Which municipality in canton Solothurn is the warmest?

Bättwil is the warmest municipality in canton Solothurn, at 10.7 °C annual mean (1991–2020).

Where does the temperature data come from?

From the MeteoSwiss 1 km climate-normals grid ({year}), sampled at the main settlement. This is deliberately not the territorial average, which for Alpine municipalities is far colder because it takes in the high, glaciated terrain — Zermatt's village reads about 3.7 °C, its whole area about −3 °C.

← Canton Solothurn overview

Ranking · Data 1991–2020 · Source: BFS

The warmest municipalities in canton Solothurn (1991–2020)

National ranking →

Bättwil is the warmest municipality in canton Solothurn: 10.7 °C annual mean (1991–2020 normals). Next come Dornach (10.7 °C) and Witterswil (10.7 °C). Source: MeteoSwiss 1 km climate-normals grid.

Ranking

MeteoSchweiz · 1991–2020

Rank	Municipality	Avg. temp.	Residents
1	Bättwil	10.7 °C	1'185
2	Dornach	10.7 °C	6'898
3	Witterswil	10.7 °C	1'475
4	Nuglar-St. Pantaleon	10.2 °C	1'580
5	Büsserach	10.2 °C	2'473
6	Rodersdorf	10.1 °C	1'398
7	Büren	10 °C	1'060
8	Hofstetten-Flüh	10 °C	3'410
9	Däniken	10 °C	3'108
10	Eppenberg-Wöschnau	10 °C	336
11	Gretzenbach	10 °C	2'825
12	Schönenwerd	10 °C	5'437
13	Obergösgen	9.9 °C	2'553
14	Winznau	9.8 °C	2'061
15	Selzach	9.8 °C	3'750
16	Wolfwil	9.7 °C	2'473
17	Metzerlen-Mariastein	9.7 °C	970
18	Kienberg	9.7 °C	526
19	Deitingen	9.7 °C	2'409
20	Zuchwil	9.7 °C	9'622
21	Bellach	9.7 °C	5'632
22	Solothurn	9.7 °C	16'830
23	Breitenbach	9.7 °C	4'440
24	Härkingen	9.6 °C	1'763
25	Neuendorf	9.6 °C	2'412
26	Niederbuchsiten	9.6 °C	1'369
27	Lüsslingen-Nennigkofen	9.6 °C	1'131
28	Niedergösgen	9.6 °C	4'297
29	Derendingen	9.6 °C	7'219
30	Luterbach	9.6 °C	3'756
31	Bettlach	9.6 °C	4'935
32	Feldbrunnen-St. Niklaus	9.6 °C	1'068
33	Flumenthal	9.6 °C	1'023
34	Fulenbach	9.6 °C	1'841
35	Gunzgen	9.6 °C	1'783
36	Rickenbach	9.6 °C	1'208
37	Kestenholz	9.5 °C	1'888
38	Messen	9.5 °C	1'506
39	Unterramsern	9.5 °C	230
40	Trimbach	9.5 °C	6'928
41	Gerlafingen	9.5 °C	5'859
42	Kriegstetten	9.5 °C	1'456
43	Obergerlafingen	9.5 °C	1'232
44	Recherswil	9.5 °C	2'260
45	Subingen	9.5 °C	3'311
46	Grenchen	9.5 °C	18'973
47	Olten	9.5 °C	19'265
48	Schnottwil	9.4 °C	1'159
49	Erlinsbach	9.4 °C	3'761
50	Biberist	9.4 °C	9'531
51	Etziken	9.4 °C	1'093
52	Horriwil	9.4 °C	940
53	Kappel	9.4 °C	3'591
54	Fehren	9.4 °C	619
55	Kleinlützel	9.4 °C	1'190
56	Lüterkofen-Ichertswil	9.3 °C	923
57	Hochwald	9.3 °C	1'278
58	Aeschi	9.3 °C	1'342
59	Bolken	9.3 °C	579
60	Drei Höfe	9.3 °C	727
61	Hubersdorf	9.3 °C	727
62	Langendorf	9.3 °C	3'983
63	Dulliken	9.3 °C	5'489
64	Wangen bei Olten	9.3 °C	5'598
65	Bärschwil	9.3 °C	806
66	Erschwil	9.3 °C	996
67	Egerkingen	9.2 °C	4'365
68	Lohn-Ammannsegg	9.2 °C	2'940
69	Rüttenen	9.2 °C	1'498
70	Boningen	9.2 °C	816
71	Grindel	9.2 °C	508
72	Zullwil	9.2 °C	704
73	Biezwil	9.1 °C	345
74	Seewen	9.1 °C	1'088
75	Lommiswil	9.1 °C	1'615
76	Walterswil	9.1 °C	768
77	Nunningen	9.1 °C	1'948
78	Oberbuchsiten	9 °C	2'382
79	Oensingen	9 °C	6'766
80	Balsthal	9 °C	6'622
81	Hauenstein-Ifenthal	9 °C	348
82	Lostorf	9 °C	4'113
83	Stüsslingen	9 °C	1'265
84	Kammersrohr	9 °C	32
85	Riedholz	9 °C	2'319
86	Buchegg	8.9 °C	2'979
87	Gempen	8.9 °C	919
88	Matzendorf	8.8 °C	1'439
89	Oberdorf	8.8 °C	1'806
90	Himmelried	8.8 °C	974
91	Laupersdorf	8.7 °C	1'916
92	Wisen	8.7 °C	451
93	Günsberg	8.6 °C	1'169
94	Meltingen	8.6 °C	623
95	Hägendorf	8.5 °C	5'343
96	Holderbank	8.3 °C	779
97	Welschenrohr-Gänsbrunnen	8.3 °C	1'199
98	Beinwil	8 °C	248
99	Herbetswil	7.7 °C	617
100	Mümliswil-Ramiswil	7.6 °C	2'472
101	Balm bei Günsberg	7.4 °C	213
102	Aedermannsdorf	7 °C	607

1991–2020 · MeteoSwiss, retrieved 28.08.2026

How we measure this

MeteoSchweiz

Mean annual air temperature from the MeteoSwiss 1 km gridded climate normals — a spatial analysis of the 1991–2020 normals period — read at the municipality's main settlement rather than interpolated from distant stations. The figure describes the inhabited valley floor, not the surrounding peaks.

Frequently asked questions

Which municipality in canton Solothurn is the warmest?: Bättwil is the warmest municipality in canton Solothurn, at 10.7 °C annual mean (1991–2020).
Where does the temperature data come from?: From the MeteoSwiss 1 km climate-normals grid ({year}), sampled at the main settlement. This is deliberately not the territorial average, which for Alpine municipalities is far colder because it takes in the high, glaciated terrain — Zermatt's village reads about 3.7 °C, its whole area about −3 °C.