Water temperature in Phoenix (AZ) in May
Is it warm enough to swim in Phoenix in May? Average water temperature in Phoenix in May is 78.3°F and therefore suitable for comfortable swimming. The warmest water in Phoenix in May is 87.8°F, and the coldest is 68°F. To find out the water temperature today and in the coming days, go to Current water temperature in Phoenix
Changes water temperature in Phoenix in May 2025, 2024
To get an accurate forecast for the water temperature in Phoenix 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 | 68°F | 69.8°F |
| May 2 | 68°F | 69.8°F |
| May 3 | 69.8°F | 71.6°F |
| May 4 | 69.8°F | 71.6°F |
| May 5 | 69.8°F | 71.6°F |
| May 6 | 69.8°F | 68°F |
| May 7 | 69.8°F | 69.8°F |
| May 8 | 71.6°F | 69.8°F |
| May 9 | 71.6°F | 69.8°F |
| May 10 | 71.6°F | 69.8°F |
| May 11 | 71.6°F | 71.6°F |
| May 12 | 71.6°F | 69.8°F |
| May 13 | 71.6°F | 71.6°F |
| May 14 | 69.8°F | 71.6°F |
| May 15 | 69.8°F | 73.4°F |
| Day | 2025 | 2024 |
|---|---|---|
| May 16 | 71.6°F | 71.6°F |
| May 17 | 71.6°F | 71.6°F |
| May 18 | 71.6°F | 73.4°F |
| May 19 | 71.6°F | 73.4°F |
| May 20 | 69.8°F | 71.6°F |
| May 21 | 71.6°F | 71.6°F |
| May 22 | 71.6°F | 71.6°F |
| May 23 | 73.4°F | 73.4°F |
| May 24 | 73.4°F | 73.4°F |
| May 25 | 73.4°F | 73.4°F |
| May 26 | 73.4°F | 71.6°F |
| May 27 | 73.4°F | 73.4°F |
| May 28 | 73.4°F | 75.2°F |
| May 29 | 73.4°F | 75.2°F |
| May 30 | 73.4°F | 75.2°F |
| May 31 | 73.4°F | 75.2°F |
Phoenix water temperature during other months:
You can also view information about water temperature for other months by clicking on the month button below
