Water temperature in Washington DC (DC) in May
Is it warm enough to swim in Washington DC in May? Average water temperature in Washington DC in May is 64.6°F and therefore is not suitable for comfortable swimming. The warmest water in Washington DC in May is 77°F, and the coldest is 53.6°F. To find out the water temperature today and in the coming days, go to Current water temperature in Washington DC
Changes water temperature in Washington DC in May 2025, 2024
To get an accurate forecast for the water temperature in Washington DC for any chosen month, compare two years within a 10 year range using the chart below.
You can choose any other years:
| Day | 2025 | 2024 |
|---|---|---|
| May 1 | 69.8°F | 69.8°F |
| May 2 | 71.6°F | 69.8°F |
| May 3 | 71.6°F | 69.8°F |
| May 4 | 71.6°F | 68°F |
| May 5 | 69.8°F | 68°F |
| May 6 | 69.8°F | 68°F |
| May 7 | 68°F | 68°F |
| May 8 | 66.2°F | 66.2°F |
| May 9 | 66.2°F | 64.4°F |
| May 10 | 66.2°F | 66.2°F |
| May 11 | 66.2°F | 64.4°F |
| May 12 | 66.2°F | 64.4°F |
| May 13 | 66.2°F | 62.6°F |
| May 14 | 68°F | 60.8°F |
| May 15 | 71.6°F | 62.6°F |
| Day | 2025 | 2024 |
|---|---|---|
| May 16 | 71.6°F | 62.6°F |
| May 17 | 71.6°F | 62.6°F |
| May 18 | 71.6°F | 66.2°F |
| May 19 | 69.8°F | 66.2°F |
| May 20 | 68°F | 68°F |
| May 21 | 66.2°F | 69.8°F |
| May 22 | 64.4°F | 69.8°F |
| May 23 | 62.6°F | 71.6°F |
| May 24 | 62.6°F | 73.4°F |
| May 25 | 62.6°F | 75.2°F |
| May 26 | 62.6°F | 77°F |
| May 27 | 62.6°F | 77°F |
| May 28 | 64.4°F | 73.4°F |
| May 29 | 64.4°F | 71.6°F |
| May 30 | 64.4°F | 71.6°F |
| May 31 | 64.4°F | 69.8°F |
Washington DC water temperature during other months:
You can also view information about water temperature for other months by clicking on the month button below
