Rumson Water Temperature

(Today) 2025

12.3°C / 54.1°F

The water will feel cool (fresh). Probably too cold for all but seasoned swimmers. We'd recommend a 4mm or 5mm wetsuit if you want to stay in the water.

*Live data from Sandy Hook, NJ: 13.6°C / 56.5°F

Current weather

12°C / 53°F
(overcast clouds)
Partly cloudy
Wind
4 mph
Humidity
58%

The measurements for the water temperature in Rumson, New Jersey are provided by the daily satellite readings provided by the NOAA. The temperatures given are the sea surface temperature (SST) which is most relevant to recreational users.

*Live data may vary from satellite readings for a number of reasons. These include local factors, depth of smapling and time of day.

Water temp by month

Monthly average max / min water temperatures

The graph below shows the range of monthly Rumson water temperature derived from many years of historical sea surface temperature data.

Rumson average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Rumson
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 3 2.7 2.6 3.9 7.6 14.2 20.1 21.5 19.2 13.9 10.6 5.7
Max °C 7.8 5.9 6.5 10.7 15.2 21.9 24.4 25.3 23.1 20.5 14.2 11.2
Min °F 39.3 38.1 38.2 41.7 48.7 60.6 69.9 72.2 68.1 59.7 52.5 44.4
Max °F 44.1 41.3 42.1 48.5 56.3 68.3 74.2 76 72 66.3 56.1 49.9

The warmest water temperature is in August with an average around 74.1°F / 23.4°C. The coldest month is February with an average water temperature of 39.7°F / 4.3°C.

7 day tide forecast for Rumson

ThuFriSatSunMonTueWed
  • High 1:13am
    (1.01m)
  • Low 8:16am
    (-0.05m)
  • High 1:57pm
    (0.81m)
  • Low 8:13pm
    (0.04m)
  • High 2:12am
    (0.95m)
  • Low 9:12am
    (0.01m)
  • High 2:57pm
    (0.78m)
  • Low 9:10pm
    (0.11m)
  • High 3:11am
    (0.89m)
  • Low 10:13am
    (0.07m)
  • High 3:57pm
    (0.76m)
  • Low 10:15pm
    (0.17m)
  • High 4:10am
    (0.84m)
  • Low 11:19am
    (0.11m)
  • High 4:54pm
    (0.75m)
  • Low 11:27pm
    (0.2m)
  • High 5:07am
    (0.8m)
  • Low 12:20pm
    (0.12m)
  • High 5:51pm
    (0.76m)
  • Low 12:34am
    (0.2m)
  • High 6:03am
    (0.77m)
  • Low 1:12pm
    (0.11m)
  • High 6:47pm
    (0.78m)
  • Low 1:30am
    (0.18m)
  • High 6:59am
    (0.76m)
  • Low 1:57pm
    (0.09m)
  • High 7:40pm
    (0.81m)
7 day tide times for Rumson

*These tide times are estimates based on the nearest accurate location (Oceanic Bridge, Navesink River, New Jersey) and may differ by up to half an hour depending on distance. Please note, the tide times given are not suitable for navigational purposes.