Climate of Sapporo, Japan

Dfb

Köppen-Geiger climate classification: Dfb — Cold, no dry season, warm summer.

Sapporo has a mean annual temperature of 8.9 °C and receives 1316 mm of precipitation per year (1991–2020 climate normals). The warmest month is August with a mean temperature of 21.9 °C, while January is the coldest month at -3.8 °C. Most precipitation falls in September (155 mm); the driest month is April (71 mm).

Climate Diagram

Climate diagram for Sapporo: monthly mean temperature (red line, left axis, °C) and monthly precipitation (blue bars, right axis, mm), 1991–2020 0 0 10 20 20 40 30 60 40 80 50 100 60 120 70 140 80 160 °C mm J F M A M J J A S O N D

Walter–Lieth diagram: blue bars show monthly precipitation (right axis, mm), the red line shows monthly mean temperature (left axis, °C). Scale: 1 °C ≡ 2 mm.

Climate Table

MonthMean temperature (°C)Precipitation (mm)
January-3.8111.2
February-3.193.0
March0.681.8
April6.970.6
May12.576.2
June16.691.2
July20.6128.3
August21.9153.0
September18.4155.4
October12.0112.9
November5.0120.9
December-1.4121.6
Year8.91316.1

Live Forecast

Looking for the current weather instead of climate averages? Open the live forecast diagrams in WZ Diagrams — 15 weather models, ensemble spread, radar and more.

Data Source

Climate normals and Köppen-Geiger classification: Beck et al. (2023), Scientific Data 10, 724, CC BY 4.0. Period 1991–2020. Classification resolution ≈ 1 km; monthly climate data resolution ≈ 1 km (0.01°, Original 2023 release; predates the January 2026 correction), sampled at the grid cell containing the city coordinates (43.06°, 141.35°). Climate normals describe the long-term average, not current weather.