Sunshine hours in Tokyo: 1,926 hours a year, month by month

Tokyo gets 1,926 hours of sunshine a year on average (5.3 a day). Sunniest month: January with 193 hours. Every month, measured 1991–2020.

• Tokyo gets 1,926 hours of sunshine a year on average, 5.3 a day – 43% of the astronomically possible. The sunniest month is January with 193 hours (6.2 a day), the dullest June with 124 (4.1 a day).
• Number 138 of 275 large cities in Japan.
• Nearest weather station: Tokio, 9 km away – 1991–2020 average, Deutscher Wetterdienst.

Sunshine hours month by month

• January: 193 h · 6.2 h a day · 62 %
• February: 170 h · 6.1 h a day · 56 %
• March: 175 h · 5.6 h a day · 47 %
• April: 179 h · 6.0 h a day · 46 %
• May: 180 h · 5.8 h a day · 41 %
• June: 124 h · 4.1 h a day · 28 %
• July: 151 h · 4.9 h a day · 34 %
• August: 174 h · 5.6 h a day · 42 %
• September: 127 h · 4.2 h a day · 34 %
• October: 129 h · 4.2 h a day · 37 %
• November: 150 h · 5.0 h a day · 49 %
• December: 174 h · 5.6 h a day · 57 %

Questions about sunshine hours

• How many hours of sunshine does Tokyo get a year? On average over 1991–2020 the sun shines in Tokyo for 1,926 hours a year – 5.3 hours a day and 43% of the time the sun is above the horizon.
• What is the sunniest month in Tokyo? January, with 193 hours of sunshine, 6.2 a day on average. The least sun comes in June: 124 hours, 4.1 a day.
• Is Tokyo a sunny city? Among the 275 large cities in Japan with measurements, Tokyo ranks number 138.
• 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. Tokyo uses the station Tokio.
• 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 Kingdom

• 1. Southend-on-Sea: 1,846 h a year
• 2. Southampton: 1,780 h a year
• 3. Norwich: 1,719 h a year
• 4. London: 1,675 h a year
• 5. Plymouth: 1,673 h a year
• 6. Bristol: 1,654 h a year
• 7. Swansea: 1,644 h a year
• 8. Sheffield: 1,631 h a year
• 9. Edinburgh: 1,575 h a year
• 10. Birmingham: 1,490 h a year

The cloudiest large cities: United Kingdom

• 1. Glasgow: 1,153 h a year
• 2. Belfast: 1,372 h a year
• 3. Aberdeen: 1,448 h a year
• 4. Leeds: 1,488 h a year

The sunniest large cities in the world

• 1. Dubai: 3,610 h a year
• 2. Victoria de Durango: 3,573 h a year
• 3. Abu Dhabi: 3,522 h a year
• 4. Hermosillo: 3,479 h a year
• 5. Kassala: 3,451 h a year
• 6. Iranshahr: 3,410 h a year
• 7. Dammam: 3,391 h a year
• 8. Gaborone: 3,388 h a year
• 9. Zahedan: 3,386 h a year
• 10. Yazd: 3,381 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.