Monaco weather in May
Temperature, sea and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Excellent
Best time to visit: April – October
What is the weather like in Monaco in May?
In May, Monaco is mild: daytime highs average 21 °C, and nights cool down to about 14 °C. The sea averages 17.7 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 9 hours a day. Rain is frequent, with about 11 rainy days and 65 mm in total. All in all, May is an excellent month for a holiday in Monaco.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 14 h 41 min06:06 – 20:47
- UV index
- 8 · very highclear sky, noon (estimate)
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 11 km/haverage daily peak
- Cloud cover
- 54 %on average
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+2Europe/Monaco
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %97 %
- Few rainy daysweight 30 %49 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in May
- Wetsuit for longer swims
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Monaco in May: quick answers
Is Monaco hot in May?
No. In May, Monaco is mild: daytime highs average 21 °C and nights drop to about 14 °C.
Can you swim in Monaco in May?
Only if you don't mind cold water: in May the sea averages just 17.7 °C. Comfortable swimming is possible from June to October.
Does it rain much in Monaco in May?
Rain is frequent, with about 11 rainy days and 65 mm in total.
Monaco month by month
The whole year in MonacoAll destinations: Monaco
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)