Kagawa has a warm temperate climate with warm summers and mild winters.
Kagawa has an average annual temperature of 15.6°C across all 16 cities, with approximately 1487 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 Utazu with average July highs of 29.3°C, while Mannō is the coldest with average January lows of 0.1°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 | 🌤️ | 8.1°C | 5.0°C | 1.9°C | 20.3°C | -5.8°C | 78% | 52 | 3.4 | 2.30 |
| February | 🌤️ | 9.0°C | 5.5°C | 2.0°C | 20.0°C | -8.4°C | 77% | 66 | 3.3 | 3.00 |
| March | ⛅ | 12.8°C | 8.6°C | 4.5°C | 22.7°C | -5.0°C | 76% | 106 | 3.1 | 4.00 |
| April | ⛅ | 17.8°C | 13.4°C | 9.0°C | 26.2°C | -2.1°C | 76% | 119 | 2.6 | 5.00 |
| May | 🌧️ | 21.9°C | 17.8°C | 13.6°C | 31.5°C | 4.2°C | 78% | 152 | 2.2 | 5.40 |
| June | 🌧️ | 25.3°C | 21.8°C | 18.3°C | 33.4°C | 10.1°C | 81% | 209 | 1.9 | 5.00 |
| July | 🌧️ | 28.9°C | 25.8°C | 22.8°C | 35.5°C | 14.3°C | 83% | 200 | 1.9 | 5.20 |
| August | ⛅ | 30.1°C | 27.0°C | 23.9°C | 37.3°C | 15.9°C | 81% | 145 | 2.1 | 5.30 |
| September | 🌧️ | 26.9°C | 23.8°C | 20.6°C | 36.3°C | 9.0°C | 80% | 191 | 2.4 | 4.10 |
| October | ⛅ | 21.5°C | 18.1°C | 14.7°C | 29.3°C | 4.0°C | 78% | 120 | 2.6 | 3.50 |
| November | 🌤️ | 16.1°C | 12.7°C | 9.3°C | 25.5°C | -0.5°C | 78% | 75 | 2.7 | 2.60 |
| December | 🌤️ | 10.7°C | 7.4°C | 4.2°C | 22.6°C | -4.8°C | 79% | 53 | 3.1 | 2.20 |
Showing average climate conditions across 45 years (1981–2025) · averaged across all 16 cities in Kagawa
🧥 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 16 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 83% in July · annual avg 79%
Monthly averages · 1981–2025
Across 45 years, Kagawa's temperature shows a slight warming trend over the past decade. 2024 was the warmest year overall and 1984 the coolest.
The warmest year on record was 2024 (avg: 16.8°C), while the coldest year was 1984 (avg: 14.5°C).
Averaged across all 16 cities in Kagawa · Last 30 years · °C
Averaged across all 16 cities in Kagawa · Last 30 years · mm/year
🔥 hottest · ❄️ coldest · 🌧️ wettest
ℹ️ Values are averages across all 16 cities in Kagawa for each year.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall (mm) | Avg Humidity | Avg Wind |
|---|---|---|---|---|---|---|---|---|
2025 | 19.8°C | 16.4°C | 12.9°C | 35.4°C | -4.7°C | 1598 | 79% | 2.4 m/s |
2024 🔥 | 20.1°C | 16.8°C | 13.4°C | 33.9°C | -3.3°C | 1905 | 81% | 2.4 m/s |
2023 | 19.9°C | 16.5°C | 13.0°C | 34.0°C | -5.8°C | 1899 | 79% | 2.3 m/s |
2022 | 19.5°C | 16.0°C | 12.4°C | 33.9°C | -3.8°C | 1192 | 78% | 2.4 m/s |
2021 | 19.4°C | 15.9°C | 12.4°C | 33.4°C | -4.6°C | 1847 | 80% | 2.5 m/s |
2020 | 19.5°C | 16.0°C | 12.5°C | 33.7°C | -2.3°C | 1712 | 79% | 2.5 m/s |
2019 | 19.6°C | 16.1°C | 12.5°C | 33.5°C | -1.8°C | 1422 | 79% | 2.4 m/s |
2018 | 19.2°C | 15.7°C | 12.2°C | 34.5°C | -4.7°C | 1984 | 80% | 2.4 m/s |
2017 | 18.8°C | 15.4°C | 11.9°C | 33.1°C | -2.7°C | 1567 | 79% | 2.5 m/s |
2016 | 19.6°C | 16.2°C | 12.8°C | 33.5°C | -5.4°C | 1830 | 80% | 2.4 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.
