Tottori vs Izumo: which is sunnier?
🇯🇵 Japan vs 🇯🇵 Japan · 116 km apart · long-term climate normals (NASA POWER, 2001–2020)
Izumo is the sunnier overall: about 1,647 hours of sunshine a year to Tottori's 1,544. Izumo has the higher Sunshine Score in 4 of 12 months, Tottori in 1 (7 within 2 points).
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.

At a glance
| Tottori | Izumo | |
|---|---|---|
| Sunshine hours / year | 1,544 | 1,647 |
| Sunniest month | May (64/100) | May (65/100) |
| Nov–Feb average score | 14/100 | 15/100 |
| Jun–Aug average score | 61/100 | 62/100 |
| Rain / year | 1,804 mm | 1,738 mm |
| Warmest sea | 29°C / 84°F | 28°C / 82°F |
| Peak midday UV | 7 (high) | 7 (high) |
Tottori vs Izumo month by month
| Month | Sunshine Score | Day high °C | Rain mm | Sea °C | ||||
|---|---|---|---|---|---|---|---|---|
| Tottori | Izumo | Tottori | Izumo | Tottori | Izumo | Tottori | Izumo | |
| January | 0 | 0 | 7° | 8° | 154 | 132 | 15° | 15° |
| February | 0 | 6 | 8° | 9° | 121 | 108 | 13° | 14° |
| March | 16 | 22 | 11° | 12° | 128 | 124 | 12° | 13° |
| April | 50 | 45 | 17° | 16° | 112 | 116 | 15° | 16° |
| May | 64 | 65 | 22° | 21° | 126 | 124 | 19° | 19° |
| June | 60 | 61 | 25° | 25° | 159 | 182 | 23° | 22° |
| July | 60 | 61 | 29° | 28° | 208 | 221 | 26° | 26° |
| August | 62 | 65 | 30° | 30° | 139 | 125 | 29° | 28° |
| September | 60 | 61 | 26° | 26° | 214 | 204 | 28° | 28° |
| October | 60 | 63 | 21° | 21° | 153 | 138 | 23° | 23° |
| November | 44 | 45 | 16° | 16° | 120 | 111 | 20° | 21° |
| December | 10 | 10 | 10° | 10° | 170 | 153 | 17° | 17° |
The sunnier month by month: Jan even · Feb Izumo · Mar Izumo · Apr Tottori · May even · Jun even · Jul even · Aug Izumo · Sep even · Oct Izumo · Nov even · Dec even.
When to pick which
- November–February: too close to call — Tottori averages 14/100, Izumo 15/100. Daytime highs are similar (10°C vs 11°C). See the winter sun ranking.
- March–May: too close to call — Tottori averages 43/100, Izumo 44/100. Daytime highs are similar (17°C vs 16°C).
- June–August: too close to call — Tottori averages 61/100, Izumo 62/100. Daytime highs are similar (28°C vs 28°C).
- September–October: too close to call — Tottori averages 60/100, Izumo 62/100. Daytime highs are similar (24°C vs 24°C).
Sea temperature
Tottori's sea gets warmer: 29°C / 84°F at its peak vs 28°C. Swimmable water (21°C+): Tottori about 5 months a year, Izumo about 6 months a year. Month-by-month sea temperatures are in the table above.
Full month-by-month guides: Tottori weather by month · Izumo weather by month · Best time to visit Japan.
More comparisons: Tottori vs Okayama · Tottori vs Yonago · Izumo vs Hiroshima · Izumo vs Okayama · Izumo vs Yonago · all head-to-heads