A waterfall falling from a cliff into the green Lauterbrunnen valley in the Bernese Oberland
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Switzerland by campervan: weather and best time

When to tour Switzerland by campervan: temperatures, rainfall and the best season for each part of the country. What to know before you go.

Published 18 September 2026Last checked 18 September 2026

Weather

Weather

June to September is the reliable window, and how high you sleep matters more than which month it is. Switzerland packs a two kilometre vertical range into a small country. Lugano in Ticino sits at 273 metres and Samedan in the Engadin at 1,709, and their Julys are eight degrees apart. The same week can be shirt weather on the lake and frost at the top of the road above it.

Hairpin bends of a pass road stacked above one another, seen from directly overhead
Hairpins stacked one above the next. Check the pass is open before you commit to it

The year by region: how it feels, how warm, how wet

ValaisSion
5°52 mm
8°40 mm
14°37 mm
18°34 mm
22°52 mm
25°48 mm
27°62 mm
27°60 mm
22°38 mm
17°43 mm
10°50 mm
5°68 mm
Bernese OberlandInterlaken
3°72 mm
5°67 mm
11°73 mm
15°83 mm
19°122 mm
22°127 mm
24°146 mm
24°146 mm
19°94 mm
14°80 mm
8°80 mm
4°91 mm
Graubünden and the EngadinSamedan
-1°29 mm
1°19 mm
4°24 mm
8°37 mm
13°67 mm
17°91 mm
19°87 mm
19°100 mm
15°73 mm
11°77 mm
4°70 mm
-1°37 mm
TicinoLugano
7°66 mm
9°61 mm
14°76 mm
17°138 mm
21°178 mm
25°172 mm
27°158 mm
27°158 mm
22°165 mm
17°150 mm
12°167 mm
8°80 mm
Lake GenevaGeneva
5°73 mm
7°56 mm
12°62 mm
16°67 mm
20°79 mm
24°83 mm
27°79 mm
26°81 mm
21°91 mm
16°97 mm
9°89 mm
6°90 mm
Central SwitzerlandLucerne
4°56 mm
6°61 mm
11°75 mm
15°97 mm
19°149 mm
23°165 mm
25°166 mm
24°170 mm
20°109 mm
14°88 mm
8°78 mm
5°78 mm

BestWorkableToo hotCold or wetTop figure: average daily high. Below it: average rainfall for the month.

The strip shows the two extremes clearly. Sion is the driest row and Lugano the wettest, by close to three times over the year, and Lugano's wet months are spring and autumn rather than summer. The bands are our judgement about the region as a whole. The numbers are the published normals for the station named beside each row, which is why a mild coastal reading can sit next to a cold mountain band.