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 Arni (45.2%) and Islisberg (45.2%). Source: MeteoSwiss, nearest station.

Ranking

MeteoSchweiz · 2025

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