# Île de Batz

The Île de Batz (French pronunciation:; Breton: Enez-Vaz) is an island off Roscoff in Brittany, France. Administratively, it is a commune in the Finistère department of Brittany in north-western France.

## Climate

Île de Batz has an oceanic climate (Köppen climate classification Cfb). The average annual temperature in Île de Batz is 12.0 °C (53.6 °F). The average annual rainfall is 894.4 mm (35.21 in) with December as the wettest month. The temperatures are highest on average in August, at around 17.0 °C (62.6 °F), and lowest in February, at around 7.7 °C (45.9 °F). The highest temperature ever recorded in Île de Batz was 35.0 °C (95.0 °F) on 18 August 1932; the coldest temperature ever recorded was −10.0 °C (14.0 °F) on 14 February 1929 and 18 December 1927.
Comparison of local Meteorological data with other cities in France :
| Town | Sunshine (hours/yr) | Rain (mm/yr) | Snow (days/yr) | Storm (days/yr) | Fog (days/yr) |
| National average | 1,973 | 770 | 14 | 22 | 40 |
| Île de Batz | 1,735.2 | 872.3 | 4.0 | 5.2 | 26.6 |
| Paris | 1,661 | 637 | 12 | 18 | 10 |
| Nice | 2,724 | 767 | 1 | 29 | 1 |
| Strasbourg | 1,693 | 665 | 29 | 29 | 56 |
| Brest | 1,605 | 1,211 | 7 | 12 | 75 |
Climate data for Île de Batz (1981–2010 averages, extremes 1917−present) :
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 17.7 (63.9) | 19.8 (67.6) | 24.3 (75.7) | 26.8 (80.2) | 29.5 (85.1) | 31.9 (89.4) | 34.0 (93.2) | 35.0 (95.0) | 31.6 (88.9) | 30.2 (86.4) | 19.6 (67.3) | 18.8 (65.8) | 35.0 (95.0) |
| Mean daily maximum °C (°F) | 9.9 (49.8) | 9.9 (49.8) | 11.4 (52.5) | 12.6 (54.7) | 14.9 (58.8) | 17.4 (63.3) | 19.3 (66.7) | 19.7 (67.5) | 18.4 (65.1) | 15.9 (60.6) | 12.8 (55.0) | 10.7 (51.3) | 14.4 (57.9) |
| Daily mean °C (°F) | 7.9 (46.2) | 7.7 (45.9) | 9.0 (48.2) | 10.0 (50.0) | 12.4 (54.3) | 14.7 (58.5) | 16.6 (61.9) | 17.0 (62.6) | 15.8 (60.4) | 13.5 (56.3) | 10.6 (51.1) | 8.6 (47.5) | 12.0 (53.6) |
| Mean daily minimum °C (°F) | 5.8 (42.4) | 5.5 (41.9) | 6.7 (44.1) | 7.5 (45.5) | 9.8 (49.6) | 12.1 (53.8) | 13.9 (57.0) | 14.2 (57.6) | 13.1 (55.6) | 11.1 (52.0) | 8.4 (47.1) | 6.4 (43.5) | 9.6 (49.3) |
| Record low °C (°F) | −9.2 (15.4) | −10.0 (14.0) | −4.2 (24.4) | −1.0 (30.2) | 0.8 (33.4) | 4.0 (39.2) | 6.0 (42.8) | 6.4 (43.5) | 4.4 (39.9) | 1.0 (33.8) | −4.4 (24.1) | −10.0 (14.0) | −10.0 (14.0) |
| Average precipitation mm (inches) | 101.7 (4.00) | 81.9 (3.22) | 71.2 (2.80) | 65.7 (2.59) | 61.3 (2.41) | 48.5 (1.91) | 45.5 (1.79) | 48.2 (1.90) | 54.5 (2.15) | 97.0 (3.82) | 102.5 (4.04) | 116.4 (4.58) | 894.4 (35.21) |
| Average precipitation days (≥ 1.0 mm) | 16.1 | 12.6 | 12.8 | 11.9 | 10.3 | 8.3 | 8.3 | 8.5 | 8.9 | 13.9 | 15.8 | 17.0 | 144.3 |
| Average relative humidity (%) | 83 | 82 | 82 | 82 | 84 | 84 | 85 | 85 | 85 | 84 | 82 | 83 | 83.4 |
| Mean monthly sunshine hours | 59.1 | 85.0 | 127.3 | 172.5 | 215.8 | 210.7 | 234.3 | 211.5 | 167.6 | 121.2 | 75.1 | 55.1 | 1,735.2 |
| Source: Meteociel, Infoclimat.fr (humidity and sunshine 1961-1990) ||||||||||||||

## Population

Inhabitants of Île-de-Batz are called in French Batziens or Îliens.
At the census of 1999 the island had a population of 575, and in 2005 it had an estimated population of 594.

## Sights

* Jardin Georges Delaselle
* Lighthouse