The climate in Uruguay is temperate: warm summers and cold winters. The predominantly gently undulating landscape is also somewhat vulnerable to rapid changes from weather fronts. It receives the periodic influence of the polar air. Without mountains in the zone that act as a barrier, the air masses freely move by the territory, causing fast variations of the climate. The coolest month is June, while the warmest is January. The rainfall is equally distributed throughout the year, but tends to be a bit more frequent in the autumn months. There can be frequent thunderstorms in the summer.
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