Yearly & Monthly weather - Montevideo, Uruguay

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

The climate of Montevideo

Categorized under the Köppen climate classification as Cfa, Montevideo, the vibrant capital of Uruguay, nestles perfectly within a humid subtropical climate zone. This signifies absence of a dry season within the capital city. Over the calendar year, the climatic patterns and conditions display substantial variation, influenced by its geographical position and the advancing seasons.

A closer examination of the annual weather pattern unravels a skew towards mild to warmer temperatures, oscillating from 7.2°C (45°F) to around 28.4°C (83.1°F) range. The hotter months are generally from December to March, with January being the hottest at 28.4°C (83.1°F), whereas the winter months, predominantly from June to September, witness lows sinking to between 7.2°C (45°F) and 16.2°C (61.2°F). The coldest month is July with the lowest recorded temperature of 7.2°C (45°F).

Humidity in Montevideo ranges monthly from 67% to 82%, the month of June typically recording the highest relative humidity of 82%. With respect to rainfall, the city witnesses a fair distribution throughout the year, presenting a range of approximately 83mm (3.27") to 109mm (4.29"). Peek in the precipitation is usually in the month of October, thereby adding to the overall subtropical climate characterization.

The best time to visit Montevideo

Given Montevideo's mild climate and moderate weather conditions, the city is quite welcoming for tourists and visitors all year round. However, the best time to visit would be late spring and early summer, typically from November to February. During this period, the city experiences warm and pleasant weather, with December and January showcasing the highest UV index of 12. Average temperatures from 23.7°C (74.7°F) to 28.4°C (83.1°F) and ample daylight hours up to 14 hours in December make it an attractive destination for outdoor activities and sightseeing.

The worst time to visit Montevideo

While each season has its own charm, winter months from June to August might be less inviting for visitors, particularly those keen on experiencing Uruguay's outdoor delights. Average low temperatures can dip to about 7.2°C (45°F) in July, paired with a relatively high rain count of around 7 days in June and July. Moreover, maximum UV index of just 2 coupled with limited daylight hours, dropping as low as 9.8 hours in June, might make sightseeing less appealing.

Spring weather in Montevideo

Spring, spanning the months of September to November, comes to Montevideo with a refreshing swing in weather conditions. Average temperatures are mild and range from 18°C (64.4°F) to 23.7°C (74.7°F), thus encouraging exploration within the city. The relative humidity drops to the annual average of 71% and rainfall varies from 94mm (3.7") in September to 89mm (3.5") in November. The daylight hours begin to extend, reaching up to 14 hours in November while the average UV index moves from 6 in September to 10 in November, promising more sun-soaked hours.

Summer weather in Montevideo

Summer in Montevideo is warm, extending from December through February. During these months, the temperatures hover between 26.5°C (79.7°F) and 28.4°C (83.1°F). This is also the time of the year when the city receives the longest daylight hours, with up to 14.5 hours in December. Despite an average rainfall of 87mm (3.43") in December, the city savors longer sun exposure with UV index peaking at 12.

Autumn weather in Montevideo

Marked by cooling temperatures, Autumn in Montevideo prevails from March till May. The average temperature ranges dip from 25.5°C (77.9°F) in March to around 18.6°C (65.5°F) in May. While the daylight hours decrease to around 10.3 hours in May, the city observes an increase in rainfall from 105mm (4.13") in March to 89mm (3.5") in May with an average of 6 rainfall days.

Winter weather in Montevideo

Winter in Montevideo, extending from June to August, is characterized by the coldest weather of the year. During this period, the city experiences average temperatures falling from 15.1°C (59.2°F) in June to a yearly low of 7.2°C (45°F) in July. The shortest daylight hours are seen in June at 9.8 hours, with an average UV index of 2. Despite the cold temperatures, rainfall isn't significantly high ranging from 83mm (3.27") to 86mm (3.39") across these months.

Weather in January

The year starts in Montevideo, Uruguay with higher temperatures, hinting at strong summer weather conditions. A beach outing is desirable due to the warm sea temperature of 24.2°C (75.6°F). A slight decrease in temperature is observed from January to February. Weather in January »

Weather in February

The near perfect resemblance between January's and February's climatic patterns creates an extended summer feel in Montevideo. Rainfall increases to 102mm (4.02") from 87mm (3.43") in January, contributing to the relatively high humidity of 69%. Weather in February »

Weather in March

March observes the farewell of Uruguayan summer as temperatures begin to decline, preparing for the arrival of Autumn. There's a shift in the climatological scene as rainfall hits its peak at 105mm (4.13"). Cooler evenings foresee the approaching climate changes and shorter days. Weather in March »

Weather in April

April brings Montevideo into the heart of Autumn, with a more cooler and refreshing atmosphere. The change in season is characterized by a fall in sea temperature to 19°C (66.2°F), resulting in less crowded shores. There's a noteworthy shift in daylight and sunshine duration compared to March. Weather in April »

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. Weather in May »

Weather in June

June marks the beginning of winter in Montevideo, Uruguay, painting the city with a cooler palette. The lowest sea temperature of the year at 13.1°C (55.6°F) discourages water-based activities. A noticeable decrease in sunshine duration and day length occurs creating shorter days. Weather in June »

Weather in July

In the midst of winter, July exhibits colder nights with the least variance in climatic conditions. A minor increase in rainfall to 86mm (3.39") distinguishes July from the preceding month. Crisp winter days prevail throughout the month and it's the ideal time for indoor activities. Weather in July »

Weather in August

August presents a gentle transition from winter to spring, showcasing slightly longer days and extended sunshine duration. An uptick in sea temperature to 12.1°C (53.8°F) hints at the changing season. The rainfall remains almost stable at 88mm (3.46") maintaining the wet conditions from July. Weather in August »

Weather in September

September, the dawn of Montevideo's spring exhibits warmer temperatures and extended sunshine hours. The sea temperature gradually increases to 13.3°C (55.9°F), inviting for enjoyable walks along the beaches. From a climatological perspective, a rise in rainfall to 94mm (3.7") can be seen. Weather in September »

Weather in October

By October, Montevideo fully embraces spring with pleasant weather encouraging outdoor enjoyment. Rainfall peaks again at 109mm (4.29"), being the highest in the second half of the year. Day and sunshine durations increase noticeably, painting long vibrant days. Weather in October »

Weather in November

November in Montevideo, Uruguay signals the transition to summer with warmer days and increasing sunshine durations. A marked increase in sea temperature to 19.8°C (67.6°F) revitalizes the beach scene. The weather remains comfortable despite the minimal fluctuation in humidity levels. Weather in November »

Weather in December

December puts forward Montevideo's summer with longer sun-filled days and warm sea temperatures. A peak sea temperature of 21.9°C (71.4°F) invites locals and tourists to enjoy beach activities. Gradual decrease in rainfall to 84mm (3.31") announces the holiday season with clear skies. Weather in December »

Updated: Jun 4, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the warmest months?

In Montevideo, the average temperatures in January are the highest, with a peak at 28.4°C (83.1°F) and a low of 18°C (64.4°F).

How many days does it rain?

In Montevideo, during the entire year, the rain falls for 77 days and collects up to 1101mm (43.35") of precipitation.

What month is the sea warmest?

The month with the warmest seawater is January, with an average sea temperature of 24.2°C (75.6°F).

What month has the most sunshine?

The month with the most sunshine is January, with an average of 9.5h of sunshine.

When is the highest UV index?

January and December, with an average maximum UV index of 12, are months with the highest UV index.

What is the most humid month?

With an average relative humidity of 82%, June is the most humid month.

What is the driest month?

June is the month with the least rainfall. Rain falls for 7 days and accumulates 83mm (3.27") of precipitation.

What is the month with the shortest days?

The month with the shortest days is June, with an average of 9h and 48min of daylight.

What is the month with the least sunshine?

With an average of 4.3h of sunshine, June has the least sunshine of the year.

When is the lowest UV index?

June and July, with an average maximum UV index of 2, are months with the lowest UV index.

What time of the year is the coldest?

Montevideo experiences its average lowest temperatures in July, reaching a peak of 15°C (59°F) and a minimum of 7.2°C (45°F).

When is the sea coldest?

With an average sea temperature of 11.3°C (52.3°F), July is the month with the coldest seawater in Montevideo.

What is the wettest month?

October is the month with the most rainfall in Montevideo. Rain falls for 7 days and accumulates 109mm (4.29") of precipitation.

What is the least humid month?

With an average relative humidity of 67%, December is the least humid month.

When are the longest days?

December has the longest days of the year in Montevideo, Uruguay, with an average of 14h and 30min of daylight.

Is there Daylight Saving Time (DST)?

Montevideo does not utilize Daylight Saving Time (DST). -03 timezone is used throughout the entire year.

Today

Tomorrow

Long-term

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

Average temperature
Montevideo, Uruguay

Average high temperature in January:
28.4°C
Average high temperature in February:
27.5°C
Average high temperature in March:
25.5°C
Average high temperature in April:
22°C
Average high temperature in May:
18.6°C
Average high temperature in June:
15.1°C

Average high temperature in July:
15°C
Average high temperature in August:
16.2°C
Average high temperature in September:
18°C
Average high temperature in October:
20.5°C
Average high temperature in November:
23.7°C
Average high temperature in December:
26.5°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 January:
18°C
Average low temperature in February:
17.9°C
Average low temperature in March:
16.2°C
Average low temperature in April:
12.9°C
Average low temperature in May:
10.2°C
Average low temperature in June:
7.7°C

Average low temperature in July:
7.2°C
Average low temperature in August:
7.8°C
Average low temperature in September:
9.1°C
Average low temperature in October:
11.5°C
Average low temperature in November:
14.2°C
Average low temperature in December:
16.3°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
Montevideo, Uruguay

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

Average rainfall
Montevideo, Uruguay

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
Montevideo, Uruguay

Average rainfall days in January:
6 days
Average rainfall days in February:
7 days
Average rainfall days in March:
6 days
Average rainfall days in April:
6 days
Average rainfall days in May:
6 days
Average rainfall days in June:
7 days

Average rainfall days in July:
7 days
Average rainfall days in August:
6 days
Average rainfall days in September:
6 days
Average rainfall days in October:
7 days
Average rainfall days in November:
7 days
Average rainfall days in December:
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).

Average sea temperature
Montevideo, Uruguay

Average sea temperature in January:
24.2°C
Average sea temperature in February:
23.4°C
Average sea temperature in March:
22.4°C
Average sea temperature in April:
19°C
Average sea temperature in May:
15.9°C
Average sea temperature in June:
13.1°C

Average sea temperature in July:
11.3°C
Average sea temperature in August:
12.1°C
Average sea temperature in September:
13.3°C
Average sea temperature in October:
17.2°C
Average sea temperature in November:
19.8°C
Average sea temperature in December:
21.9°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 / Average sunshine
Montevideo, Uruguay

Average daylight in January:
14h and 1min
Average daylight in February:
13h and 2min
Average daylight in March:
12h and 2min
Average daylight in April:
11h and 1min
Average daylight in May:
10h and 2min
Average daylight in June:
9h and 5min

Average daylight in July:
10h and 1min
Average daylight in August:
10h and 5min
Average daylight in September:
11h and 5min
Average daylight in October:
13h and 0min
Average daylight in November:
14h and 0min
Average daylight in December:
14h and 3min

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 January:
9h and 3min
Average sunshine in February:
8h and 1min
Average sunshine in March:
7h and 1min
Average sunshine in April:
6h and 0min
Average sunshine in May:
5h and 2min
Average sunshine in June:
4h and 2min

Average sunshine in July:
4h and 3min
Average sunshine in August:
5h and 2min
Average sunshine in September:
6h and 1min
Average sunshine in October:
7h and 4min
Average sunshine in November:
8h and 2min
Average sunshine in December:
9h and 1min

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).

Average UV index
Montevideo, Uruguay

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).

Climate and monthly weather forecastMontevideo, Uruguay

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