Climate twins of Kiawah Island, SC
These are the US cities whose 12-month climate pattern most closely matches Kiawah Island's. Each "twin" must be at least 140 miles away to avoid trivial near-neighbor matches. Similarity is computed across all 24 monthly metrics (12 average temperatures + 12 average precipitations), normalized so temperature and precipitation contribute equally.
Side-by-side: Kiawah Island vs its climate twin
Top match: Nicholls, GA
| Month | Kiawah Island | Nicholls | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 58.0°F | 43.6°F | 2.56 in | 62.6°F | 39.3°F | 3.72 in |
| February | 60.3°F | 46.1°F | 2.56 in | 66.5°F | 42.3°F | 3.37 in |
| March | 65.6°F | 52.0°F | 3.03 in | 72.8°F | 47.5°F | 4.17 in |
| April | 72.3°F | 59.7°F | 2.96 in | 79.7°F | 53.3°F | 2.85 in |
| May | 79.0°F | 68.0°F | 2.58 in | 86.6°F | 61.7°F | 2.78 in |
| June | 84.3°F | 74.2°F | 4.85 in | 91.0°F | 69.0°F | 5.34 in |
| July | 87.5°F | 77.1°F | 5.08 in | 93.2°F | 71.6°F | 5.23 in |
| August | 86.4°F | 76.5°F | 6.11 in | 92.0°F | 71.5°F | 5.37 in |
| September | 82.6°F | 72.5°F | 5.25 in | 87.9°F | 67.1°F | 3.80 in |
| October | 75.6°F | 63.2°F | 4.07 in | 80.3°F | 57.0°F | 2.93 in |
| November | 67.1°F | 53.1°F | 2.30 in | 71.5°F | 46.5°F | 2.21 in |
| December | 60.9°F | 46.8°F | 2.91 in | 64.7°F | 41.7°F | 3.03 in |
How this is computed
Each city is represented by a 24-dimensional vector: 12 monthly average temperatures and 12 monthly average precipitations. Each dimension is z-score normalized across the population of US cities, so that temperature variance and precipitation variance contribute proportionally. Distance between cities is Euclidean. We filter out cities within 2° latitude/longitude (~140 miles) so that "twins" mean climatically similar but geographically distinct — not just the neighboring town. Full methodology →