Home › Compare › Karuizawa vs Breckenridge
Karuizawa vs Breckenridge
Comparing Karuizawa change · Breckenridge change
Karuizawa is the warmer of the two — about 15°F on the annual average; Karuizawa is the wetter, with 11 in 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 15°F on the annual average.
Precipitation
Karuizawa is the wetter — about 11 in 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 (°F) Karuizawa runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Karuizawa | 36 | 38 | 46 | 58 | 68 | 73 | 80 | 82 | 74 | 63 | 53 | 42 |
| Breckenridge | 29 | 32 | 39 | 45 | 54 | 64 | 70 | 67 | 60 | 48 | 37 | 28 |
| Difference | -8 | -7 | -7 | -14 | -14 | -9 | -10 | -15 | -14 | -15 | -16 | -14 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Karuizawa | 36 | 38 | 46 | 58 | 68 | 73 |
| Breckenridge | 29 | 32 | 39 | 45 | 54 | 64 |
| Difference | -8 | -7 | -7 | -14 | -14 | -9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Karuizawa | 80 | 82 | 74 | 63 | 53 | 42 |
| Breckenridge | 70 | 67 | 60 | 48 | 37 | 28 |
| Difference | -10 | -15 | -14 | -15 | -16 | -14 |
Avg low (°F) Karuizawa runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Karuizawa | 19 | 19 | 26 | 35 | 46 | 55 | 63 | 64 | 56 | 44 | 33 | 24 |
| Breckenridge | 3 | 5 | 10 | 17 | 25 | 33 | 38 | 37 | 31 | 22 | 11 | 3 |
| Difference | -15 | -15 | -15 | -19 | -20 | -22 | -24 | -27 | -25 | -22 | -22 | -21 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Karuizawa | 19 | 19 | 26 | 35 | 46 | 55 |
| Breckenridge | 3 | 5 | 10 | 17 | 25 | 33 |
| Difference | -15 | -15 | -15 | -19 | -20 | -22 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Karuizawa | 63 | 64 | 56 | 44 | 33 | 24 |
| Breckenridge | 38 | 37 | 31 | 22 | 11 | 3 |
| Difference | -24 | -27 | -25 | -22 | -22 | -21 |
Precipitation (in) Varies through the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Karuizawa | 1.3 | 1.3 | 2.4 | 2.4 | 3.4 | 4.7 | 6.2 | 4.8 | 5.8 | 4.7 | 1.8 | 1.1 |
| Breckenridge | 3 | 2.9 | 3.1 | 3.6 | 2.5 | 1.2 | 1.8 | 2.2 | 1.6 | 2 | 2.6 | 2.5 |
| Difference | +1.7 | +1.6 | +0.7 | +1.2 | -1 | -3.6 | -4.4 | -2.6 | -4.1 | -2.7 | +0.7 | +1.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Karuizawa | 1.3 | 1.3 | 2.4 | 2.4 | 3.4 | 4.7 |
| Breckenridge | 3 | 2.9 | 3.1 | 3.6 | 2.5 | 1.2 |
| Difference | +1.7 | +1.6 | +0.7 | +1.2 | -1 | -3.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Karuizawa | 6.2 | 4.8 | 5.8 | 4.7 | 1.8 | 1.1 |
| Breckenridge | 1.8 | 2.2 | 1.6 | 2 | 2.6 | 2.5 |
| Difference | -4.4 | -2.6 | -4.1 | -2.7 | +0.7 | +1.4 |
Snowfall (in) Breckenridge runs higher most of the year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Karuizawa | 17.3 | 15 | 13 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0.4 | 7.5 |
| Breckenridge | 44 | 40.9 | 43.5 | 46.1 | 20.2 | 2.7 | 0.2 | 0.1 | 4.2 | 21.5 | 33.6 | 36.6 |
| Difference | +26.7 | +25.9 | +30.5 | +44.2 | +20.2 | +2.7 | +0.2 | +0.1 | +4.2 | +21.5 | +33.2 | +29.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Karuizawa | 17.3 | 15 | 13 | 2 | 0 | 0 |
| Breckenridge | 44 | 40.9 | 43.5 | 46.1 | 20.2 | 2.7 |
| Difference | +26.7 | +25.9 | +30.5 | +44.2 | +20.2 | +2.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Karuizawa | 0 | 0 | 0 | 0 | 0.4 | 7.5 |
| Breckenridge | 0.2 | 0.1 | 4.2 | 21.5 | 33.6 | 36.6 |
| Difference | +0.2 | +0.1 | +4.2 | +21.5 | +33.2 | +29.1 |
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