Sunshine hours in Austin: 2,645 hours a year, month by month

Austin gets 2,645 hours of sunshine a year on average (7.2 a day). Sunniest month: July with 317 hours. Every month, measured 1961–1990.

• Austin gets 2,645 hours of sunshine a year on average, 7.2 a day – 60% of the astronomically possible. The sunniest month is July with 317 hours (10.2 a day), the dullest December with 154 (5.0 a day).
• Number 203 of 311 large cities in the United States.
• Nearest weather station: Austin/Municipal AP TX, 4 km away – 1961–1990 average, NOAA.

Sunshine hours month by month

• January: 164 h · 5.3 h a day · 51 %
• February: 169 h · 6.0 h a day · 54 %
• March: 206 h · 6.6 h a day · 55 %
• April: 206 h · 6.9 h a day · 53 %
• May: 227 h · 7.3 h a day · 54 %
• June: 286 h · 9.5 h a day · 68 %
• July: 317 h · 10.2 h a day · 74 %
• August: 298 h · 9.6 h a day · 73 %
• September: 234 h · 7.8 h a day · 63 %
• October: 216 h · 7.0 h a day · 61 %
• November: 168 h · 5.6 h a day · 53 %
• December: 154 h · 5.0 h a day · 49 %

Questions about sunshine hours

• How many hours of sunshine does Austin get a year? On average over 1961–1990 the sun shines in Austin for 2,645 hours a year – 7.2 hours a day and 60% of the time the sun is above the horizon.
• What is the sunniest month in Austin? July, with 317 hours of sunshine, 10.2 a day on average. The least sun comes in December: 154 hours, 5.0 a day.
• Is Austin a sunny city? Among the 311 large cities in the United States with measurements, Austin ranks number 203.
• Where do the figures come from? From the WMO climate normals 1961–1990 as archived by NOAA. There are no newer figures: the US stopped measuring sunshine duration in the 1990s. Austin uses the station Austin/Municipal AP TX, measured 1961–1990.
• 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: NOAA, WMO climate normals of sunshine duration, 1961–1990 average, public domain. Possible hours: time between sunrise and sunset.