Swiss Sun

Sunshine in Herisau

Herisau (AR) gets about 1670 hours of sunshine a year, 41% of the possible maximum, or 4.6 hours a day on average. That makes it sunnier than 52% of the places we cover in Switzerland and Liechtenstein, and number 12 of 20 places in Appenzell Ausserrhoden. Mountains around it block about 30 hours a year, already taken into account.

Explore Herisau on the sunshine map
1670 hsunshine a year
7.1 ha day in July
2.0 ha day in December
#12 / 20in Appenzell Ausserrhoden

Sunshine month by month

Average hours of sunshine per day, 1991–2020. The line shows the most the sun could shine here, with the mountains around it.

0h5h10h15hJanuary: 2.4 h a dayFebruary: 3.3 h a dayMarch: 4.5 h a dayApril: 5.5 h a dayMay: 5.8 h a dayJune: 6.6 h a dayJuly: 7.1 h a dayAugust: 6.7 h a daySeptember: 5.2 h a dayOctober: 3.5 h a dayNovember: 2.2 h a dayDecember: 2.0 h a dayJanFebMarAprMayJunJulAugSepOctNovDec

Direct sun at the centre on a clear day, with the mountains around it: on 21 December from 09:05 to 16:09, and on 21 June from 05:52 to 20:57.

Monthper dayper month
January2.4 h75 h
February3.3 h91 h
March4.5 h140 h
April5.5 h166 h
May5.8 h179 h
June6.6 h198 h
July7.1 h222 h
August6.7 h208 h
September5.2 h155 h
October3.5 h109 h
November2.2 h66 h
December2.0 h61 h

Climate in Herisau

8.6 °Cmean temperature
21.9 °CJuly daily high
−2.5 °CJanuary nightly low
1446 mmrain and snow a year
1207 kWh/m²solar radiation a year
774 mabove sea level

All 20 places in Appenzell Ausserrhoden ranked by sunshine · Sunniest towns in Switzerland · Look up any address in Herisau