Weather & seasons.
Dubrovnik has a long warm season, a short sharp winter, and two winds that decide whether boats sail.
Short answer
July and August regularly exceed 35 °C with no shade on the walls — plan indoor stops for midday. The sea is 24–26 °C from late June to September. Mid-May and mid-September are the sweet spot: warm sea, long days, half the crowds.
Season by season
June – August
Hot and dry, 30–36 °C. Peak crowds, peak prices, best swimming. Walk the walls at opening.
May and September
The sweet spot — warm sea, comfortable walking weather, noticeably fewer people.
April and October
Green, mild, occasional rain. Excellent for hiking, day trips and photography.
November – March
Quiet and often rainy, but Dubrovnik is at its most local. Some boats and attractions run reduced hours.
The two winds
Bura
A cold, dry north-easterly, strongest in winter and early spring. Brings brilliant clear skies — and cancels ferries and cable car service.
Jugo
A warm, humid south-easterly with rain and swell. Sea days become uncomfortable; museums become a good idea.
Heat safety
There is no shade on the City Walls and very little on Stradun's stone. Midday in August is genuinely punishing.
Refill water bottles at the public fountains — Onofrio's Large Fountain by Pile is drinkable.
Plan the museums, the Rector's Palace or a long lunch for 12:00–16:00, and save the sights for early and late.
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