Wakayama has a warm temperate climate with warm summers and mild winters.
Wakayama has an average annual temperature of 16.4°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 Kasagi with average July highs of 28.9°C, while Minabe is the coldest with average January lows of -1.5°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 | 🌤️ | Avg High | Avg Temp | Avg Low | Record High | Record Low | Humid % | Rain (mm) | Wind (m/s) | Solar (kWh/m²) |
|---|---|---|---|---|---|---|---|---|---|---|
| January | 🌤️ | 9.1°C | 6.4°C | 3.7°C | 20.6°C | -7.6°C | 78% | 60 | 3.9 | 2.40 |
| February | 🌤️ | 9.8°C | 6.8°C | 3.8°C | 20.6°C | -9.4°C | 77% | 76 | 3.9 | 3.10 |
| March | ⛅ | 13.2°C | 9.7°C | 6.3°C | 23.1°C | -6.5°C | 76% | 130 | 3.7 | 4.00 |
| April | 🌧️ | 17.7°C | 14.2°C | 10.7°C | 27.7°C | -3.6°C | 76% | 150 | 3.3 | 4.90 |
| May | 🌧️ | 21.5°C | 18.3°C | 15.0°C | 31.7°C | 1.1°C | 79% | 187 | 2.9 | 5.20 |
| June | 🌧️ | 24.6°C | 21.9°C | 19.3°C | 32.9°C | 5.9°C | 84% | 245 | 2.6 | 4.80 |
| July | 🌧️ | 28.0°C | 25.7°C | 23.3°C | 36.8°C | 13.5°C | 86% | 213 | 2.5 | 5.20 |
| August | 🌧️ | 29.3°C | 26.8°C | 24.4°C | 38.5°C | 13.5°C | 83% | 181 | 2.6 | 5.30 |
| September | 🌧️ | 26.7°C | 24.2°C | 21.7°C | 33.9°C | 6.1°C | 81% | 244 | 2.9 | 4.10 |
| October | 🌧️ | 21.8°C | 19.0°C | 16.2°C | 30.2°C | 1.0°C | 78% | 173 | 3.2 | 3.40 |
| November | ⛅ | 16.9°C | 14.0°C | 11.1°C | 26.0°C | -2.6°C | 77% | 100 | 3.2 | 2.70 |
| December | 🌤️ | 11.7°C | 8.9°C | 6.1°C | 22.3°C | -5.4°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.
🌤️ Conditions are ideal for outdoor activities throughout the day in this Mild Summer.
☔ 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
💧 Humidity peaks at 86% in July · annual avg 79%
Monthly averages · 1981–2025
Across 45 years, Wakayama's temperature has remained relatively stable over the past decade. 2024 was the warmest year overall and 1984 the coolest.
The warmest year on record was 2024 (avg: 17.5°C), while the coldest year was 1984 (avg: 15.0°C).
Averaged across all 17 cities in Wakayama · Last 30 years · °C
Averaged across all 17 cities in Wakayama · Last 30 years · mm/year
🔥 hottest · ❄️ coldest · 🌧️ wettest
ℹ️ Values are averages across all 17 cities in Wakayama for each year.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall (mm) | Avg Humidity | Avg Wind |
|---|---|---|---|---|---|---|---|---|
2025 | 20.0°C | 17.3°C | 14.5°C | 34.4°C | -6.5°C | 1931 | 80% | 3.1 m/s |
2024 🔥 | 20.3°C | 17.5°C | 14.7°C | 38.5°C | -4.8°C | 2312 | 81% | 3.0 m/s |
2023 | 19.9°C | 17.2°C | 14.4°C | 35.5°C | -5.8°C | 2175 | 79% | 3.0 m/s |
2022 | 19.6°C | 16.8°C | 14.0°C | 34.0°C | -5.7°C | 1652 | 79% | 3.0 m/s |
2021 | 19.6°C | 16.8°C | 13.9°C | 33.8°C | -6.1°C | 2217 | 80% | 3.2 m/s |
2020 | 19.7°C | 16.9°C | 14.1°C | 34.0°C | -3.4°C | 2078 | 79% | 3.1 m/s |
2019 | 19.6°C | 16.8°C | 14.0°C | 34.2°C | -4.0°C | 1904 | 79% | 3.1 m/s |
2018 | 19.3°C | 16.5°C | 13.7°C | 34.9°C | -6.3°C | 2212 | 80% | 3.1 m/s |
2017 | 19.1°C | 16.3°C | 13.5°C | 33.0°C | -5.6°C | 1774 | 78% | 3.1 m/s |
2016 | 19.9°C | 17.1°C | 14.3°C | 32.8°C | -7.2°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.
