Wakayama has a warm temperate climate with warm summers and mild winters.
Wakayama has an average annual temperature of 16.5°C across all 17 cities, with approximately 1821 mm of annual precipitation and average humidity of 79%. Temperatures peak in August and drop to their lowest in January, while rainfall is highest during summer months.
The warmest city is Minabe with average July highs of 32.2°C, while Minabe is the coldest with average January lows of -5.3°C. Humidity remains high throughout the year creating warm and humid conditions. These seasonal patterns offer comfortable conditions year-round, with warm summers and mild winters.
| Month | 🌤️ | High | Low | Avg | Humid % | Rain (mm) | Wind (m/s) | Solar (kWh/m²) |
|---|---|---|---|---|---|---|---|---|
| January | 🌤️ | 15.6°C | 0.0°C | 7.8°C | 78% | 60 | 3.9 | 2.40 |
| February | 🌤️ | 16.8°C | 0.2°C | 8.5°C | 77% | 76 | 3.9 | 3.10 |
| March | ⛅ | 18.8°C | 1.6°C | 10.2°C | 76% | 130 | 3.7 | 4.00 |
| April | 🌧️ | 22.3°C | 4.8°C | 13.5°C | 76% | 150 | 3.3 | 4.90 |
| May | 🌧️ | 25.3°C | 10.2°C | 17.8°C | 79% | 187 | 2.9 | 5.20 |
| June | 🌧️ | 28.1°C | 15.3°C | 21.7°C | 84% | 245 | 2.6 | 4.80 |
| July | 🌧️ | 31.1°C | 20.3°C | 25.7°C | 86% | 213 | 2.5 | 5.20 |
| August | 🌧️ | 31.8°C | 21.7°C | 26.8°C | 83% | 181 | 2.6 | 5.30 |
| September | 🌧️ | 30.0°C | 17.1°C | 23.5°C | 81% | 244 | 2.9 | 4.10 |
| October | 🌧️ | 26.2°C | 10.9°C | 18.6°C | 78% | 173 | 3.2 | 3.40 |
| November | ⛅ | 22.1°C | 5.9°C | 14.0°C | 77% | 100 | 3.2 | 2.70 |
| December | 🌤️ | 18.2°C | 1.9°C | 10.0°C | 78% | 62 | 3.6 | 2.30 |
Showing average climate conditions across 45 years (1981–2025) · averaged across all 17 cities in Wakayama
🧥 Light layers are sufficient — this Mild Winter stays cool without prolonged hard freezes.
🌤️ Early mornings and evenings are most comfortable during this Hot Summer season.
☔ Heavy Rainfall expected — carry rain gear and plan outdoor activities around these months.
Region-wide monthly averages across 17 cities · 1981–2025 · °C
Temperatures rise steadily from spring, peak in August, and gradually decline through autumn into winter.
These seasonal patterns offer comfortable conditions year-round, with warm summers and mild winters.
Region-wide monthly rainfall · 1981–2025 · mm/month
Monthly averages · 1981–2025
💧 Humidity peaks at 86% in July · annual avg 79%
The warmest year on record was 2024 (avg: 18.0°C), while the coldest year was 1986 (avg: 15.5°C).
Averaged across all 17 cities in Wakayama · Last 10 years · °C
Averaged across all 17 cities in Wakayama · Last 10 years · mm/year
🔥 hottest · ❄️ coldest · 🌧️ wettest
ℹ️ Values are averages across all 17 cities in Wakayama for each year.
| Year | Min Temp | Avg Temp | Max Temp | Rainfall (mm) | Avg Humidity | Avg Wind |
|---|---|---|---|---|---|---|
2025 | 10.3°C | 17.4°C | 24.5°C | 1931 | 80% | 3.1 m/s |
2024 🔥 | 10.8°C | 18.0°C | 25.1°C | 2312 | 81% | 3.0 m/s |
2023 | 10.3°C | 17.5°C | 24.6°C | 2175 | 79% | 3.0 m/s |
2022 | 9.6°C | 16.7°C | 23.7°C | 1652 | 79% | 3.0 m/s |
2021 | 9.8°C | 16.9°C | 23.9°C | 2217 | 80% | 3.2 m/s |
2020 | 10.3°C | 17.2°C | 24.0°C | 2078 | 79% | 3.1 m/s |
2019 | 10.1°C | 17.1°C | 24.0°C | 1904 | 79% | 3.1 m/s |
2018 | 9.3°C | 16.7°C | 24.1°C | 2212 | 80% | 3.1 m/s |
2017 | 9.5°C | 16.5°C | 23.4°C | 1774 | 78% | 3.1 m/s |
2016 | 9.7°C | 17.1°C | 24.5°C | 2032 | 80% | 3.0 m/s |
Showing 1 to 10 of 45 years
All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources), a NASA project providing solar and meteorological data for renewable energy, building efficiency, and agricultural research.
