Weather in Monte Carlo: May
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Average day temperature: | 67.0°F |
| Average night temperature: | 58.5°F | |
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Sea water temperature: | 64.2°F |
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Number of sunny days: | 20 days |
| Day length: | 14.2 - 15.2 hours | |
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Number of rainy days: | 3 days |
| Precipitation totals: | 1.5 in. | |
| more information | ||
14 days
forecast
forecast
| Monte Carlo |
sea water
temperature
temperature
| Monte Carlo |
Air temperature in May, °F
Show year:
2026
2025
2024
The highest day temperature during May of 2026 was 74°F. At the same time the lowest night temperature was 55°F. Daily and nightly averages during May were 66.2°F and 62.1°F.
Sea water temperature in Monte Carlo in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 65.6°F. The highest and lowest sea temperatures during the month were 72.0°F and 61.3°F.
Sunny, partly cloudy and cloudy days
Mostly all days in May are sunny but cloudy days are also possible.
Precipitation total in May, in.
Precipitation total value in Monte Carlo in May is 1.3 in. Other months of the year show relatively similar values.
Wind speed in May, mph
The average wind speed value in May is 6.0 mph
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in May is: 9.5.
Best time for vacation in Monte Carlo
Monte Carlo on a weather map
24 Hours Forecast
Monte Carlo
Local time: 14:06
May 30, saturday
1500
75°F
N
6 mph
6 mph
1800
73°F
NE
5 mph
5 mph
2100
72°F
E
3 mph
3 mph
May 31, sunday
0000
70°F
E
3 mph
3 mph
0300
70°F
SW
2 mph
2 mph
0600
70°F
SW
6 mph
6 mph
0900
72°F
W
7 mph
7 mph
1200
72°F
NW
6 mph
6 mph
