Home › Compare › Karuizawa vs Breckenridge
Karuizawa vs Breckenridge
Comparing Karuizawa change · Breckenridge change
Karuizawa is the warmer of the two — about 9°C on the annual average; Karuizawa is the wetter, with 282 mm more rain a year, and Breckenridge the sunnier.
How the seasons compare
The differences between Karuizawa and Breckenridge, in everyday terms.
Summers
Karuizawa has much hotter summers
Karuizawa: Warm
Breckenridge: Mild
Winters
Karuizawa has much milder winters
Karuizawa: Very cold
Breckenridge: Bitterly cold
Rain & snow
Karuizawa is wetter
Karuizawa: Moderate rainfall
Breckenridge: Moderate rainfall
Sky
Breckenridge is sunnier
Karuizawa: Often cloudy
Breckenridge: Partly cloudy
Month-by-month charts
Temperature
Karuizawa is the warmer of the two — about 9°C on the annual average.
Precipitation
Karuizawa is the wetter — about 282 mm more across the year.
Clear skies
Breckenridge 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 (°C) Karuizawa runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Karuizawa | 2 | 4 | 8 | 15 | 20 | 23 | 27 | 28 | 23 | 17 | 12 | 6 |
| Breckenridge | -2 | -0 | 4 | 7 | 12 | 18 | 21 | 19 | 16 | 9 | 3 | -2 |
| Difference | -4 | -4 | -4 | -8 | -8 | -5 | -6 | -8 | -8 | -8 | -9 | -8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Karuizawa | 2 | 4 | 8 | 15 | 20 | 23 |
| Breckenridge | -2 | -0 | 4 | 7 | 12 | 18 |
| Difference | -4 | -4 | -4 | -8 | -8 | -5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Karuizawa | 27 | 28 | 23 | 17 | 12 | 6 |
| Breckenridge | 21 | 19 | 16 | 9 | 3 | -2 |
| Difference | -6 | -8 | -8 | -8 | -9 | -8 |
Avg low (°C) Karuizawa runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Karuizawa | -7 | -7 | -4 | 2 | 8 | 13 | 17 | 18 | 13 | 7 | 1 | -4 |
| Breckenridge | -16 | -15 | -12 | -9 | -4 | 0 | 4 | 3 | -1 | -6 | -12 | -16 |
| Difference | -8 | -8 | -9 | -10 | -11 | -12 | -13 | -15 | -14 | -12 | -12 | -12 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Karuizawa | -7 | -7 | -4 | 2 | 8 | 13 |
| Breckenridge | -16 | -15 | -12 | -9 | -4 | 0 |
| Difference | -8 | -8 | -9 | -10 | -11 | -12 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Karuizawa | 17 | 18 | 13 | 7 | 1 | -4 |
| Breckenridge | 4 | 3 | -1 | -6 | -12 | -16 |
| Difference | -13 | -15 | -14 | -12 | -12 | -12 |
Precipitation (mm) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Karuizawa | 32 | 33 | 61 | 62 | 87 | 120 | 156 | 122 | 146 | 118 | 47 | 28 |
| Breckenridge | 75 | 73 | 79 | 92 | 62 | 29 | 45 | 56 | 41 | 51 | 65 | 64 |
| Difference | +43 | +40 | +18 | +30 | -25 | -91 | -112 | -67 | -105 | -68 | +19 | +36 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Karuizawa | 32 | 33 | 61 | 62 | 87 | 120 |
| Breckenridge | 75 | 73 | 79 | 92 | 62 | 29 |
| Difference | +43 | +40 | +18 | +30 | -25 | -91 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Karuizawa | 156 | 122 | 146 | 118 | 47 | 28 |
| Breckenridge | 45 | 56 | 41 | 51 | 65 | 64 |
| Difference | -112 | -67 | -105 | -68 | +19 | +36 |
Snowfall (cm) Breckenridge runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Karuizawa | 44 | 38 | 33 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 19 |
| Breckenridge | 112 | 104 | 110 | 117 | 51 | 7 | 1 | 0 | 11 | 55 | 85 | 93 |
| Difference | +68 | +66 | +77 | +112 | +51 | +7 | +1 | — | +11 | +55 | +84 | +74 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Karuizawa | 44 | 38 | 33 | 5 | 0 | 0 |
| Breckenridge | 112 | 104 | 110 | 117 | 51 | 7 |
| Difference | +68 | +66 | +77 | +112 | +51 | +7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Karuizawa | 0 | 0 | 0 | 0 | 1 | 19 |
| Breckenridge | 1 | 0 | 11 | 55 | 85 | 93 |
| Difference | +1 | — | +11 | +55 | +84 | +74 |
Cloud cover (%) Karuizawa runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Karuizawa | 63 | 64 | 65 | 65 | 69 | 81 | 79 | 70 | 75 | 70 | 62 | 61 |
| Breckenridge | 58 | 64 | 64 | 69 | 66 | 50 | 55 | 58 | 48 | 51 | 55 | 59 |
| Difference | -5 | — | -1 | +4 | -3 | -31 | -24 | -12 | -27 | -19 | -7 | -2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Karuizawa | 63 | 64 | 65 | 65 | 69 | 81 |
| Breckenridge | 58 | 64 | 64 | 69 | 66 | 50 |
| Difference | -5 | — | -1 | +4 | -3 | -31 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Karuizawa | 79 | 70 | 75 | 70 | 62 | 61 |
| Breckenridge | 55 | 58 | 48 | 51 | 55 | 59 |
| Difference | -24 | -12 | -27 | -19 | -7 | -2 |
Relative humidity (%) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Karuizawa | 90 | 87 | 82 | 76 | 75 | 79 | 81 | 81 | 83 | 84 | 85 | 88 |
| Breckenridge | 92 | 94 | 90 | 77 | 66 | 54 | 56 | 60 | 57 | 63 | 77 | 89 |
| Difference | +2 | +7 | +8 | +1 | -8 | -25 | -25 | -21 | -26 | -21 | -9 | +1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Karuizawa | 90 | 87 | 82 | 76 | 75 | 79 |
| Breckenridge | 92 | 94 | 90 | 77 | 66 | 54 |
| Difference | +2 | +7 | +8 | +1 | -8 | -25 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Karuizawa | 81 | 81 | 83 | 84 | 85 | 88 |
| Breckenridge | 56 | 60 | 57 | 63 | 77 | 89 |
| Difference | -25 | -21 | -26 | -21 | -9 | +1 |
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. Karuizawa trends → · Breckenridge trends →
Methodology & sources
Karuizawa
Temperature & precipitation — the official 1991–2020 climate normals from the Japan Meteorological Agency, measured at Tomi, about 23 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.
Breckenridge
Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at Copper Mountain, a weather station, about 11 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.
← change Karuizawa · change Breckenridge → · Karuizawa page · Breckenridge page