Yamaguchi Climate by Month
Yamaguchi, Japan
Hot summers and cool winters, with rain spread through the year.
Yamaguchi has hot summers and cool winters, with rain spread through the year. Afternoon highs range from 48°F (9°C) in January to 88°F (31°C) in August, and January nights average 34°F (1°C). It gets 70 in (1779 mm) of rain a year, spread across the months.
- Warmest month
- 88°F(31°C)
- Average high, August
- Coldest nights
- 34°F(1°C)
- Average low, January
- Rain per year
- 70 in(1779 mm)
- No clear rainy season
- Humidity
- 69%
- Sunniest: May
Best and worst months in Yamaguchi
Best for weatherOctober is the best time for weather in Yamaguchi: highs near 73°F (23°C) and about 4.3 in (108 mm) of rain a month.
Least pleasantJanuary and July are the least pleasant; July is the wettest, with 12 in (298 mm) of rain.
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 October.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Yamaguchi weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 48°F(9°C) | 34°F(1°C) | 2.8 in(71 mm) | 69% | 2.1 |
| FebFebruary | 50°F(10°C) | 35°F(2°C) | 3.1 in(80 mm) | 65% | 2.7 |
| MarMarch | 56°F(14°C) | 40°F(4°C) | 5.3 in(135 mm) | 61% | 3.7 |
| AprApril | 65°F(19°C) | 48°F(9°C) | 6.7 in(169 mm) | 63% | 4.6 |
| MayMay | 73°F(23°C) | 57°F(14°C) | 6.7 in(171 mm) | 66% | 5.1 |
| JunJune | 79°F(26°C) | 66°F(19°C) | 10 in(264 mm) | 74% | 4.5 |
| JulJuly | 85°F(30°C) | 73°F(23°C) | 12 in(298 mm) | 76% | 4.8 |
| AugAugust | 88°F(31°C) | 75°F(24°C) | 5.7 in(145 mm) | 74% | 4.9 |
| SepSeptember | 82°F(28°C) | 67°F(20°C) | 7.4 in(187 mm) | 72% | 4.0 |
| OctOctoberBest | 73°F(23°C) | 56°F(14°C) | 4.3 in(108 mm) | 68% | 3.3 |
| NovNovember | 62°F(17°C) | 46°F(8°C) | 3.2 in(81 mm) | 69% | 2.4 |
| DecDecember | 53°F(11°C) | 37°F(3°C) | 2.8 in(70 mm) | 70% | 1.9 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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