Shūnan Climate by Month
Shūnan, Yamaguchi, Japan
Hot summers and cool winters, with rain spread through the year.
Hot summers and cool winters, with rain spread through the year: that's Shūnan's climate in short. Afternoon highs range from 49°F (9°C) in January to 87°F (31°C) in August, and January nights average 35°F (2°C). About 71 in (1793 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 87°F(31°C)
- Average high, August
- Coldest nights
- 35°F(2°C)
- Average low, January
- Rain per year
- 71 in(1793 mm)
- No clear rainy season
- Humidity
- 70%
- Sunniest: May
Best and worst months in Shūnan
Best for weatherThe most comfortable weather comes in October, with highs around 73°F (23°C) and about 4.6 in (118 mm) of rain a month.
Least pleasantJanuary and July are the least pleasant; July is the wettest, with 12 in (313 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)
Shūnan weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 49°F(9°C) | 35°F(2°C) | 2.2 in(56 mm) | 67% | 2.2 |
| FebFebruary | 50°F(10°C) | 36°F(2°C) | 2.8 in(72 mm) | 64% | 2.9 |
| MarMarch | 56°F(13°C) | 40°F(5°C) | 4.8 in(123 mm) | 69% | 3.8 |
| AprApril | 65°F(18°C) | 49°F(9°C) | 6.9 in(176 mm) | 63% | 4.6 |
| MayMay | 73°F(23°C) | 58°F(14°C) | 7.6 in(194 mm) | 71% | 5.1 |
| JunJune | 78°F(26°C) | 66°F(19°C) | 11 in(268 mm) | 79% | 4.5 |
| JulJuly | 85°F(29°C) | 73°F(23°C) | 12 in(313 mm) | 77% | 4.9 |
| AugAugust | 87°F(31°C) | 75°F(24°C) | 5.1 in(129 mm) | 74% | 5.0 |
| SepSeptember | 81°F(27°C) | 68°F(20°C) | 7.9 in(200 mm) | 75% | 4.0 |
| OctOctoberBest | 73°F(23°C) | 57°F(14°C) | 4.6 in(118 mm) | 71% | 3.4 |
| NovNovember | 63°F(17°C) | 47°F(9°C) | 3.0 in(77 mm) | 67% | 2.5 |
| DecDecember | 53°F(12°C) | 38°F(3°C) | 2.6 in(67 mm) | 68% | 2.0 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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