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Koshigaya (Saitama): temperature and climate normals
Latest18.9 °COct 9, 2026 20:10 JST
24 h max / min25.5 °C / 14.9 °C
Annual mean (normal)15.4 °Crank 261 of 903
Annual precipitation (normal)1,366.9mmrank 597
Altitude3 m
Last 24 hours
Monthly normals: temperature
Monthly precipitation (normal)
Monthly sunshine (normal)
Normals table (1991–2020)
| Month | Mean | Max | Min | ≥30°C | Min<0°C | Precip. | Sun |
|---|---|---|---|---|---|---|---|
| Jan | 4.2 °C | 9.6 °C | -0.5 °C | 0.0days | 18.8days | 50.2mm | 199.6h |
| Feb | 5.2 °C | 10.6 °C | 0.4 °C | 0.0days | 13.9days | 47.5mm | 181.7h |
| Mar | 8.7 °C | 14.1 °C | 3.6 °C | 0.0days | 3.2days | 94.5mm | 185.3h |
| Apr | 13.9 °C | 19.6 °C | 8.7 °C | 0.0days | 0.1days | 109.8mm | 184.0h |
| May | 18.7 °C | 24.1 °C | 14.0 °C | 1.4days | 0.0days | 124.4mm | 182.5h |
| Jun | 22.0 °C | 26.7 °C | 18.2 °C | 6.3days | 0.0days | 144.0mm | 128.9h |
| Jul | 25.9 °C | 30.7 °C | 22.2 °C | 18.8days | 0.0days | 138.0mm | 153.4h |
| Aug | 27.1 °C | 32.1 °C | 23.4 °C | 23.1days | 0.0days | 134.3mm | 180.1h |
| Sep | 23.3 °C | 27.9 °C | 19.7 °C | 9.8days | 0.0days | 197.0mm | 134.7h |
| Oct | 17.5 °C | 22.1 °C | 13.7 °C | 0.5days | 0.0days | 203.4mm | 135.5h |
| Nov | 11.6 °C | 16.6 °C | 7.3 °C | 0.0days | 0.2days | 78.6mm | 153.7h |
| Dec | 6.5 °C | 11.8 °C | 1.8 °C | 0.0days | 9.4days | 50.3mm | 174.5h |
| Year | 15.4 °C | 20.5 °C | 11.0 °C | 59.9days | 45.5days | 1,366.9mm | 1,993.9h |
For reference: latest 18.9 °C; the Oct mean normal is 17.5 °C (one observation vs a monthly mean).
Other stations in Saitama
Normals: JMA 2020 normals (1991–2020 averages). Latest values are observations fetched once a day, not real time.