Monthly New Castle water temperature chart
The bar chart below shows the average monthly sea temperatures at New Castle over the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 5.2 | 3.8 | 3.6 | 5.7 | 8.5 | 13.3 | 17.3 | 18.6 | 16.6 | 13.2 | 9.9 | 7.6 |
| °F | 41.4 | 38.8 | 38.5 | 42.3 | 47.3 | 55.9 | 63.1 | 65.5 | 61.9 | 55.8 | 49.8 | 45.7 |
Monthly average max / min water temperatures
The graph below shows the range of monthly water temperatures over several years.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min °C | 3.8 | 2.4 | 2.1 | 3.7 | 5.2 | 10.2 | 14.9 | 16.9 | 14.3 | 9.8 | 8.3 | 5.7 |
| Max °C | 6.7 | 5.2 | 5.1 | 7.8 | 11.8 | 16.4 | 19.7 | 20.4 | 18.9 | 16.7 | 11.5 | 9.6 |
| Min °F | 40 | 37.4 | 37 | 40.3 | 44 | 52.8 | 60.7 | 63.8 | 59.6 | 52.4 | 48.2 | 43.8 |
| Max °F | 42.9 | 40.2 | 40 | 44.4 | 50.6 | 59 | 65.5 | 67.3 | 64.2 | 59.3 | 51.4 | 47.7 |