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Boston: water level history
Record1921–2025105 years
Sea level trend2.97 mm/yrNo. 39 of 88
Great diurnal range3.13 mNo. 12
Highest water level4.62 m2018-01-04
Annual mean water level vs. period average (cm)
Bars are relative to the lowest year on record.
Top 10 monthly highest water levels
| Month | Highest (m above MSL) |
|---|---|
| January 2018 | 3.036 |
| February 1978 | 3.016 |
| March 2018 | 2.873 |
| January 2024 | 2.806 |
| January 1987 | 2.741 |
| October 1991 | 2.723 |
| January 1979 | 2.693 |
| December 1992 | 2.689 |
| December 1959 | 2.674 |
| December 2022 | 2.673 |
- 2025
- 2024
- 2023
- 2022
- 2021
- 2020
- 2019
- 2018
- 2017
- 2016
- 2015
- 2014
- 2013
- 2012
- 2011
- 2010
- 2009
- 2008
- 2007
- 2006
- 2005
- 2004
- 2003
- 2002
- 2001
- 2000
- 1999
- 1998
- 1997
- 1996
- 1995
- 1994
- 1993
- 1992
- 1991
- 1990
Times and heights are NOAA astronomical predictions and do not include weather effects. Times are station local time (incl. daylight saving), heights in metres above MLLW. Not for navigation.
About this page
Monthly mean water levels at Boston since 1921. Long-term sea level trend: 2.97 mm per year.