Saikai Climate by Month
Saikai, Nagasaki, Japan
Warm summers and cool winters, with rain spread through the year.
Warm summers and cool winters, with rain spread through the year: that's Saikai's climate in short. August is the warmest month, with highs around 86°F (30°C); January is the coolest at 48°F (9°C), and nights dip to 36°F (2°C). About 80 in (2037 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 86°F(30°C)
- Average high, August
- Coldest nights
- 36°F(2°C)
- Average low, January
- Rain per year
- 80 in(2037 mm)
- No clear rainy season
- Humidity
- 73%
- Sunniest: August
Best and worst months in Saikai
Best for weatherThe most comfortable weather comes in October, with highs around 72°F (22°C) and about 4.1 in (103 mm) of rain a month.
Least pleasantJanuary and July are the least pleasant; July is the wettest, with 14 in (346 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)
Saikai weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 48°F(9°C) | 36°F(2°C) | 2.9 in(74 mm) | 67% | 2.1 |
| FebFebruary | 49°F(10°C) | 37°F(3°C) | 3.5 in(89 mm) | 63% | 2.8 |
| MarMarch | 56°F(13°C) | 42°F(6°C) | 5.3 in(135 mm) | 68% | 3.9 |
| AprApril | 64°F(18°C) | 50°F(10°C) | 6.5 in(165 mm) | 70% | 4.5 |
| MayMay | 71°F(22°C) | 58°F(14°C) | 7.1 in(181 mm) | 73% | 5.1 |
| JunJune | 76°F(25°C) | 65°F(18°C) | 14 in(351 mm) | 82% | 4.5 |
| JulJuly | 83°F(28°C) | 73°F(23°C) | 14 in(346 mm) | 86% | 4.9 |
| AugAugust | 86°F(30°C) | 74°F(24°C) | 8.3 in(212 mm) | 80% | 5.2 |
| SepSeptember | 80°F(27°C) | 68°F(20°C) | 7.9 in(201 mm) | 77% | 4.3 |
| OctOctoberBest | 72°F(22°C) | 58°F(15°C) | 4.1 in(103 mm) | 71% | 3.6 |
| NovNovember | 62°F(17°C) | 49°F(9°C) | 3.9 in(100 mm) | 74% | 2.6 |
| DecDecember | 52°F(11°C) | 39°F(4°C) | 3.1 in(80 mm) | 67% | 2.0 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
Places with a similar climate
All 20 places like Saikai →- 🇯🇵YokkaichiOita, Japan · Pop. 53k99%matchSame winter lowsSame sunshineSaikai vs Yokkaichi →
- 🇯🇵HagiYamaguchi, Japan · Pop. 45k99%matchSame summer highsSame winter lowsSaikai vs Hagi →
- 🇯🇵GotōNagasaki, Japan · Pop. 34k99%matchSame summer highsSame humiditySaikai vs Gotō →
- 🇰🇷Jeju CityJeju-do, South Korea · Pop. 489k99%matchSame winter lowsSame summer highsSaikai vs Jeju City →
- 🇯🇵ShikokuchūōEhime, Japan · Pop. 83k99%matchSame winter lowsSame humiditySaikai vs Shikokuchūō →