Swimming in Washington D. C. in september 2025: Average sea temperature in september and tide times in september 2025
Average sea temperature in Washington D. C. in september 2025.
In september, according to seasonal norms, the sea temperature in Washington D. C. is:
Minimum: 72°F
Average: 75°F
Maximum: 77°F
Other useful seasonal weather averages in september:
- Outside temperature: 66°F to 81°F
- Most common weather: "Clear/Sunny"
- The wind blows at 11.8mph
- It rains a total of 4.7in, over 6 day(s).
Should we swim in Washington D. C. in september?
Yes! The water temperature in Washington D. C. in september is pleasant
Swimming in september is pleasant in Washington D. C. and the surrounding area. The sea temperature is 75°F on average (min/max: 72°F/77°F), allowing you to swim for a long time and enjoy water sports.
Note also that in september, the climate is good with an average outside temperature of 74°F, 4.7in of precipitation (over 6 days) and 82.88 % humidity.
Water and normal seasonal temperatures in Washington D. C. in september
| September | |||
| Average sea temperature | 75°F | ||
| Minimum sea temperature | 72°F | ||
| Maximum sea temperature | 77°F | ||
| Average outside temperature | 74°F | ||
| Maximum outside temperature | 83°F | ||
| Minimum outside temperature | 67°F | ||
| Wind speed | 8.1mph | ||
| Wind temperature | 67°F | ||
| Precipitation | 4.7in | ||
| Number of days of rain | 6 jour(s) (19%) | ||
| Humidity | 83% | ||
| Visibility in kilometers | 8.95km | ||
| Cloud cover | 35% | ||
| Our opinion | pleasant swimming |
Chart of the tides in september 2025
Tide times in september 2025 in Washington D. C.
Swim elsewhere in the United States (USA) in september
Swim in the United States (USA) in september: sea temperature by city