Monaco (Monte Carlo) weather in October
October in Monaco: nice, rainy, with clean air — an excellent time to visit.
Updated September 2026 · climate normals from ERA5 reanalysis
#5 of 12 months in Monaco · #428 of 1413 destinations to visit in October · comfort 83/100 (tier A)
- Days
- 21°C
- Nights
- 15°C
- Wet days
- 10
- Sun
- 8.5 h
- Humidity
- 79%
- Daylight
- 11 h

Traveller notes on Monaco in October
Other months in Monaco
Monaco-forum threads on January weather describe a cold but frequently sunny month, coats and layers the norm but posters consistently reporting genuinely beautiful blue-sky days mixed in among the cooler, greyer ones. Regulars call it a fine time to visit for anyone chasing the views rather than the beach, the Rock and the harbor both photographing just as well under a crisp winter sky. Compared to the rest of northern Europe in the same month, posters describe the Riviera's winter as noticeably gentler, cold enough for a proper coat but rarely miserable for a walk along the port. Restaurants and the main sights stay open through the month, though the famously packed summer crowds are entirely absent, a real plus for anyone wanting to see the casino district without a crush of people. The record: 13.2C days feeling like 11C, 6.2C nights, 53mm across 6.8 days, a 14.9C sea, 75 percent humidity and 7 hours of sun.
Monaco-forum threads on June are short on drama compared to the Grand Prix month that precedes it - one poster's blunt summary is that it 'will be quite hot in June so take sun block, a hat, and comfortable shoes', and by this point the harbour and casino district are back to a normal, walkable pace. It's the start of real beach weather too, with the Mediterranean warming into swimmable territory. June's record: 25.1C days feeling like 29C, 19.5C nights, 13.2 hours of sun and a 23C sea - humid enough at 78 percent that the feels-like number does real work, with 9.8 rainy days still in the mix before the driest stretch of summer arrives.
Monaco forum regulars call March genuinely changeable: “some days sunny and warm, others rainy, sometimes there's a cold wind,” with the mood of a visit depending heavily on when Easter falls that year. It's quiet by Riviera standards — fewer crowds than the summer season — and every main attraction stays open, though regulars suggest checking specific opening times before counting on anything. A sunny day is called out as ideal for photographs, with the Rock and the harbor at their least crowded. Our record: 15°C days, 7.6°C nights, 5.2 rain days and a 13.9°C sea — mild and mostly dry on average, with the day-to-day swing the forum describes sitting underneath that number.
Monaco forum regulars call November a gamble rather than a write-off: “weather in November is impossible to predict with any certainty” — “if you are lucky it will be sunny and around 15C in the afternoon,” but “unlucky” means “10C and/or raining heavily,” since October and November are “the 2 rainiest months of the year.” Layer for both outcomes: a jacket for morning and evening is standard, but it can feel warm if the sun's out. One visitor who caught a clear stretch reported eating outside the whole stay. Our record: 15.8°C days, 10.1°C nights, 10.8 rain days and an 18.3°C sea still swimmable if the sun holds — consistent with the coin-flip framing.
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Monaco climate normals — October
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Monaco in October
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsCoaches for the guard change, Monaco Yacht Show, school holidays in 4 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Monaco's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherMonaco's best weather comes in May, June and September — separate windows, not one continuous season.
Best weatherFair weatherToughest weather
What's on in Monaco in October
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Coaches for the guard change
1 Apr – 31 Oct · usuallyDay-tripper crushCrowdedCoaches from Nice and the cruise ports empty onto the Rock before the guard change just before noon, and the palace square, the cathedral and the aquarium queue with them until mid-afternoon. Before ten it is another place. Source ↗
- Season
Sea warm enough to swim
25 Jun – 10 Oct · usuallyLarvotto is the only public beach and it is small, so it fills by mid-morning through the summer. The water stays comfortable well into October, when it empties again.
- Festival
Monaco Yacht Show
20 Sep – 1 Oct · usuallyMajor festivalCrowdedClosuresPort Hercule is closed off and filled bow-to-stern for four days in late September. Hotel rates match Grand Prix week and the quayside walk disappears behind hoarding. Source ↗
Nearby, and something's on
Within 300 km of Monaco — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Monaco?
Monaco in October — FAQ
- Is October a good time to visit Monaco?
- October in Monaco: nice, rainy, with clean air — an excellent time to visit. It ranks #5 of 12 months for Monaco on SeasonMap's comfort score (83/100).
- What is the weather like in Monaco in October?
- In October, Monaco averages a daily high of 21.3°C and a low of 14.9°C, with about 127 mm of rain over roughly 9.6 rainy days.
- What is the air quality in Monaco in October?
- Monaco has a mean US Air Quality Index of about 47 in October.
Within 300 km: Saint-Tropez's Les Voiles de Saint-Tropez on 26 Sep – 4 Oct, and Genoa's Rolli Days on 16–18 Oct.