Strasbourg

Here's the thing about Strasbourg that surprises most people: this Alsatian gem gets about 8.3 hours of daily sunshine on average, which sounds decent until you realize it's spread thin across a year that pulls in 897mm of rain. That's more wet days than you'd expect for a place this far south in France. The sweet spot? May through August — when the rain backs off, temperatures climb to a genuinely pleasant 20–25°C (68–77°F), and the city's half-timbered old town actually feels like the postcard you imagined. These four months matter for Strasbourg specifically because they're when the Rhine valley warms up enough that you can actually linger at a café without your fingers going numb, and the Christmas market crowds haven't arrived yet.

Each month has its own personality. May is the underrated sweet spot — locals call it "shoulder season light," with temperatures around 18–22°C (64–72°F), manageable crowds, and the city's parks finally green. June pushes toward summer proper, hitting 21–25°C (70–77°F) with long, lazy evenings stretching past 10pm; the tourist surge starts but restaurants still have tables. July and August are the warmest stretch — expect highs around 24–26°C (75–79°F) — but this is also peak season, when the Grande Île fills with tour groups and hotel prices jump 30–40%. August especially can feel crowded, though it's when locals abandon the city, so if you time it right, you can catch quieter mornings.

Avoid November through March if you hate grey skies and cold drizzle. Temperatures drop to 3–7°C (37–45°F), and the city gets that damp chill that seeps into your bones. December is an exception — the Christmas markets are magical — but even then, expect wet cobblestones and the need for serious layers. The other winter months? Just grey, wet, and a bit depressing unless you're into moody European atmosphere.

Looking at the bigger picture for 2026: Strasbourg's climate is following the broader European trend of longer, warmer springs bleeding into earlier, hotter summers. If historical patterns hold, 2026 should see May arrive genuinely warm (maybe even warm-ish for a place this northern), and summer should be reliably dry compared to the past decade. That said, rain remains Strasbourg's constant companion — pack a good jacket regardless of when you go.