Sunshine hours in Rosario: 2,614 hours a year, month by month

Rosario gets 2,614 hours of sunshine a year on average (7.2 a day). Sunniest month: January with 296 hours. Every month, measured 1991–2020.

• Rosario gets 2,614 hours of sunshine a year on average, 7.2 a day – 59% of the astronomically possible. The sunniest month is January with 296 hours (9.5 a day), the dullest June with 147 (4.9 a day).
• Number 10 of 38 large cities in Argentina.
• Nearest weather station: Rosario Airp., 12 km away – 1991–2020 average, Deutscher Wetterdienst.

Sunshine hours month by month

• January: 296 h · 9.5 h a day · 68 %
• February: 239 h · 8.5 h a day · 64 %
• March: 235 h · 7.6 h a day · 62 %
• April: 183 h · 6.1 h a day · 54 %
• May: 175 h · 5.6 h a day · 54 %
• June: 147 h · 4.9 h a day · 49 %
• July: 172 h · 5.5 h a day · 54 %
• August: 194 h · 6.3 h a day · 57 %
• September: 195 h · 6.5 h a day · 55 %
• October: 222 h · 7.2 h a day · 55 %
• November: 267 h · 8.9 h a day · 64 %
• December: 289 h · 9.3 h a day · 65 %

Questions about sunshine hours

• How many hours of sunshine does Rosario get a year? On average over 1991–2020 the sun shines in Rosario for 2,614 hours a year – 7.2 hours a day and 59% of the time the sun is above the horizon.
• What is the sunniest month in Rosario? January, with 296 hours of sunshine, 9.5 a day on average. The least sun comes in June: 147 hours, 4.9 a day.
• Is Rosario a sunny city? Among the 38 large cities in Argentina with measurements, Rosario ranks number 10.
• Where do the figures come from? From the 1991–2020 climate normals of Deutscher Wetterdienst: Germany from its own station network, the rest of the world from the CLIMAT reports of the national weather services. Rosario uses the station Rosario Airp..
• What counts as an hour of sunshine? By the World Meteorological Organization's definition the sun is shining once its direct radiation exceeds 120 watts per square metre. Just after sunrise and before sunset it is often too weak – which is why even deserts never reach 100%.

The sunniest large cities: United States

• 1. Phoenix: 3,873 h a year
• 2. Las Vegas: 3,826 h a year
• 3. Tucson: 3,806 h a year
• 4. Reno: 3,647 h a year
• 5. Sacramento: 3,609 h a year
• 6. Fresno: 3,565 h a year
• 7. Chico: 3,542 h a year
• 8. Colorado Springs: 3,463 h a year
• 9. Albuquerque: 3,414 h a year
• 10. Amarillo: 3,298 h a year

The cloudiest large cities: United States

• 1. Pittsburgh: 1,972 h a year
• 2. Anchorage: 2,063 h a year
• 3. Syracuse: 2,120 h a year
• 4. Seattle: 2,170 h a year
• 5. Columbus: 2,182 h a year
• 6. Grand Rapids: 2,188 h a year
• 7. Buffalo: 2,206 h a year
• 8. Meads: 2,259 h a year
• 9. Cleveland: 2,281 h a year
• 10. Rochester: 2,299 h a year

The sunniest large cities in the world

• 1. Mexicali: 4,017 h a year
• 2. Phoenix: 3,873 h a year
• 3. Las Vegas: 3,826 h a year
• 4. Tucson: 3,806 h a year
• 5. Ciudad Juárez: 3,763 h a year
• 6. Reno: 3,647 h a year
• 7. Dubai: 3,610 h a year
• 8. Sacramento: 3,609 h a year
• 9. Victoria de Durango: 3,573 h a year
• 10. Fresno: 3,565 h a year

The cloudiest large cities in the world

• 1. Chengdu: 962 h a year
• 2. Chongqing: 985 h a year
• 3. Sukabumi: 1,082 h a year
• 4. Glasgow: 1,153 h a year
• 5. Tanjung Pinang: 1,172 h a year
• 6. Medan: 1,201 h a year
• 7. Samarinda: 1,275 h a year
• 8. Sungai Penuh: 1,311 h a year
• 9. Limerick: 1,339 h a year
• 10. Huaihua: 1,352 h a year

• Data: Deutscher Wetterdienst (DWD), sunshine duration climate normals 1991–2020, CC BY 4.0. Possible hours: time between sunrise and sunset.