Oregon: water temperature

At sea, 12.0 °C on average across 9 stations, from 10.9 °C (South Beach, OR) to 14.7 °C (Longview, WA). In fresh water, 10.0 °C on average across 206 stations, from 2.8 °C (Miller Creek Near Beaver Marsh, OR) to 16.8 °C (Middle Santiam R Blw Green Peter Dam Nr Foster, OR).

See on the map

Sea and ocean

Lakes and rivers

Where to swim, month by month

The normal sea temperature each month along the coast: pick a month to see where the water is warmest and whether you can swim.

• January 10.4 °C · up to 10.8 °C
• February 10.2 °C · up to 10.6 °C
• March 10.1 °C · up to 10.6 °C
• April 10.4 °C · up to 10.6 °C
• May 12.1 °C · up to 12.7 °C
• June 13.1 °C · up to 14.0 °C
• July 13.6 °C · up to 15.2 °C
• August 14.4 °C · up to 16.2 °C
• September 14.1 °C · up to 16.1 °C
• October 13.6 °C · up to 14.5 °C
• November 12.2 °C · up to 12.7 °C
• December 11.1 °C · up to 11.5 °C

Warmest water today

Where these numbers come from

Every value is a real reading from an instrument, at its position: a buoy, a wharf, a river or lake station. It keeps the time it was measured. A reading too far from those of nearby stations is marked with a “?”. Between stations, the map gives a satellite or model estimate, always labelled as such.

Sources: Bouées de houle CDIP, NOAA CO-OPS, NOAA NDBC, USGS, eaux des États-Unis. Sources and credits

Nearby

• Washington 92 stations · sea 11.8 °C · fresh water 9.5 °C
• Idaho 23 stations · fresh water 9.6 °C
• Nevada 12 stations · fresh water 12.9 °C
• California 191 stations · sea 19.5 °C · fresh water 13.8 °C
• Utah 23 stations · fresh water 10.7 °C
• Montana 56 stations · fresh water 7.1 °C