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The climate in Uruguay

Average daytime and nighttime temperatures

All climate diagrams on this page result from the collected data of 24 weather stations.
All data correspond to the average monthly values of the last 20 years.
Back to overview: Uruguay
Climate zone: sub-tropics of the southern hemisphere
Several months of the year it is warm to hot at temperatures continuously above 25 degrees Celsius, sometimes up to 30 degrees. The warmest and also rainiest greaster region is Northern Interior. The coldest is Atlantic Coast.
Duration of daylight and sunshine in Uruguay
Compare climate with other regions or countries
Hours of sunshine per daySunshine hours per day in Uruguay
Rainy days per monthRainy days per month in Uruguay
Precipitation in mm/dayPrecipitation in Uruguay
Relative humidity in %Relative humidity in Uruguay
Absolute humidity in g/m³Absolute humidity in Uruguay

Greater regions in Uruguay

All figures per year. For detailed climate data click on the name of the region.
Greater regionTemperature
max Ø day
Temperature
min Ø night
Sunshine
hours
Rainy
days
Precipitation
Atlantic Coast22.0 °C12.3 °C2,300 h86 1,314 l
Central Interior22.4 °C12.3 °C2,373 h82 1,314 l
Northern Interior24.6 °C13.3 °C2,482 h77 1,460 l
Rio de la Plata22.9 °C12.2 °C2,409 h72 1,194 l

Temperature records of the last 73 years

The hottest temperature measured from 1949 to September 2022 was reported by the Mercedes weather station. In January 2022 the record temperature of 42.7 °C was reported here. The hottest summer from July to September, based on all 14 weather stations in Uruguay , was recorded in 2017 with an average temperature of 14.8 °C. This average temperature will normally be measured every 4 to 6 hours, thus also including the nights. Normally, this value is 12.7 degrees Celsius. The average maximum daily temperature at that time was 19.1 °C.
The coldest day in these 73 years was reported by the weather station Salto. Here the temperature dropped to -22.0 °C in July 2000. Salto lies at an altitude of 42 meters above sea level. The coldest winter (January to March) was in 1951 with an average temperature of 18.8 °C. In Uruguay, it is usual to have about 4.0 degrees more at 22.8 °C for this three-month period.
The most precipitation fell in April 1959. With 26.7 mm per day, the Salto weather station recorded the highest monthly average of the last 73 years. Incidentally, the region with the most rainfall for the whole year is around Artigas. The driest region is near Punta Del Este.

Data basis and methodology

The data of the individual measuring stations are based on the archives of the German Weather Service, individual values averaged and supplemented by own elements. In order to determine a representative national average, average values were first calculated for each part of the country, which were then summarized at the national level. Thus, if a disproportionate number of weather stations are located in a small area, their number does not affect the national average. There are 15 stations in Uruguay itself. In 9 cases, neighboring but nearby weather stations were also used to obtain more accurate values.
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