# Landivisiau

Landivisiau (French pronunciation:; Breton: Landivizio) is a commune in the Finistère department of Brittany in north-western France. The journalist Luc Le Vaillant, winner of the 1998 Albert Londres Prize was born in Landivisiau. Landivisiau is twinned with Bideford in north Devon.

## Geography
### Climate

Landivisiau has an oceanic climate (Köppen climate classification Cfb). The average annual temperature in Landivisiau is 11.3 °C (52.3 °F). The average annual rainfall is 1,165.1 mm (45.87 in) with December as the wettest month. The temperatures are highest on average in August, at around 16.8 °C (62.2 °F), and lowest in February, at around 6.5 °C (43.7 °F). The highest temperature ever recorded in Landivisiau was 39.5 °C (103.1 °F) on 18 July 2022; the coldest temperature ever recorded was −9.1 °C (15.6 °F) on 13 January 1987.
Climate data for Landivisiau (1991–2020 normals, extremes 1966–present) :
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 16.8 (62.2) | 21.3 (70.3) | 23.8 (74.8) | 27.0 (80.6) | 29.6 (85.3) | 33.0 (91.4) | 39.3 (102.7) | 35.3 (95.5) | 31.3 (88.3) | 28.3 (82.9) | 21.5 (70.7) | 19.0 (66.2) | 39.3 (102.7) |
| Mean daily maximum °C (°F) | 9.4 (48.9) | 9.8 (49.6) | 11.7 (53.1) | 13.7 (56.7) | 16.5 (61.7) | 18.9 (66.0) | 20.7 (69.3) | 20.9 (69.6) | 19.2 (66.6) | 15.9 (60.6) | 12.3 (54.1) | 10.0 (50.0) | 14.9 (58.9) |
| Daily mean °C (°F) | 6.9 (44.4) | 6.9 (44.4) | 8.4 (47.1) | 9.9 (49.8) | 12.6 (54.7) | 15.1 (59.2) | 16.9 (62.4) | 17.0 (62.6) | 15.3 (59.5) | 12.7 (54.9) | 9.6 (49.3) | 7.5 (45.5) | 11.6 (52.8) |
| Mean daily minimum °C (°F) | 4.4 (39.9) | 4.1 (39.4) | 5.1 (41.2) | 6.1 (43.0) | 8.7 (47.7) | 11.2 (52.2) | 13.0 (55.4) | 13.1 (55.6) | 11.5 (52.7) | 9.5 (49.1) | 6.9 (44.4) | 4.9 (40.8) | 8.2 (46.8) |
| Record low °C (°F) | −9.1 (15.6) | −6.9 (19.6) | −5.7 (21.7) | −1.8 (28.8) | −1.0 (30.2) | 3.0 (37.4) | 5.8 (42.4) | 6.3 (43.3) | 3.5 (38.3) | −2.5 (27.5) | −7.6 (18.3) | −8.3 (17.1) | −9.1 (15.6) |
| Average precipitation mm (inches) | 140.2 (5.52) | 115.8 (4.56) | 77.9 (3.07) | 84.6 (3.33) | 72.2 (2.84) | 63.0 (2.48) | 64.1 (2.52) | 65.7 (2.59) | 72.5 (2.85) | 118.0 (4.65) | 135.2 (5.32) | 151.2 (5.95) | 1,160.4 (45.68) |
| Average precipitation days (≥ 1 mm) | 17.4 | 15.1 | 13.3 | 12.7 | 10.2 | 9.2 | 10.6 | 10.1 | 10.6 | 15.1 | 17.3 | 18.1 | 159.7 |
| Mean monthly sunshine hours | 60.3 | 73.8 | 110.3 | 142.9 | 170.5 | 183.1 | 168.5 | 165.1 | 154.3 | 105.0 | 68.2 | 61.6 | 1,463.4 |
| Source: Météo France (sun 1991-2009) ||||||||||||||

## Landivisiau Naval Air Base

Landivisiau is home to the Landivisiau Naval Air Base [fr]. A squadron of 25× Air-Sol Moyenne Portée nuclear armed Rafale M from the French Navy is based at Landivisiau.

## International relations

It is twinned with Bideford in the southwest of the United Kingdom and Bad Sooden-Allendorf in Hesse, Germany.

## Population

Inhabitants of Landivisiau are called in French Landivisiens.
| Year | Pop. | ±% p.a. |
| 1793 | 2,360 | — |
| 1800 | 2,124 | −1.49% |
| 1806 | 2,690 | +4.02% |
| 1821 | 2,547 | −0.36% |
| 1831 | 2,853 | +1.14% |
| 1836 | 3,031 | +1.22% |
| 1841 | 3,217 | +1.20% |
| 1846 | 3,482 | +1.60% |
| 1851 | 3,420 | −0.36% |
| 1856 | 3,304 | −0.69% |
| 1861 | 3,317 | +0.08% |
| 1866 | 3,211 | −0.65% |
| Year | Pop. | ±% p.a. |
| 1872 | 3,203 | −0.04% |
| 1876 | 3,359 | +1.20% |
| 1881 | 3,706 | +1.99% |
| 1886 | 4,002 | +1.55% |
| 1891 | 4,079 | +0.38% |
| 1896 | 4,240 | +0.78% |
| 1901 | 4,354 | +0.53% |
| 1906 | 4,385 | +0.14% |
| 1911 | 4,713 | +1.45% |
| 1921 | 4,647 | −0.14% |
| 1926 | 4,544 | −0.45% |
| 1931 | 4,543 | −0.00% |
| Year | Pop. | ±% p.a. |
| 1936 | 4,518 | −0.11% |
| 1946 | 5,445 | +1.88% |
| 1954 | 4,926 | −1.24% |
| 1962 | 5,583 | +1.58% |
| 1968 | 6,174 | +1.69% |
| 1975 | 7,605 | +3.02% |
| 1982 | 7,964 | +0.66% |
| 1990 | 8,254 | +0.45% |
| 1999 | 8,751 | +0.65% |
| 2007 | 8,831 | +0.11% |
| 2012 | 9,131 | +0.67% |
| 2017 | 9,132 | +0.00% |
Source: EHESS and INSEE (1968-2017) :

## Breton language

In 2008, 7.11% of primary-school children attended bilingual schools, where Breton language is taught alongside French.