May weather forecast and climate
Montevideo, Uruguay

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 last month of the autumn, May, is another comfortable month in Montevideo, Uruguay, with average temperature varying between 10.2°C (50.4°F) and 18.6°C (65.5°F).

Temperature

In Montevideo, Uruguay, the average high-temperature in May marginally drops, from a pleasant 22°C (71.6°F) in April, to an enjoyable 18.6°C (65.5°F). The average low-temperature, in Montevideo, is 10.2°C (50.4°F).

Humidity

In May, the average relative humidity in Montevideo is 78%.

Rainfall

In Montevideo, it is raining for 6 days, with typically 89mm (3.5") of accumulated precipitation. Throughout the year, there are 77 rainfall days, and 1101.2mm (43.35") of precipitation is accumulated.

Sea temperature

In May, the average sea temperature in Montevideo, Uruguay, is 15.9°C (60.6°F).
Note: Swimming in 15.9°C (60.6°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

Daylight

The average length of the day in May is 10.3h.

Sunshine

In Montevideo, the average sunshine in May is 5.3h.

UV index

In Montevideo, the average daily maximum UV index in May is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 3 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in May in Montevideo?

The average high-temperature, in May, in Montevideo, Uruguay, is 18.6°C (65.5°F), while the average low-temperature is 10.2°C (50.4°F).

What is the average humidity in May in Montevideo?

In May, the average relative humidity is 78%.

How much does it rain in Montevideo in May?

In Montevideo, Uruguay, in May, it is raining for 6 days, with typically 89mm (3.5") of accumulated precipitation.

How cold is the water in May in Montevideo?

In Montevideo, in May, the average water temperature is 15.9°C (60.6°F). For most, swimming in 15.9°C (60.6°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

What is the average length of the day in May in Montevideo?

In Montevideo, the average length of the day in May is 10.3h.

How long on average sun shines in May in Montevideo?

In May, the average sunshine in Montevideo is 5.3h.

What is the UV index reading in May in Montevideo?

In Montevideo, the average daily maximum UV index in May is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV rays.
Average temperature in May - Montevideo, Uruguay
  • 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).

  • 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).

Average humidity in May - Montevideo, Uruguay
  • 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%).

Average rainfall in May - Montevideo, Uruguay
  • Average rainfall in May: 89mm

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

Average rainfall days in May - Montevideo, Uruguay
  • 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 least rainy days are January, March, April, May, August, September and December (6 days).

Average sea temperature in May - Montevideo, Uruguay
  • 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).

Average daylight in May / Average sunshine in May - Montevideo, Uruguay
  • Average daylight in May: 10.3h

The month with the longest days is December (Average daylight: 14.5h).
The month with the shortest days is June (Average daylight: 9.8h).

  • Average sunshine in May: 5.3h

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

Average UV index in May - Montevideo, Uruguay
  • 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).