Mayfair Boat Yard & Marina
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Boat launches near Mayfair Boat Yard & Marina
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Typical flow by month
1966 to 2026
The water at Mayfair Boat Yard & Marina typically runs highest in May, at a median 14 cfs, and lowest in October, at 4.4 cfs. The highest flow on record for any single day is 51 cfs, in 1983.
| Month | Typical (cfs) | Usual range (cfs) | Relative level |
|---|---|---|---|
| January | 8.0 | 4.6 to 13 | |
| February | 11 | 6.8 to 17 | |
| March | 13 | 8.5 to 17 | |
| April | 14 | 9.8 to 17 | |
| May | 14 | 9.9 to 17 | |
| June | 12 | 8.3 to 15 | |
| July | 8.0 | 5.3 to 12 | |
| August | 5.2 | 3.3 to 8.8 | |
| September | 4.5 | 2.2 to 7.8 | |
| October | 4.4 | 2.4 to 7.2 | |
| November | 5.4 | 3.3 to 8.5 | |
| December | 6.7 | 3.7 to 11 |
Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 41 years of record. Statistics published by the US Geological Survey for Herring River at North Harwich, MA (site 01105880). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Current conditions
Waves
3.3 ft @ 6s
Wind
8 kt
Gusts 23 kt
Water
69°F
Air
55°F
Rain chance
5%
Forecast outlook
Forecast from Open-Meteo global models (NOAA & ECMWF). See full conditions →
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