Climate twins of Sullivan's Island, SC
These are the US cities whose 12-month climate pattern most closely matches Sullivan's 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: Sullivan's Island vs its climate twin
Top match: Bath, NC
| Month | Sullivan's Island | Bath | ||||
|---|---|---|---|---|---|---|
| High | Low | Precip | High | Low | Precip | |
| January | 59.2°F | 36.5°F | 3.81 in | 53.4°F | 36.2°F | 3.90 in |
| February | 61.4°F | 39.0°F | 3.30 in | 55.6°F | 38.3°F | 3.41 in |
| March | 67.1°F | 44.7°F | 3.49 in | 62.2°F | 44.2°F | 3.75 in |
| April | 74.8°F | 53.5°F | 3.59 in | 71.8°F | 52.7°F | 3.54 in |
| May | 82.2°F | 63.2°F | 3.33 in | 78.5°F | 61.9°F | 3.97 in |
| June | 87.9°F | 69.9°F | 5.36 in | 85.6°F | 69.9°F | 5.12 in |
| July | 91.1°F | 73.0°F | 5.97 in | 88.9°F | 73.8°F | 5.24 in |
| August | 90.0°F | 72.0°F | 6.72 in | 87.0°F | 72.7°F | 5.92 in |
| September | 85.9°F | 67.7°F | 5.47 in | 81.9°F | 68.0°F | 5.90 in |
| October | 78.3°F | 57.5°F | 3.94 in | 73.4°F | 57.0°F | 4.01 in |
| November | 69.2°F | 47.0°F | 3.00 in | 63.8°F | 47.5°F | 3.12 in |
| December | 62.1°F | 39.8°F | 3.62 in | 56.3°F | 39.8°F | 3.68 in |
Cities that consider Sullivan's Island their climate twin
These US cities have Sullivan's Island in their top 3 most-similar list — meaning if you were to move from any of these places, Sullivan's Island would feel familiar.
- Bellville, GA (ranks Sullivan's Island #1)
- Claxton, GA (ranks Sullivan's Island #1)
- Daisy, GA (ranks Sullivan's Island #1)
- Glennville, GA (ranks Sullivan's Island #1)
- Hagan, GA (ranks Sullivan's Island #1)
- Manassas, GA (ranks Sullivan's Island #1)
- Reidsville, GA (ranks Sullivan's Island #1)
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 →