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Narita, Japan climate
Cfa Humid subtropical
Narita has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 87°F, while the coldest is January averaging around 28°F at night. Precipitation totals about 59 inches a year and is strongly seasonal — October alone averages 10.1 inches while January barely receives 2.51 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)Narita climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 49 | 51 | 57 | 65 | 73 | 77 | 84 | 87 | 81 | 71 | 62 | 54 |
| Avg temp (°F) | 39 | 41 | 47 | 55 | 64 | 70 | 76 | 79 | 73 | 63 | 54 | 44 |
| Avg low (°F) | 28 | 31 | 37 | 45 | 55 | 63 | 70 | 72 | 67 | 56 | 44 | 33 |
| Precipitation (in) | 2.5 | 2.7 | 4.0 | 4.9 | 5.1 | 5.7 | 4.6 | 4.8 | 7.7 | 10.1 | 4.2 | 2.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 49 | 51 | 57 | 65 | 73 | 77 |
| Avg temp (°F) | 39 | 41 | 47 | 55 | 64 | 70 |
| Avg low (°F) | 28 | 31 | 37 | 45 | 55 | 63 |
| Precipitation (in) | 2.5 | 2.7 | 4.0 | 4.9 | 5.1 | 5.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 84 | 87 | 81 | 71 | 62 | 54 |
| Avg temp (°F) | 76 | 79 | 73 | 63 | 54 | 44 |
| Avg low (°F) | 70 | 72 | 67 | 56 | 44 | 33 |
| Precipitation (in) | 4.6 | 4.8 | 7.7 | 10.1 | 4.2 | 2.7 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 61 | 65 | 70 | 69 | 72 | 81 | 74 | 60 | 71 | 72 | 68 | 62 |
| Relative humidity (%) | 73 | 72 | 73 | 76 | 79 | 84 | 85 | 83 | 82 | 80 | 77 | 75 |
| Wind speed (mph) | 9.6 | 9.8 | 9.9 | 9.5 | 8.6 | 7.5 | 7.4 | 7.2 | 8.3 | 8.6 | 8.3 | 9.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 61 | 65 | 70 | 69 | 72 | 81 |
| Relative humidity (%) | 73 | 72 | 73 | 76 | 79 | 84 |
| Wind speed (mph) | 9.6 | 9.8 | 9.9 | 9.5 | 8.6 | 7.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 74 | 60 | 71 | 72 | 68 | 62 |
| Relative humidity (%) | 85 | 83 | 82 | 80 | 77 | 75 |
| Wind speed (mph) | 7.4 | 7.2 | 8.3 | 8.6 | 8.3 | 9.0 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Narita, about 7 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.