May weather - Autumn 2024 - Montevideo, Uruguay

Weather in May
Frequently asked questions
Average temperature in May
Average humidity in May
Average rainfall in May
Average rainfall days in May
Average sea temperature in May
Average daylight in May
Average sunshine in May
Average UV index in May

Beautiful lawns and palm trees in the independence square outside the Centrally placed Salvo Palace in Montevideo, Uruguay

Weather in May

May ushers in the colder period of Montevideo's climatic pattern, with signs of winter becoming clearer. Decreased daylight hours coupled with increased rainfall creates an ambiance of winter approaching. The sea temperature dips further down to 15.9°C (60.6°F), making it the coolest thus far in the year. Residents tend to spend more time indoors due to the shorter sunshine hours and falling temperatures. Transitioning to winter, May exhibits a peak in humidity levels at 78%.

Temperature

The beginning of May brings a slight decrease in the average high-temperature, transitioning from an agreeable 22°C (71.6°F) in April to a comfortable 18.6°C (65.5°F). Montevideo throughout May, records an average low-temperature of 10.2°C (50.4°F).

Humidity

The average relative humidity in May in Montevideo is 78%.

Rainfall

In Montevideo, in May, during 6 rainfall days, 89mm (3.5") of precipitation is typically accumulated. Throughout the year, in Montevideo, there are 77 rainfall days, and 1101mm (43.35") of precipitation is accumulated.

Sea temperature

In May, the average sea temperature in Montevideo is 15.9°C (60.6°F).
Note: Swimming is not a pleasurable activity for the majority in water at 15.9°C (60.6°F). Breathing control gets harder as the water temperature dips from 21°C (69.8°F) to 15°C (59°F).

Daylight

In May, the average length of the day is 10h and 18min.
On the first day of May, sunrise is at 07:21 and sunset at 18:01. On the last day of the month, sunrise is at 07:43 and sunset at 17:41 -03.

Sunshine

The average sunshine in May is 5.3h.

UV index

The average daily maximum UV index in May is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: In May, a regular UV index of 3 translates into these guidelines:
Prioritize safety - Recommendations to avert sunburn are shared. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.

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Frequently asked questions

What are May temperatures in Montevideo?

In May, in Montevideo, the average high-temperature is 18.6°C (65.5°F), and the average low-temperature is 10.2°C (50.4°F). In February, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, is estimated at 30°C (86°F).

What is the average humidity in May in Montevideo?

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

How many days does it rain in May in Montevideo?

In Montevideo, during May, the rain falls for 6 days and regularly aggregates up to 89mm (3.5") of 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). 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).

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

In Montevideo, the average day length in May is 10h and 18min.

What time are sunrise and sunset in May in Montevideo?

On the first day of May in Montevideo, sunrise is at 07:21 and sunset at 18:01. On the last day of the month, sunrise is at 07:43 and sunset at 17:41 -03.

How many hours of sunshine does Montevideo have in May?

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

How high is the UV index in May in Montevideo?

In May, the average daily maximum UV index in Montevideo, Uruguay, is 3. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A May J J A S O N D

Apr

May

Jun

Average high temperature

22°C 71.6°F

18.6°C 65.5°F

15.1°C 59.2°F

Average low temperature

Average humidity

Average rainfall

Average rainfall days

Average sea temperature

Average daylight

Average sunshine

Average UV index

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).

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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%).

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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).

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Average rainfall days in May
Montevideo, Uruguay

Average rainfall days in May: 6 days

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

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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).

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Average daylight in May /
Average sunshine in May
Montevideo, Uruguay

Average daylight in May: 10h and 2min

The month with the longest days is December (Average daylight: 14h and 30min).
The month with the shortest days is June (Average daylight: 9h and 48min).

Average sunshine in May: 5h and 2min

The month with the most sunshine is January (Average sunshine: 9h and 30min).
The month with the least sunshine is June (Average sunshine: 4h and 18min).

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Average UV index in May
Montevideo, Uruguay

Average UV index in May: 3

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

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May weather forecast
Montevideo, Uruguay

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