Izumo weather by month & the best time to visit
🇯🇵 Japan · beach resort · humid subtropical climate
The best time to visit Izumo is May — its sunniest month (Sunshine Score 65/100), with August and October close behind. Izumo averages about 1,647 hours of sunshine a year. Daytime highs around 21°C / 70°F and roughly 124 mm of rain in May.
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- Sun hours / year
- 1,647
- Sunniest month
- May
- Peak score
- 65/100
- Rain / year
- 1,738 mm
- Midday UV at peak
- 7 (high)
- Sea at warmest
- 28°C / 82°F
- Population
- 173k
- Elevation
- Sea level

When is the best time to visit Izumo?
For sunshine, the best time to visit Izumo is May, then August and October. The dullest month is January (0/100, 132 mm of rain). The full month-by-month picture is in the table below.
How sunny is Izumo?
Izumo isn't a sunny place by world standards: about 1,647 hours of sunshine a year. 65 Sunshine Score points separate May (65) from January (0), so the month you pick matters. It ranks #56 of 79 destinations in Japan for annual sunshine, below the national median of 1,773 hours. The year's 1,738 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 0 | 8° / 46°F | 5° / 41°F | 132 mm | 2 | 15° / 59°F |
| February | 6 | 9° / 48°F | 5° / 41°F | 108 mm | 2 | 14° / 57°F |
| March | 22 | 12° / 54°F | 7° / 45°F | 124 mm | 4 | 13° / 55°F |
| April | 45 | 16° / 61°F | 11° / 52°F | 116 mm | 5 | 16° / 61°F |
| May | 65 | 21° / 70°F | 15° / 59°F | 124 mm | 6 | 19° / 66°F |
| June | 61 | 25° / 77°F | 20° / 68°F | 182 mm | 6 | 22° / 72°F |
| July | 61 | 28° / 82°F | 24° / 75°F | 221 mm | 7 | 26° / 79°F |
| August | 65 | 30° / 86°F | 25° / 77°F | 125 mm | 7 | 28° / 82°F |
| September | 61 | 26° / 79°F | 22° / 72°F | 204 mm | 6 | 28° / 82°F |
| October | 63 | 21° / 70°F | 17° / 63°F | 138 mm | 4 | 23° / 73°F |
| November | 45 | 16° / 61°F | 12° / 54°F | 111 mm | 2 | 21° / 70°F |
| December | 10 | 10° / 50°F | 7° / 45°F | 153 mm | 1 | 17° / 63°F |
Sea temperature in Izumo by month
The sea off Izumo is warmest in August at around 28°C / 82°F, and coolest in March at 13°C / 55°F. The water sits at a comfortable 21°C or warmer roughly 6 months a year. Month-by-month sea-surface temperatures are in the Sea column of the table above.
See Izumo on the interactive sunshine globe →
Nearby places for sunshine
- Yonago Japan · 33 km · best in May · 1,515 h sun/yr
- Hiroshima Japan · 109 km · best in Oct · 1,773 h sun/yr
- Okayama Japan · 114 km · best in Aug · 1,914 h sun/yr
- Tottori Japan · 116 km · best in May · 1,544 h sun/yr
- Iwakuni Japan · 153 km · best in Oct · 1,773 h sun/yr
- Takamatsu Japan · 168 km · best in May · 1,982 h sun/yr
Nearest destinations
- Okinoshima Japan · 94 km · 1,674 h sun/yr · best in Aug
- Masuda Japan · 129 km · 1,655 h sun/yr · best in Oct
Head-to-head
How Izumo compares month by month: Izumo vs Hiroshima · Izumo vs Okayama · Izumo vs Tottori · Izumo vs Yonago · all comparisons
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