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Sapporo, Japan climate
Dfa Hot-summer humid continental
Sapporo has a strongly seasonal cool-temperate climate (Hot-summer humid continental, Köppen Dfa). The hottest month is August with an average daily high near 80°F, while the coldest is January averaging around 20°F at night. Around 45 inches of precipitation falls each year, peaking in September (5.6 inches) and easing off in April (2.1 inches).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Sapporo climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 31 | 33 | 40 | 53 | 64 | 71 | 78 | 80 | 73 | 62 | 48 | 36 |
| Avg temp (°F) | 26 | 27 | 34 | 45 | 55 | 63 | 70 | 72 | 65 | 54 | 41 | 30 |
| Avg low (°F) | 20 | 21 | 28 | 38 | 48 | 56 | 64 | 66 | 59 | 46 | 35 | 25 |
| Precipitation (in) | 4.3 | 3.6 | 3.1 | 2.2 | 2.2 | 2.4 | 3.6 | 5.0 | 5.6 | 4.3 | 4.5 | 4.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 31 | 33 | 40 | 53 | 64 | 71 |
| Avg temp (°F) | 26 | 27 | 34 | 45 | 55 | 63 |
| Avg low (°F) | 20 | 21 | 28 | 38 | 48 | 56 |
| Precipitation (in) | 4.3 | 3.6 | 3.1 | 2.2 | 2.2 | 2.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 78 | 80 | 73 | 62 | 48 | 36 |
| Avg temp (°F) | 70 | 72 | 65 | 54 | 41 | 30 |
| Avg low (°F) | 64 | 66 | 59 | 46 | 35 | 25 |
| Precipitation (in) | 3.6 | 5.0 | 5.6 | 4.3 | 4.5 | 4.5 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 91 | 86 | 79 | 72 | 71 | 73 | 76 | 73 | 72 | 75 | 86 | 91 |
| Relative humidity (%) | 94 | 92 | 90 | 84 | 82 | 84 | 86 | 86 | 85 | 84 | 88 | 93 |
| Wind speed (mph) | 5.3 | 6.2 | 5.6 | 4.5 | 3.4 | 2.5 | 2.3 | 2.3 | 2.7 | 3.0 | 3.6 | 4.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 91 | 86 | 79 | 72 | 71 | 73 |
| Relative humidity (%) | 94 | 92 | 90 | 84 | 82 | 84 |
| Wind speed (mph) | 5.3 | 6.2 | 5.6 | 4.5 | 3.4 | 2.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 73 | 72 | 75 | 86 | 91 |
| Relative humidity (%) | 86 | 86 | 85 | 84 | 88 | 93 |
| Wind speed (mph) | 2.3 | 2.3 | 2.7 | 3.0 | 3.6 | 4.4 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Sapporo, about 2 km from the city centre.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.