Karuizawa vs Okinawa: which is better, month by month
Okinawa beats Karuizawa in 6 of 12 months — its lead peaks in February (67 vs 54) — while Karuizawa wins May to June; they are within 3 points in the other 4 months.
Each place is scored under the lens that suits its type — they are different kinds of destination, so the scores are each place at its own best. Comfort is SeasonMap's 0–100 estimate from ERA5 climate normals, not a forecast.
Karuizawa vs Okinawa — all 12 months
| Month | Karuizawa | Okinawa | Winner | Gap |
|---|---|---|---|---|
| January | 51Dfreezing, a little rain, clean air | 62Cnice, rainy | Okinawa | 11 |
| February | 54Dfreezing, a little rain, clean air | 67Cnice, rainy | Okinawa | 13 |
| March | 63Ccold, rainy, reliable snow | 71Bnice, rainy | Okinawa | 8 |
| April | 73Bcool, rainy | 76Bwarm, rainy, muggy air | Tie | 3 |
| May | 79Bnice, rainy, muggy air | 72Bhot, soaked, muggy air | Karuizawa | 7 |
| June | 77Bnice, soaked, muggy air | 70Bhot, soaked, clean air | Karuizawa | 7 |
| July | 71Bhot, soaked, clean air | 79Bsweltering, soaked, clean air | Okinawa | 8 |
| August | 75Bhot, soaked, clean air | 77Bsweltering, soaked, clean air | Tie | 2 |
| September | 78Bnice, soaked, clean air | 75Bsweltering, soaked, clean air | Tie | 3 |
| October | 66Ccool, soaked, clean air | 78Bhot, rainy, clean air | Okinawa | 12 |
| November | 69Ccold, a little rain, clean air | 73Bwarm, rainy, clean air | Okinawa | 4 |
| December | 58Dcold, a little rain, clean air | 60Cnice, soaked, clean air | Tie | 2 |
A month is a tie when the two are within 3 points. The widest gap is February (54 vs 67). Tap a month for that month's temperature, rain, humidity and air quality side by side.