Castletown in March
Find out everything about the water temperature in Castletown in March. Average, minimum and maximum recorded temperatures as well as daily temperature in March for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in March
Minimum:
42.8 °F
Average:
46.3 °F
Maximum:
48.5 °F
Sea water temperature in Castletown in March
In the city of Castletown, the month of March is too cold for swimming. The minimum recorded temperature during this month was 42.8°F on March 9, 2018, with an average temperature being 46.3°F and a maximum temperature reaching 48.5°F on March 21, 2024.
| Date | 10 years average | 2025 | 2024 |
|---|---|---|---|
| Mar 1 | 46.5°F | 46.8°F | 47.0°F |
| Mar 2 | 46.4°F | 47.0°F | 46.9°F |
| Mar 3 | 46.3°F | 46.7°F | 47.0°F |
| Mar 4 | 46.1°F | 46.9°F | 47.2°F |
| Mar 5 | 46.0°F | 46.8°F | 46.8°F |
| Mar 6 | 46.1°F | 47.7°F | 47.0°F |
| Mar 7 | 46.2°F | 47.8°F | 47.1°F |
| Mar 8 | 46.1°F | 47.5°F | 47.3°F |
| Mar 9 | 46.1°F | 47.9°F | 47.5°F |
| Mar 10 | 46.2°F | 48.5°F | 47.0°F |
| Mar 11 | 46.1°F | 48.2°F | 47.0°F |
| Mar 12 | 46.0°F | 47.9°F | 47.0°F |
| Mar 13 | 46.0°F | 47.8°F | 46.8°F |
| Mar 14 | 46.0°F | 47.4°F | 46.7°F |
| Mar 15 | 46.0°F | 47.5°F | 46.5°F |
| Mar 16 | 46.1°F | 47.2°F | 47.3°F |
| Mar 17 | 46.2°F | 47.0°F | 47.2°F |
| Mar 18 | 46.3°F | 47.0°F | 47.4°F |
| Mar 19 | 46.4°F | 47.3°F | 47.7°F |
| Mar 20 | 46.3°F | 47.0°F | 47.5°F |
| Mar 21 | 46.5°F | 47.4°F | 48.5°F |
| Mar 22 | 46.4°F | 47.4°F | 48.2°F |
| Mar 23 | 46.5°F | 47.7°F | 47.9°F |
| Mar 24 | 46.5°F | 47.8°F | 47.9°F |
| Mar 25 | 46.5°F | 47.6°F | 47.8°F |
| Mar 26 | 46.6°F | 47.9°F | 47.7°F |
| Mar 27 | 46.5°F | 47.5°F | 47.6°F |
| Mar 28 | 46.6°F | 48.0°F | 47.7°F |
| Mar 29 | 46.7°F | 47.9°F | 47.8°F |
| Mar 30 | 46.6°F | 48.0°F | 47.8°F |
| Mar 31 | 46.7°F | 48.1°F | 48.1°F |
In an average year, Castletown offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in Castletown was recorded on September 10, 2023, reaching a 61.8°F. While the coldest temperature occurred on March 9, 2018, dipping to 42.8°F. The average readings by season are 49.2°F in Winter, 48.0°F in Spring, 56.8°F in Summer, and 56.8°F in Autumn.
March's temperature is a dip compared to warmer February at 47.1°F and April at 47.5°F.
Popular neighboring cities and resorts
| City | Water temperature* | Distance** |
|---|---|---|
| Douglas |
51.5°F
|
9mi |
| Holyhead |
52.4°F
|
53mi |
| Bangor |
52.0°F
|
62mi |
| Conwy |
53.5°F
|
64mi |
| Caernarfon |
53.9°F
|
66mi |
* current water temperature in this city
** straight line distance from Castletown