Sunshine hours in Ulaanbaatar: 2,804 hours a year, month by month

Ulaanbaatar gets 2,804 hours of sunshine a year on average (7.7 a day). Sunniest month: May with 298 hours. Every month, measured 1991–2020.

• Ulaanbaatar gets 2,804 hours of sunshine a year on average, 7.7 a day – 63% of the astronomically possible. The sunniest month is May with 298 hours (9.6 a day), the dullest December with 138 (4.5 a day).
• Weather station: Ulaanbaatar – 1991–2020 average, Deutscher Wetterdienst.

Sunshine hours month by month

• January: 164 h · 5.3 h a day · 59 %
• February: 204 h · 7.3 h a day · 71 %
• March: 257 h · 8.3 h a day · 70 %
• April: 265 h · 8.8 h a day · 65 %
• May: 298 h · 9.6 h a day · 63 %
• June: 282 h · 9.4 h a day · 59 %
• July: 278 h · 9.0 h a day · 58 %
• August: 265 h · 8.5 h a day · 60 %
• September: 250 h · 8.3 h a day · 66 %
• October: 228 h · 7.4 h a day · 68 %
• November: 175 h · 5.8 h a day · 63 %
• December: 138 h · 4.5 h a day · 53 %

Questions about sunshine hours

• How many hours of sunshine does Ulaanbaatar get a year? On average over 1991–2020 the sun shines in Ulaanbaatar for 2,804 hours a year – 7.7 hours a day and 63% of the time the sun is above the horizon.
• What is the sunniest month in Ulaanbaatar? May, with 298 hours of sunshine, 9.6 a day on average. The least sun comes in December: 138 hours, 4.5 a day.
• 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. Ulaanbaatar uses the station Ulaanbaatar.
• 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.