Uruguay weather forecast for Tuesday, August 18, 2026: Unstable conditions expected nationwide

Uruguay is set for a day of unstable weather on Tuesday, August 18, 2026, according to the Uruguayan Institute of Meteorology (Inumet). Temperatures across the country are expected to fluctuate between a low of 6°C and a high of 19°C.

The northwest region will experience a cloudy morning with fog and mist, accompanied by rain and thunderstorms. Winds will blow from the south to southeast at 20-40 km/h, with strong gusts linked to the storms. These conditions are forecast to persist into the afternoon and night, with temperatures ranging from 10°C to 19°C.

In the northeast, a cloudy morning with fog, mist, rain, and thunderstorms is anticipated. Winds will be from the southeast at 10-40 km/h, with strong gusts. The afternoon and evening will see continued cloud cover, fog, rain, and storms, with temperatures between 10°C and 16°C.

The southwest will face a cloudy morning with rain and probable thunderstorms, under southeasterly winds of 20-40 km/h, gusting up to 50 km/h. The afternoon and night will bring overcast skies with isolated rain, and winds remaining strong from the southeast. Temperatures will be between 7°C and 12°C.

Similarly, the center-south region expects a cloudy morning with rain and probable storms, with strong southeasterly winds. The afternoon and night will see overcast conditions with persistent rain and storms, and winds gusting up to 50 km/h. The low will be 6°C and the high 12°C.

The east and metropolitan area will start with overcast skies, fog, rain, and probable storms, with winds reaching 20-40 km/h and gusts up to 50 km/h. Little change is expected for the afternoon and night. Temperatures will range from 7°C to 13°C. In Punta del Este, isolated rain is expected in the morning with strong winds, continuing into the evening.