Itoigawa Climate by Month
Itoigawa, Niigata, Japan
Hot summers and cold winters, with rain spread through the year.
Hot summers and cold winters, with rain spread through the year: that's Itoigawa's climate in short. Expect highs of 86°F (30°C) in August and 42°F (5°C) in January, with the coldest nights (February) near 29°F (-1°C). About 79 in (2012 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 86°F(30°C)
- Average high, August
- Coldest nights
- 29°F(-1°C)
- Average low, February
- Rain per year
- 79 in(2012 mm)
- No clear rainy season
- Humidity
- 74%
- Sunniest: August
Best and worst months in Itoigawa
Best for weatherMay and June are the best time for weather in Itoigawa: highs near 73°F (23°C) and about 4.3 in (108 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; January is the coldest, with highs of only 42°F (5°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in June.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Itoigawa weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 42°F(5°C) | 30°F(-1°C) | 10 in(257 mm) | 71% | 1.8 |
| FebFebruary | 42°F(6°C) | 29°F(-1°C) | 6.3 in(160 mm) | 71% | 2.6 |
| MarMarch | 49°F(9°C) | 33°F(1°C) | 5.3 in(134 mm) | 68% | 3.6 |
| AprApril | 62°F(17°C) | 44°F(7°C) | 3.9 in(100 mm) | 66% | 4.5 |
| MayMayBest | 70°F(21°C) | 53°F(12°C) | 3.5 in(90 mm) | 69% | 5.1 |
| JunJuneBest | 76°F(24°C) | 62°F(17°C) | 5.0 in(126 mm) | 79% | 4.8 |
| JulJuly | 83°F(28°C) | 70°F(21°C) | 6.9 in(176 mm) | 78% | 4.8 |
| AugAugust | 86°F(30°C) | 72°F(22°C) | 5.0 in(126 mm) | 77% | 5.1 |
| SepSeptember | 78°F(26°C) | 65°F(18°C) | 7.4 in(187 mm) | 76% | 3.7 |
| OctOctober | 68°F(20°C) | 53°F(12°C) | 6.9 in(174 mm) | 77% | 2.9 |
| NovNovember | 58°F(15°C) | 43°F(6°C) | 8.0 in(203 mm) | 72% | 2.1 |
| DecDecember | 47°F(9°C) | 34°F(1°C) | 11 in(279 mm) | 82% | 1.6 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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