The month in detail
What to expect in September
Autumn in Monaco is often underrated: 24°C, golden light and declining crowds. An interesting window. Rain risk remains low (17% of days), leaving good room for outdoor activities. A good balance between weather and crowds, even if July (9.4/10) remains theoretically better.
September ranks 4 out of 12 months in Monaco. Compared to August: −4°C daytime, 9 pts more rainy days, −2.1h of sun per day.
This month's conditions
What it's like in September
UV index
5 · moderate
protect during midday hours
Feels like
comfortable
14°
Sea
24°C
pleasant for swimming
Daylight
12.3h of daylight
Air quality
good
AQI 30
Compare
Is September the right month?
The best month in Monaco is July (9.4/10), 1.1 pt higher than September.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Monaco
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Monaco
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach holiday.
Country · Monaco
🗣️LanguageFrench
💶CurrencyEuro (€)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘVery expensive · 5/5
🌡️ Climate
🌍Climate typeTemperate oceanic
📈Climate trend ⓘStable
🔥Hottest monthAugust · 28°C
❄️Coolest monthJanuary · 12°C
🌧️Rainiest month ⓘApril · 24%
🏖️ Beach holiday
📅Peak seasonJuin → Sept
🏖️Swell (Sept–Mar) ⓘModérée
Explore
Other destinations in September
If September doesn't convince you for this destination, compare with others.
Location
Where is Monaco ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
MonacoTemperate oceanic climate with a 9.4 → 4.3 gap between best and worst month. 10 years of ERA5 data to choose by project.
43.74°N · 7.42°E
Questions
Frequently asked questions
What is the best time to visit Monaco?
July is the best month with 27.0°C highs, 21.0°C lows, 10.6h of sunshine and 5.0% rainy days. The months of July & August offer comparable conditions.
How many hours of sunshine does Monaco get in July?
Monaco averages 10.6 sunshine hours per day in July. It is the sunniest month with a climate score of 9.3/10.
What is the rainiest month in Monaco?
January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Monaco in July?
In July, overnight lows reach 21.0°C, while afternoon highs average 27.0°C.
Is Monaco good in winter?
In winter (December-February), Monaco scores 4.1/10 on average — Difficult period — prefer the peak season.. The best month overall remains July with a score of 9.3/10.
When should you avoid Monaco?
January is the most difficult month to visit Monaco, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in Monaco in September?
In September, the sea averages 24°C in Monaco: pleasant for swimming. Swimming is pleasant without a wetsuit.
Do you need sun protection in Monaco in September?
The average UV index reaches 5 in September in Monaco (moderate), with about 12.3h of daylight. Protect during midday hours.