Monte Carlo Weather in May
May in Monte Carlo brings pleasant temperatures around 19°C (66°F) during the day, dropping to 14°C (57°F) at night, with quite a bit of rainfall expected, averaging around 60 mm (2.4 in) for the month.
Rainfall in Monte Carlo in May
You can expect rain on around 10 days based on historical patterns, with 60 mm (2.4 in) average for the month. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.
Temperature in Monte Carlo in May
In May, Monte Carlo sees pleasant temperatures, with highs of 19°C (66°F). Nights drop to around 14°C (57°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. With lows of 14°C (57°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Monte Carlo in May
With approximately 271 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.
Average water temperature in May
At 18°C (64°F), the water is getting there — comfortable enough for most swimmers, though those used to warmer seas may still find it a touch cool.If you prefer dry days with pleasant temperatures, June, July, August and September typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Monaco, check out our Monte Carlo's climate page.
Monte Carlo Temperature in May
Min Temperature
14°C (57°F)
Max Temperature
19°C (66°F)
Water Temperature
18°C (64°F)
Chance of Rain
35%
Precipitation
60 mm (2.4 in)
Rainy days
10 days
Sunshine
271 hours
Percentage Sunshine
58%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Monte Carlo typically rise from around 19°C (66°F) at the start of May to approximately 22°C (72°F) by the end. Nights are pleasant, with lows typically ranging from 12°C (54°F) to 16°C (61°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Monte Carlo in May
Browse day-by-day weather records for Monte Carlo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Monte Carlo historical weather extremes in May
Our historical data for Monte Carlo spans 1976 to 2026, revealing these weather extremes.
- On May 31, 1982, temperatures climbed to 32°C (90°F), marking the warmest May day on record.
- On May 6, 2025, Monte Carlo saw its coldest May day with temperatures maxing out at 12°C (54°F).
- The lowest overnight temperature recorded in May was 5°C (41°F) (May 8, 2025).
Best Places in Monaco in May
Find out more about the weather in Monaco and which places have the best travel conditions in this month. See all of Monaco in May →
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What to Wear in Monte Carlo in May
Comfortable temperatures call for an easy wardrobe in May. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. With water temperatures around 18°C (64°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Monte Carlo in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Monaco, check out our Monte Carlo's climate page.
Temperature Rainfall Sunshine Water Temp
See the full Monte Carlo climate overview or explore weather in Monaco.
