Ski resort · Japan
Best time to visit Itoigawa Seaside Valley
The colour shows how good it gets. Tap a card to see that kind of trip at its best time of year; your own preferences stay as they are.
The ski season in Itoigawa Seaside Valley typically runs January and February, when there is snow on the ground and it is cold enough. For a visit without snow, the best time is June, with daytime temperatures around 22°C.
Itoigawa Seaside Valley at a glance: warmest in August with daytime temperatures around 28°C and coolest in January (2°C). The wettest month is July (231 mm) and the driest April (99 mm), with about 1,840 mm of rain a year. The sea is warmest in August (28°C). Sunniest in April.
Itoigawa Seaside Valley
670 mThe climate in Itoigawa Seaside Valley through the year
When to go
No month in Itoigawa Seaside Valley reaches a good score (65 or more) with the default preferences. June comes closest with 52 out of 100. A typical June day reaches 22°C and the night falls to 14°C, with rain on about 18 days and clear sky 23 % of the time. May and September are a fair alternative, with scores of 51–51. The lowest score is in February (14), when days are cool at around 3°C.
Seasons and rain
The seasons are sharply different: a August day (28°C) is about 26 degrees warmer than a January day (2°C). Nights typically drop below freezing in December–March. Precipitation is spread evenly over the year, from 99 mm in April to 231 mm in July (about 1,840 mm in all). Snow typically lies on the ground in December–March, deepest in February (about 90 cm).
Sea and daylight
The sea is 22°C or warmer in July–October, peaking at 28°C in August. It is coldest in March (10°C). Daylight lasts from about 9.5 hours in December to 14.5 hours in June.
By type of trip
The best months change with what you want to do. Each of Eddigo’s trip types has its own preferred daytime temperature and its own weights for rain, humidity and sun. Itoigawa Seaside Valley scores 65 or more in these months:
- Cooler weather (10–20 °C): April–June and October–November, up to 81
- Skiing: snow cover and cold enough in January and February
How it compares
Of the 191 destinations Eddigo covers in Japan, Itoigawa Seaside Valley is the 94th coolest over the year and the 32nd wettest. In June, when Itoigawa Seaside Valley scores 52, Lotte Arai Resort (26 km away) scores 52 and Hakuba (27 km away) scores 50. See where to go in June for the best destinations that month.
Month by month
| Month | Score | Day | Night | Sea | Rain | Wet days (≥ 1 mm) | Sun | Daylight | Feels like |
|---|---|---|---|---|---|---|---|---|---|
| January | 15 | 2° | −5° | 13° | 164 mm | 22 | 29 % | 10 h | Cold and snowy · ski conditions |
| February | 14 | 3° | −5° | 11° | 104 mm | 18 | 28 % | 11 h | Cold and snowy · ski conditions |
| March | 15 | 7° | −3° | 10° | 115 mm | 19 | 30 % | 12 h | Chilly and rainy |
| April | 31 | 14° | 3° | 12° | 99 mm | 14 | 41 % | 13 h | Mild and showery |
| May | 51 | 19° | 9° | 15° | 109 mm | 15 | 35 % | 14 h | Pleasantly warm and rainy |
| June | 52 | 22° | 14° | 20° | 158 mm | 16 | 23 % | 15 h | Pleasantly warm, rainy and grey |
| July | 45 | 26° | 19° | 25° | 231 mm | 20 | 18 % | 14 h | Warm, rainy and grey |
| August | 47 | 28° | 20° | 28° | 176 mm | 19 | 32 % | 14 h | Warm and rainy |
| September | 51 | 23° | 16° | 26° | 197 mm | 18 | 24 % | 12 h | Pleasantly warm, rainy and grey |
| October | 41 | 18° | 10° | 22° | 155 mm | 16 | 27 % | 11 h | Mild and rainy |
| November | 17 | 12° | 3° | 19° | 145 mm | 18 | 36 % | 10 h | Chilly and rainy |
| December | 16 | 5° | −2° | 15° | 188 mm | 25 | 35 % | 10 h | Cold and snowy |
The score (0–100) is calculated from a range of variables, and changes with your preferences.
Climate averages 2016–2025 (ERA5, CRU TS). Sea temperature from ERA5. Not a forecast. Elevation: 665 m. Coordinates: 36.94, 137.90.