A month-by-month climate guide to Kotor — the best time to visit is July, June, August, when highs reach around 31°C.
Now
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Best time
July, June, August
Warmest
July · 31°C
Swimming season
Jun, Jul, Aug, Sep
Driest
July · 3 rainy days
Kotor sits at the head of the Boka bay, wrapped by steep mountains that trap heat and moisture. Summers are warm and Mediterranean rather than scorching, with July highs around 31°C and the sea climbing to a swimmable 25°C, peaking at 26°C in August. Sunshine is generous, close to 14 hours a day at midsummer.
The same sheltering mountains make the bay the rainiest stretch of the Montenegrin coast in winter, when November brings around 15 wet days. Winters stay mild, though, with January highs near 12°C, so the walled old town rarely feels truly cold.
| Month | High | Low | Sea | Sun/day | Rainy days |
|---|---|---|---|---|---|
| January | 12° | 6° | 14° | 6.4 h | 14 |
| February | 13° | 7° | 13° | 7.9 h | 9 |
| March | 14° | 8° | 14° | 9.1 h | 12 |
| April | 17° | 10° | 16° | 10.1 h | 12 |
| May | 22° | 16° | 19° | 11.6 h | 13 |
| June★ | 27° | 21° | 23° | 13.1 h | 6 |
| July★ | 31° | 24° | 25° | 13.8 h | 3 |
| August★ | 30° | 23° | 26° | 12.8 h | 7 |
| September | 25° | 19° | 24° | 10.4 h | 10 |
| October | 22° | 16° | 21° | 9.1 h | 9 |
| November | 17° | 12° | 18° | 6 h | 15 |
| December | 14° | 8° | 15° | 5.6 h | 14 |
Averages based on 2021–2024 data (open-meteo). Sea temperatures are typical Adriatic values along the Montenegrin coast.
For beach days and swimming, come between June and September, when the sea holds 23–26°C and the sun shines for 12–14 hours. July and August are warmest but busiest; June and September are just as pleasant with thinner crowds. May and October suit sightseeing and hiking the fortress walls, with warm days and cooler, quieter evenings.
Bring swimwear, sandals and sun cream for summer, plus light layers for warm evenings. Comfortable shoes help on the old town's stone streets and fortress climb. Spring and autumn need a light jacket, and winter visits call for a warm coat and umbrella for the frequent rain.
The sea is warmest in August at around 26°C. July and September are also comfortable at 25°C and 24°C.
June and September are ideal, combining warm 25–28°C days, a swimmable sea and fewer crowds than peak July and August.
Kotor is the rainiest part of the coast in winter, with 14–15 wet days a month from November to January. Summers are dry, with just three rainy days in July.
July and August highs average around 31°C. The surrounding mountains can make the bay feel humid, but sea breezes usually ease the afternoon heat.
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