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

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.