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Sendai vs Seoul
Comparing Sendai change · Seoul change
Sendai and Seoul have nearly identical year-round temperatures; Seoul is the wetter, with 9 in more rain a year, and Seoul the sunnier.
How the seasons compare
The differences between Sendai and Seoul, in everyday terms.
Summers
Seoul has hotter summers
Sendai: Warm
Seoul: Warm
Winters
Sendai has milder winters
Sendai: Cold
Seoul: Cold
Rain & snow
Seoul is wetter
Sendai: Wet
Seoul: Wet
Sky
Seoul is sunnier
Sendai: Often grey
Seoul: Partly cloudy
Month-by-month charts
Temperature
Sendai and Seoul run remarkably close all year.
Precipitation
Seoul is the wetter — about 9 in more across the year.
Clear skies
Seoul has the clearer skies — the higher line.
Exact monthly numbers
Tap a metric to open its full table. Desktop shows all twelve months; on a phone each metric splits into Jan–Jun and Jul–Dec.
Avg high (°F) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sendai | 42 | 44 | 50 | 60 | 68 | 74 | 80 | 83 | 77 | 68 | 57 | 47 |
| Seoul | 36 | 41 | 52 | 64 | 74 | 82 | 84 | 86 | 79 | 68 | 53 | 39 |
| Difference | -7 | -3 | +2 | +4 | +6 | +8 | +4 | +3 | +2 | +1 | -4 | -8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Sendai | 42 | 44 | 50 | 60 | 68 | 74 |
| Seoul | 36 | 41 | 52 | 64 | 74 | 82 |
| Difference | -7 | -3 | +2 | +4 | +6 | +8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Sendai | 80 | 83 | 77 | 68 | 57 | 47 |
| Seoul | 84 | 86 | 79 | 68 | 53 | 39 |
| Difference | +4 | +3 | +2 | +1 | -4 | -8 |
Avg low (°F) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sendai | 30 | 30 | 35 | 43 | 53 | 61 | 68 | 71 | 64 | 53 | 42 | 34 |
| Seoul | 21 | 25 | 34 | 45 | 56 | 65 | 72 | 73 | 63 | 50 | 37 | 25 |
| Difference | -9 | -5 | — | +2 | +2 | +4 | +3 | +2 | -2 | -4 | -5 | -9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Sendai | 30 | 30 | 35 | 43 | 53 | 61 |
| Seoul | 21 | 25 | 34 | 45 | 56 | 65 |
| Difference | -9 | -5 | — | +2 | +2 | +4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Sendai | 68 | 71 | 64 | 53 | 42 | 34 |
| Seoul | 72 | 73 | 63 | 50 | 37 | 25 |
| Difference | +3 | +2 | -2 | -4 | -5 | -9 |
Precipitation (in) Sendai runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sendai | 1.7 | 1.3 | 2.9 | 3.6 | 4.3 | 5.7 | 7 | 6.2 | 7.6 | 5.9 | 2.3 | 1.7 |
| Seoul | 0.8 | 1.3 | 1.6 | 3 | 4.1 | 5.4 | 17.3 | 14.3 | 6.1 | 2.3 | 2.2 | 1 |
| Difference | -0.8 | -0.1 | -1.3 | -0.6 | -0.3 | -0.2 | +10.3 | +8.1 | -1.5 | -3.6 | -0.1 | -0.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Sendai | 1.7 | 1.3 | 2.9 | 3.6 | 4.3 | 5.7 |
| Seoul | 0.8 | 1.3 | 1.6 | 3 | 4.1 | 5.4 |
| Difference | -0.8 | -0.1 | -1.3 | -0.6 | -0.3 | -0.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Sendai | 7 | 6.2 | 7.6 | 5.9 | 2.3 | 1.7 |
| Seoul | 17.3 | 14.3 | 6.1 | 2.3 | 2.2 | 1 |
| Difference | +10.3 | +8.1 | -1.5 | -3.6 | -0.1 | -0.8 |
Cloud cover (%) Sendai runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sendai | 77 | 75 | 73 | 71 | 71 | 77 | 80 | 71 | 76 | 72 | 74 | 79 |
| Seoul | 51 | 50 | 52 | 55 | 58 | 67 | 75 | 65 | 56 | 46 | 52 | 51 |
| Difference | -26 | -26 | -21 | -16 | -12 | -10 | -5 | -6 | -20 | -27 | -22 | -27 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Sendai | 77 | 75 | 73 | 71 | 71 | 77 |
| Seoul | 51 | 50 | 52 | 55 | 58 | 67 |
| Difference | -26 | -26 | -21 | -16 | -12 | -10 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Sendai | 80 | 71 | 76 | 72 | 74 | 79 |
| Seoul | 75 | 65 | 56 | 46 | 52 | 51 |
| Difference | -5 | -6 | -20 | -27 | -22 | -27 |
Relative humidity (%) Sendai runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sendai | 95 | 93 | 87 | 82 | 81 | 83 | 86 | 85 | 87 | 87 | 89 | 93 |
| Seoul | 76 | 74 | 74 | 74 | 75 | 78 | 85 | 84 | 79 | 75 | 76 | 77 |
| Difference | -18 | -20 | -13 | -7 | -6 | -6 | -1 | -1 | -7 | -12 | -13 | -16 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Sendai | 95 | 93 | 87 | 82 | 81 | 83 |
| Seoul | 76 | 74 | 74 | 74 | 75 | 78 |
| Difference | -18 | -20 | -13 | -7 | -6 | -6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Sendai | 86 | 85 | 87 | 87 | 89 | 93 |
| Seoul | 85 | 84 | 79 | 75 | 76 | 77 |
| Difference | -1 | -1 | -7 | -12 | -13 | -16 |
How both climates are changing
Both cities are warming. Each city has its own warming trend; see its trends page for the year-by-year detail. Sendai trends → · Seoul trends →
Methodology & sources
Sendai
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Sendai, about 3 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.
Seoul
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Seoul City, a weather station, about 1 km from the city centre. The underlying daily records come from NOAA's global station network.
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.