The coast runs a Mediterranean season: warm from May, hot in July and August, swimmable into October. The north runs a mountain season: passes blocked into May, best from late June to September, ski from December. They overlap for about ten weeks, and those ten weeks are also when the coast is fullest.
Month by month
| Month | Coast | North | Crowds |
|---|---|---|---|
| April | 15–18°C air, sea too cold | Snow above 1,400 m, passes shut | Empty |
| May | 20–23°C, sea around 18°C | Rivers at their highest, rafting hardest | Quiet |
| June | 25–28°C, sea 22°C | Everything open, wildflowers | Filling |
| July | 30°C+, sea 25°C | Warm days, cool nights | Full |
| August | 30°C+, sea 26°C | Best walking weather | Fullest |
| September | 26–28°C, sea 25°C | Clear, stable, quiet | Emptying fast |
| October | 20–23°C, sea 22°C | First snow late in the month | Quiet |
| November – March | Mild, wet, many places shut | Ski at Žabljak and Kolašin | Locals only |
What most people should book
September. The sea is warmer than in June because it has had all summer to heat up, the crowds thin sharply after the twentieth of August, prices drop, and the mountain weather is at its most stable. If you can only go once and you can choose the month, go in September.
The case for May
May is the wrong month for the beach and the right month for everything else. Snowmelt puts the Tara and the Piva at their highest, which is when rafting is genuinely exciting rather than a float. The canyons are loud, the hills are green rather than burnt, and the coast is half price and half empty.
The sea will be about 18 degrees. People swim in it. They do not enjoy it.
What closes and when
- Beach clubs and coastal restaurants: many shut from mid-October to April, especially outside Budva and Kotor.
- Rafting: April to October. Outside that the water is too cold and too low.
- Nevidio canyon: July to September only, because it is impassable until the water drops.
- Mountain huts and katuns: roughly June to September.
- Ski at Žabljak and Kolašin: December to March, depending on snow.
- Everything in Kotor and Podgorica: open all year.
Weather that surprises people
Crkvice, in the hills above the Bay of Kotor, is one of the wettest inhabited places in Europe — over four metres of rain a year. The bay traps moisture against the mountains. A grey, pouring day in Kotor in October is normal, and the sun forty minutes away in Budva is also normal.
In summer the wind matters more than the temperature. The bura comes down cold off the mountains and flattens the sea; the jugo comes warm off the south and builds swell. Boat trips get cancelled for the second one more often than for rain.
