Rosario weather in August 2025

Expect 18°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Rosario in August. Check more long-term weather averages for Rosario in August before you book your next holiday to Argentina in 2025/2026.

  • 18°C maximum daytime temperature in August in Rosario18
    18°C max day temperature
  • 6 hours of sunshine per day
  • 5 days with some rainfall in August in Rosario5
    5 days with some rainfall
  • 6°C minimum night-time temperature in August in Rosario6
    6°C min night temperature
  • 11 hours of daylight per day in August in Rosario11
    11 hours of daylight per day
  • No heat & humidity in August in Rosario0
    No heat & humidity
  • 36 mm monthly rainfall in August in Rosario36
    36 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in August in Rosario4
    4 (Moderate) UV index

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The August weather guide for Argentina (Rosario) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Argentina

How hot is it in Rosario in August?

Daytime temperatures usually reach 18°C in Rosario in August, falling to 6°C at night.

How sunny is it in Rosario in August?

There are normally 6 hours of bright sunshine each day in Rosario in August - that's 58% of daylight hours.

Does it rain in Rosario in August?

There are usually 5 days with some rain in Rosario in August and the average monthly rainfall is 36mm.

Rosario August sunrise & sunset times

Browse the sunrise and sunset times for Rosario in August 2025. Select a month to view Rosario sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 07:53 18:25
Saturday, 16th August 2025 07:39 18:35
Sunday, 31st August 2025 07:21 18:45

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