Which municipality in canton Aargau is the sunniest?

Kaiseraugst is the sunniest municipality in canton Aargau, at 46.1% relative sunshine (2025).

What does relative sunshine duration mean?

The share of actual sunshine hours against the maximum possible. It makes places with short winter days fairly comparable with very sunny locations.

← Canton Aargau overview

Ranking · Data 2025 · Source: BFS

The sunniest municipalities in canton Aargau (2025)

National ranking →

Kaiseraugst is the sunniest municipality in canton Aargau: 46.1% of possible sunshine duration (2025). Next come Islisberg (45.2%) and Arni (45.2%). Source: MeteoSwiss, nearest station.

Ranking

MeteoSchweiz · 2025

Rank	Municipality	Sunshine	Residents
1	Kaiseraugst	46.1%	5'544
2	Islisberg	45.2%	690
3	Arni	45.2%	1'898
4	Döttingen	44.5%	4'473
5	Mellikon	44.5%	237
6	Tegerfelden	44.5%	1'290
7	Böttstein	44.5%	4'305
8	Zurzach	44.5%	8'237
9	Endingen	44.5%	2'703
10	Gipf-Oberfrick	44.4%	3'878
11	Wegenstetten	44.4%	1'023
12	Wittnau	44.4%	1'411
13	Laufenburg	44.3%	3'800
14	Full-Reuenthal	44.3%	994
15	Klingnau	44.3%	3'673
16	Leuggern	44.3%	2'404
17	Leibstadt	44.3%	1'596
18	Koblenz AG	44.3%	1'759
19	Gansingen	44.3%	1'097
20	Mettauertal	44.3%	2'158
21	Schwaderloch	44.3%	723
22	Kaisten	44.3%	2'948
23	Mellingen	44.2%	6'170
24	Rudolfstetten-Friedlisberg	44.2%	4'599
25	Ehrendingen	44.2%	4'906
26	Tägerig	44.2%	1'544
27	Fislisbach	44.2%	6'090
28	Neuenhof	44.2%	9'087
29	Remetschwil	44.2%	2'113
30	Widen	44.2%	3'876
31	Fisibach	44.2%	590
32	Wettingen	44.2%	21'479
33	Eggenwil	44.2%	1'031
34	Niederwil	44.2%	3'042
35	Künten	44.2%	1'917
36	Hägglingen	44.2%	2'529
37	Freienwil	44.2%	1'116
38	Zufikon	44.2%	4'917
39	Schneisingen	44.2%	1'562
40	Fischbach-Göslikon	44.2%	1'706
41	Ennetbaden	44.2%	3'672
42	Bellikon	44.2%	1'592
43	Lengnau	44.2%	2'929
44	Niederrohrdorf	44.2%	4'648
45	Würenlos	44.2%	6'830
46	Killwangen	44.2%	2'242
47	Stetten	44.2%	2'496
48	Siglistorf	44.2%	721
49	Spreitenbach	44.2%	12'512
50	Bergdietikon	44.2%	2'946
51	Oberrohrdorf	44.2%	4'255
52	Berikon	43.5%	4'934
53	Oberwil-Lieli	43.5%	2'605
54	Untersiggenthal	43.3%	7'615
55	Hausen	43.3%	3'796
56	Mönthal	43.3%	405
57	Villigen	43.3%	2'139
58	Birrhard	43.3%	921
59	Remigen	43.3%	1'385
60	Habsburg	43.3%	435
61	Obersiggenthal	43.3%	8'881
62	Bözberg	43.3%	1'670
63	Lupfig	43.3%	3'359
64	Rüfenach	43.3%	874
65	Böztal	43.3%	2'896
66	Birr	43.3%	4'718
67	Birmenstorf	43.3%	3'040
68	Wohlenschwil	43.3%	1'867
69	Windisch	43.3%	8'060
70	Baden	43.3%	23'587
71	Würenlingen	43.3%	5'120
72	Mülligen	43.3%	1'078
73	Brugg	43.3%	13'288
74	Gebenstorf	43.3%	5'761
75	Mandach	43.3%	346
76	Riniken	43.3%	1'555
77	Villmergen	43.2%	8'132
78	Leimbach	43.2%	533
79	Rottenschwil	43.2%	946
80	Beinwil (Freiamt)	43.2%	1'279
81	Boswil	43.2%	3'124
82	Vordemwald	43.2%	2'013
83	Gontenschwil	43.2%	2'182
84	Reinach	43.2%	9'499
85	Geltwil	43.2%	232
86	Merenschwand	43.2%	3'794
87	Seengen	43.2%	4'411
88	Bünzen	43.2%	1'233
89	Muri	43.2%	8'602
90	Brittnau	43.2%	4'257
91	Murgenthal	43.2%	3'101
92	Büttikon	43.2%	1'144
93	Besenbüren	43.2%	639
94	Bettwil	43.2%	695
95	Uezwil	43.2%	549
96	Kallern	43.2%	407
97	Aristau	43.2%	1'646
98	Unterlunkhofen	43.2%	1'629
99	Wohlen	43.2%	17'481
100	Menziken	43.2%	8'400
101	Schmiedrued	43.2%	1'152
102	Oberlunkhofen	43.2%	2'193
103	Boniswil	43.2%	1'751
104	Leutwil	43.2%	752
105	Zetzwil	43.2%	1'394
106	Bremgarten	43.2%	8'834
107	Beinwil am See	43.2%	3'601
108	Birrwil	43.2%	1'389
109	Fahrwangen	43.2%	2'497
110	Meisterschwanden	43.2%	3'267
111	Jonen	43.2%	2'351
112	Sarmenstorf	43.2%	3'118
113	Buttwil	43.2%	1'276
114	Waltenschwil	43.2%	3'159
115	Aarau	42.6%	22'290
116	Muhen	42.6%	4'112
117	Suhr	42.6%	11'340
118	Egliswil	42.6%	1'544
119	Holderbank	42.6%	1'489
120	Thalheim	42.6%	931
121	Staufen	42.6%	4'306
122	Dintikon	42.6%	2'432
123	Biberstein	42.6%	1'644
124	Gränichen	42.6%	8'625
125	Mägenwil	42.6%	2'215
126	Dottikon	42.6%	4'160
127	Oberkulm	42.6%	2'999
128	Lenzburg	42.6%	11'184
129	Hirschthal	42.6%	1'756
130	Wölflinswil	42.6%	1'041
131	Hendschiken	42.6%	1'351
132	Othmarsingen	42.6%	3'155
133	Brunegg	42.6%	907
134	Oberentfelden	42.6%	8'907
135	Schinznach	42.6%	2'430
136	Niederlenz	42.6%	4'896
137	Densbüren	42.6%	771
138	Teufenthal	42.6%	1'748
139	Zeihen	42.6%	1'276
140	Schafisheim	42.6%	3'137
141	Küttigen	42.6%	6'857
142	Herznach-Ueken	42.6%	2'634
143	Hallwil	42.6%	1'021
144	Dürrenäsch	42.6%	1'373
145	Unterkulm	42.6%	3'600
146	Auenstein	42.6%	1'728
147	Hunzenschwil	42.6%	4'415
148	Oberhof	42.6%	580
149	Möriken-Wildegg	42.6%	4'888
150	Seon	42.6%	5'571
151	Buchs	42.6%	8'429
152	Unterentfelden	42.6%	4'579
153	Veltheim	42.6%	1'563
154	Ammerswil	42.6%	795
155	Rupperswil	42.6%	6'041
156	Schlossrued	42.6%	873
157	Zofingen	41.8%	12'796
158	Kölliken	41.8%	5'035
159	Safenwil	41.8%	4'564
160	Aarburg	41.8%	8'891
161	Bottenwil	41.8%	868
162	Uerkheim	41.8%	1'433
163	Schöftland	41.8%	4'555
164	Oftringen	41.8%	15'080
165	Kirchleerau	41.8%	935
166	Holziken	41.8%	1'742
167	Rothrist	41.8%	9'866
168	Strengelbach	41.8%	5'104
169	Staffelbach	41.8%	1'344
170	Erlinsbach	41.8%	4'563
171	Obermumpf	41.3%	1'072
172	Sisseln	41.3%	1'666
173	Mumpf	41.3%	1'549
174	Frick	41.3%	5'741
175	Schupfart	41.3%	883
176	Eiken	41.3%	2'447
177	Zuzgen	41.3%	897
178	Münchwilen	41.3%	1'070
179	Oeschgen	41.3%	1'176
180	Olsberg	41.3%	367
181	Zeiningen	41.3%	2'547
182	Hellikon	41.3%	839
183	Stein	41.3%	3'504
184	Wallbach	41.3%	2'081
185	Rheinfelden	41.3%	13'854
186	Magden	41.3%	3'899
187	Möhlin	41.3%	11'349
188	Oberrüti	39%	1'600
189	Auw	39%	2'290
190	Abtwil	39%	1'063
191	Dietwil	39%	1'445
192	Sins	39%	4'468
193	Mühlau	39%	1'336

How we measure this

MeteoSchweiz

Relative sunshine duration (actual as a share of astronomically possible sunshine) from the nearest MeteoSwiss station, at most 25 km away, averaged up to 2025. The relative figure is topography-fair because it accounts for shorter winter days.

Frequently asked questions

Which municipality in canton Aargau is the sunniest?: Kaiseraugst is the sunniest municipality in canton Aargau, at 46.1% relative sunshine (2025).
What does relative sunshine duration mean?: The share of actual sunshine hours against the maximum possible. It makes places with short winter days fairly comparable with very sunny locations.