Wauwil is a municipality in the district of Willisau in the canton of Lucerne in Switzerland.

Of the settled areas, 10.85% is covered with buildings, 2.37% is industrial, 0.34% is classed as special developments, 0.68% is parks or greenbelts and 3.73% is transportation infrastructure.

[4] The prehistoric lakeside settlement Wauwilermoos is listed as a Swiss heritage site of national significance.

[8][9][10] Re-established in 1947 as a penitentiary, it was rebuilt in the early 1980s as a semi-open institution where custodial sentences are carried out.

The age distribution, as of 2008[update], in Wauwil is; 409 people or 24.2% of the population is 0–19 years old.

In the 2000 census[update] the religious membership of Wauwil was; 1,135 (67.9%) were Roman Catholic, and 100 (6.%) were Protestant, with an additional 166 (9.93%) that were of some other Christian faith.

The wettest month is June during which time Wauwil receives an average of 115 mm (4.5 in) of precipitation.

The driest month of the year is October with an average of 66 mm (2.6 in) of precipitation over 12.4 days.