Montevideo
Uruguay
Long-term weather forecast
Long-term weather forecast
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May weather forecast and Climate
Montevideo, Uruguay

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Beautiful lawns and palm trees in the independence square outside the Centrally placed Salvo Palace in Montevideo, Uruguay
Beautiful lawns and palm trees in the independence square outside the Centrally placed Salvo Palace in Montevideo, Uruguay
The temperate weather of May is mild but humid. Highs range up to 18.6°C (65.5°F), but the humidity at 78% makes it feel warmer than the thermometer readings. Although there are occasional clouds and rain, the end of the fall season also presents many sunny days with clear skies.
The tourist numbers drop significantly in comparison to spring or summer, but it is an opportunity to live in and explore some of the nicest places in fair weather conditions.
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  • The average high temperature in May: 18.6°C

The warmest month (with the highest average high temperature) is January (28.4°C).
The month with the lowest average high temperature is July (15°C).

  • The average low temperature in May: 10.2°C

The month with the highest average low temperature is January (18°C).
The coldest month (with the lowest average low temperature) is July (7.2°C).

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  • The average humidity in May: 78%

The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is December (67%).

  • The average rainfall in May: 89mm

The wettest month (with the highest rainfall) is October (108.5mm).
The driest month (with the lowest rainfall) is June (83.1mm).

  • The average rainfall days in May: 6 days

Months with the highest number of rainy days are February, June, July, October and November (7 days).
Months with the lowest number of rainy days are January, March, April, May, August, September and December (6 days).

  • The average sea temperature in May: 15.9°C

The best month for swimming (with the highest average sea temperature) is January (24.2°C).
The coldest month (with the lowest average sea temperature) is July (11.3°C).

  • The average daylight in May: 10h

Months with the longest days are January, November and December (Average daylight: 14h).
Months with shortest days are May, June and July (Average daylight: 10h).

  • The average sunshine in May: 5.3h

The month with most sunshine is January (Average sunshine: 9.5h).
The month with least sunshine is June (Average sunshine: 4.3h).

  • The average UV index in May: 3

Months with the highest UV index are January and December (UV index 12).
Months with the lowest UV index are June and July (UV index 2).

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