Sunshine hours in Hiroshima: 2,034 hours a year, month by month

Hiroshima gets 2,034 hours of sunshine a year on average (5.6 a day). Sunniest month: May with 211 hours. Every month, measured 1991–2020.

• Hiroshima gets 2,034 hours of sunshine a year on average, 5.6 a day – 46% of the astronomically possible. The sunniest month is May with 211 hours (6.8 a day), the dullest January with 139 (4.5 a day).
• Number 101 of 275 large cities in Japan.
• Weather station: Hiroshima – 1991–2020 average, Deutscher Wetterdienst.

Sunshine hours month by month

• January: 139 h · 4.5 h a day · 44 %
• February: 140 h · 5.0 h a day · 46 %
• March: 177 h · 5.7 h a day · 48 %
• April: 192 h · 6.4 h a day · 49 %
• May: 211 h · 6.8 h a day · 49 %
• June: 155 h · 5.2 h a day · 36 %
• July: 173 h · 5.6 h a day · 39 %
• August: 207 h · 6.7 h a day · 50 %
• September: 167 h · 5.6 h a day · 45 %
• October: 179 h · 5.8 h a day · 51 %
• November: 153 h · 5.1 h a day · 49 %
• December: 141 h · 4.5 h a day · 46 %

Questions about sunshine hours

• How many hours of sunshine does Hiroshima get a year? On average over 1991–2020 the sun shines in Hiroshima for 2,034 hours a year – 5.6 hours a day and 46% of the time the sun is above the horizon.
• What is the sunniest month in Hiroshima? May, with 211 hours of sunshine, 6.8 a day on average. The least sun comes in January: 139 hours, 4.5 a day.
• Is Hiroshima a sunny city? Among the 275 large cities in Japan with measurements, Hiroshima ranks number 101.
• 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. Hiroshima uses the station Hiroshima.
• 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.