
Lake Whatcom
Lake Whatcom (from the Lummi word for "loud water") is located in Whatcom County, Washington, United States. It is the drinking water source for approximately 85,000 residents in the city of Bellingham as well as Whatcom County. It is approximately 10 miles (16 km) in length and 1 mile (1.6 km) in width at its widest. Lake Whatcom is located and managed within three political jurisdictions: the city of Bellingham, Whatcom County, and the Lake Whatcom Water and Sewer District. The lake is a popular area for motor boating, swimming, fishing, and other recreational activities.
Read more
Lake Whatcom
Lake Whatcom (from the Lummi word for "loud water") is located in Whatcom County, Washington, United States. It is the drinking water source for approximately 85,000 residents in the city of Bellingham as well as Whatcom County. It is approximately 10 miles (16 km) in length and 1 mile (1.6 km) in width at its widest. Lake Whatcom is located and managed within three political jurisdictions: the city of Bellingham, Whatcom County, and the Lake Whatcom Water and Sewer District. The lake is a popular area for motor boating, swimming, fishing, and other recreational activities.
Read more detailsCurrent Conditions
Water Temperature
Current water temperature for Lake Whatcom is 42°F.
Current Snapshot
Forecast: Wednesday, Apr 30
PartlyCloudy
Hourly Insights
Temperature
Precipitation
Wind
Sun, Moon & UV
Solunar Fishing Forecast
Todays action is rated a 2 (scale is 0 thru 5, 5 is the best)
10:40 PM - 1:10 AM
7:00 AM - 7:00 AM
1:48 PM - 3:18 PM
7:00 AM - 7:00 AM
Outlook for Wednesday at Lake Whatcom
Expect temperatures ranging from 42°F to 60°F. Skies look partly cloudy with little chance of precipitation. Winds will be averaging 4 mph, with potential gusts reaching up to 11 mph. The maximum UV index will be 5 (Moderate), so plan sun protection accordingly. For anglers, today's fishing action is rated 2/5 (Todays action is rated a 2 (scale is 0 thru 5, 5 is the best)). Look for the best bite times during the major periods around 10:40 PM and 7:00 AM, or try the minor windows near 1:48 PM and 7:00 AM for potential early morning or evening action. Check back for the latest conditions and forecasts for Lake Whatcom.
Lake Map Views

Try Premium Features
Find the fishing sweet spots! See detailed temperature readings throughout your lake.
No credit card required for preview
Lake Information
Common Fish Species
Nearby Lakes
Water Temperature History
Trends for Lake Whatcom
Current Temp
Latest recorded surface temperature.
Lowest in Period
32°F
On Apr 6
Coldest point in the Last 12 Months.
Average in Period
48°F
Typical temp during the Last 12 Months.
Temperature Trend: Last 12 Months
Surface temperature over the selected period.
Key Observations (Last 12 Months)
- Warmest avg: July (70°F).
- Coolest avg: February (38°F).
- Rapid warming often occurs: April → May (+11°F).
- Sharpest cooling trend: September → October (-10°F).
Weather Forecast
Wind speed and pressure trends
Hourly Wind Forecast
Wind Direction
149°
Pressure
1023 mb
Cloud Cover
61%
Visibility
15 miles
Daily Pressure Forecast


Frequently Asked Questions About Lake Whatcom
Get accurate, up-to-date information about conditions at Lake Whatcom.