Izumo vs Yonago: which is sunnier?
🇯🇵 Japan vs 🇯🇵 Japan · 33 km apart · long-term climate normals (NASA POWER, 2001–2020)
Izumo is the sunnier overall: about 1,647 hours of sunshine a year to Yonago's 1,515. Izumo has the higher Sunshine Score in 1 of 12 months; the other 11 are within 2 points.
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.


At a glance
| Izumo | Yonago | |
|---|---|---|
| Sunshine hours / year | 1,647 | 1,515 |
| Sunniest month | May (65/100) | May (65/100) |
| Nov–Feb average score | 15/100 | 15/100 |
| Jun–Aug average score | 62/100 | 61/100 |
| Rain / year | 1,738 mm | 1,738 mm |
| Warmest sea | 28°C / 82°F | 29°C / 84°F |
| Peak midday UV | 7 (high) | 7 (high) |
Izumo vs Yonago month by month
| Month | Sunshine Score | Day high °C | Rain mm | Sea °C | ||||
|---|---|---|---|---|---|---|---|---|
| Izumo | Yonago | Izumo | Yonago | Izumo | Yonago | Izumo | Yonago | |
| January | 0 | 0 | 8° | 8° | 132 | 132 | 15° | 15° |
| February | 6 | 6 | 9° | 9° | 108 | 108 | 14° | 13° |
| March | 22 | 16 | 12° | 11° | 124 | 124 | 13° | 13° |
| April | 45 | 44 | 16° | 16° | 116 | 116 | 16° | 15° |
| May | 65 | 65 | 21° | 21° | 124 | 124 | 19° | 19° |
| June | 61 | 60 | 25° | 25° | 182 | 182 | 22° | 23° |
| July | 61 | 60 | 28° | 28° | 221 | 221 | 26° | 26° |
| August | 65 | 64 | 30° | 30° | 125 | 125 | 28° | 29° |
| September | 61 | 60 | 26° | 26° | 204 | 204 | 28° | 28° |
| October | 63 | 62 | 21° | 21° | 138 | 138 | 23° | 23° |
| November | 45 | 45 | 16° | 16° | 111 | 111 | 21° | 20° |
| December | 10 | 10 | 10° | 10° | 153 | 153 | 17° | 16° |
The sunnier month by month: Jan even · Feb even · Mar Izumo · Apr even · May even · Jun even · Jul even · Aug even · Sep even · Oct even · Nov even · Dec even.
When to pick which
- November–February: too close to call — Izumo averages 15/100, Yonago 15/100. Daytime highs are similar (11°C vs 11°C). See the winter sun ranking.
- March–May: too close to call — Izumo averages 44/100, Yonago 42/100. Daytime highs are similar (16°C vs 16°C).
- June–August: too close to call — Izumo averages 62/100, Yonago 61/100. Daytime highs are similar (28°C vs 28°C).
- September–October: too close to call — Izumo averages 62/100, Yonago 61/100. Daytime highs are similar (24°C vs 24°C).
Sea temperature
Yonago's sea gets warmer: 29°C / 84°F at its peak vs 28°C. Swimmable water (21°C+): Izumo about 6 months a year, Yonago about 5 months a year. Month-by-month sea temperatures are in the table above.
Full month-by-month guides: Izumo weather by month · Yonago weather by month · Best time to visit Japan.
More comparisons: Izumo vs Hiroshima · Izumo vs Okayama · Izumo vs Tottori · Yonago vs Okayama · Yonago vs Tottori · all head-to-heads