N 3.3155°W / 48.2372; -3.3155
CountryFrance
RegionBrittany
DepartmentCôtes-d'Armor
ArrondissementGuingamp
CantonRostrenen
IntercommunalityKreiz-Breizh
Government
 • Mayor (2020–2026) Guillaume Robic[1]
Area
1
32.17 km2 (12.42 sq mi)
Population
 (2022)[2]
3,282
 • Density100/km2 (260/sq mi)
Time zoneUTC+01:00 (CET)
 • Summer (DST)UTC+02:00 (CEST)
INSEE/Postal code
22266 /22110
Elevation152–262 m (499–860 ft)
1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.

Rostrenen (French pronunciation: [ʁɔstʁənɛ̃]; Breton: Rostrenenn) is a commune in the French department of Côtes-d'Armor, in Brittany.

Geography

Neighbouring communes

Rostrenen is border by Mellionnec to the south, Plouguernevel to the east, Kergrist-Moëlou to the north, and Glomel to the west.

Climate

Rostrenen has an oceanic climate (Köppen climate classification Cfb). The average annual temperature in Rostrenen is 11.1 °C (52.0 °F). The average annual rainfall is 1,146.6 mm (45.14 in) with December as the wettest month. The temperatures are highest on average in August, at around 17.3 °C (63.1 °F), and lowest in January, at around 5.6 °C (42.1 °F). The highest temperature ever recorded in Rostrenen was 39.3 °C (102.7 °F) on 18 July 2022; the coldest temperature ever recorded was −13.9 °C (7.0 °F) on 20 January 1963.

Climate data for Rostrenen (1991–2020 averages, extremes 1954−present)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 15.8
(60.4)
21.3
(70.3)
24.1
(75.4)
27.2
(81.0)
28.5
(83.3)
35.7
(96.3)
39.3
(102.7)
37.9
(100.2)
32.3
(90.1)
28.8
(83.8)
19.2
(66.6)
16.0
(60.8)
39.3
(102.7)
Mean daily maximum °C (°F) 8.0
(46.4)
8.8
(47.8)
11.3
(52.3)
13.9
(57.0)
16.9
(62.4)
19.8
(67.6)
21.7
(71.1)
21.9
(71.4)
19.4
(66.9)
15.2
(59.4)
11.2
(52.2)
8.6
(47.5)
14.7
(58.5)
Daily mean °C (°F) 5.6
(42.1)
5.8
(42.4)
7.8
(46.0)
9.7
(49.5)
12.6
(54.7)
15.3
(59.5)
17.1
(62.8)
17.3
(63.1)
15.2
(59.4)
12.0
(53.6)
8.5
(47.3)
6.1
(43.0)
11.1
(52.0)
Mean daily minimum °C (°F) 3.1
(37.6)
2.9
(37.2)
4.2
(39.6)
5.5
(41.9)
8.2
(46.8)
10.7
(51.3)
12.5
(54.5)
12.7
(54.9)
10.9
(51.6)
8.7
(47.7)
5.8
(42.4)
3.7
(38.7)
7.4
(45.3)
Record low °C (°F) −13.9
(7.0)
−12.0
(10.4)
−7.9
(17.8)
−3.2
(26.2)
−0.2
(31.6)
2.9
(37.2)
5.9
(42.6)
5.6
(42.1)
3.0
(37.4)
−1.9
(28.6)
−5.2
(22.6)
−9.6
(14.7)
−13.9
(7.0)
Average precipitation mm (inches) 135.4
(5.33)
109.4
(4.31)
82.8
(3.26)
81.2
(3.20)
76.4
(3.01)
57.0
(2.24)
66.7
(2.63)
67.7
(2.67)
75.7
(2.98)
120.3
(4.74)
127.9
(5.04)
146.1
(5.75)
1,146.6
(45.14)
Average precipitation days (≥ 1.0 mm) 16.3 14.2 12.8 12.2 10.4 9.0 10.0 10.1 10.3 14.9 16.4 17.4 154.1
Source: Meteociel[3]

Population

In French the inhabitants of Rostrenen are known as Rostrenois.

Historical population
YearPop.±% p.a.
1968 3,658—    
1975 3,875+0.83%
1982 3,868−0.03%
1990 3,664−0.67%
1999 3,616−0.15%
2007 3,392−0.80%
2012 3,256−0.82%
2017 3,060−1.23%
Source: INSEE[4]

Map

Topographic map

Breton language

On 13 September 2004 the municipality launched a linguistic plan as part of the Ya d'ar brezhoneg (Yes to Breton) campaign. In 2008, 34.5% of primary children attended bilingual schools.[5]

The former railway station (1898–1967)

See also

References

  1. ^ "Répertoire national des élus: les maires" (in French). data.gouv.fr, Plateforme ouverte des données publiques françaises. 13 September 2022.
  2. ^ "Populations de référence 2022" (in French). The National Institute of Statistics and Economic Studies. 19 December 2024.
  3. ^ "Normals and records for Rostrenen (22)" (in French). Météo-France. Retrieved 20 August 2025.
  4. ^ Population en historique depuis 1968, INSEE
  5. ^ (in French) Ofis ar Brezhoneg: Enseignement bilingue