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Official National Weather Service (NWS) point forecast and real-time wind conditions for Lake Hartwell (Georgia). 24-hour hour-by-hour wind timelines, peak gusts, watercraft recreation safety thresholds, and 7-day marine outlook.
Today: High 71°F · Low 64°F
Peak gusts: 21 mph · Lake surface chop expected
Humidity: 85% · Barometer: 29.96 inHg
USGS water monitoring available for Lake Hartwell.
Fair for boating (73/100), from 4 available inputs. Supporting this: No active official alerts for this lake. 1% chance of precipitation. Not available from a verified source for this lake: visibility and conditions, verified water access. Confidence is moderate (84%) because some inputs are unavailable or older than ideal.
Good for fishing (81/100), from 5 available inputs. Supporting this: Sky is partly cloudy (37% cloud cover). 1% chance of precipitation. Not available from a verified source for this lake: pressure trend, water temperature. Confidence is moderate (74%) because some inputs are unavailable or older than ideal.
Fair for kayaking (72/100), from 5 available inputs. Supporting this: No active official alerts for this lake. 1% chance of precipitation. Confidence is high (90%).
Water temperature is not available from a verified source for this lake. No swimming score is shown without it. Supporting this: No active official alerts for this lake. 1% chance of precipitation. Not available from a verified source for this lake: water temperature.
| Time | Air Temp | Wind (mph) | Direction | Peak Gusts | Rain Chance | Sky & Conditions |
|---|---|---|---|---|---|---|
| 4 PM | 70°F | 16 mph | W | ⚡ 24 mph | 1% | Mostly Sunny |
| 5 PM | 70°F | 15 mph | W | ⚡ 23 mph | 1% | Mostly Sunny |
| 6 PM | 70°F | 15 mph | W | ⚡ 22 mph | 1% | Partly Cloudy |
| 7 PM | 71°F | 15 mph | W | ⚡ 22 mph | 1% | Partly Cloudy |
| 8 PM | 69°F | 15 mph | W | ⚡ 22 mph | 1% | Mostly Clear |
| 9 PM | 68°F | 15 mph | W | ⚡ 21 mph | 1% | Clear |
| 10 PM | 68°F | 15 mph | W | ⚡ 21 mph | 1% | Clear |
| 11 PM | 68°F | 14 mph | W | ⚡ 20 mph | 1% | Clear |
| 12 AM | 67°F | 14 mph | W | ⚡ 20 mph | 2% | Clear |
| 1 AM | 66°F | 14 mph | W | ⚡ 20 mph | 2% | Clear |
| 2 AM | 66°F | 13 mph | W | ⚡ 18 mph | 2% | Clear |
| 3 AM | 66°F | 13 mph | W | ⚡ 18 mph | 2% | Clear |
| 4 AM | 65°F | 12 mph | W | ⚡ 17 mph | 1% | Clear |
| 5 AM | 65°F | 12 mph | W | ⚡ 16 mph | 1% | Clear |
| 6 AM | 65°F | 10 mph | W | ⚡ 15 mph | 1% | Sunny |
| 7 AM | 64°F | 9 mph | W | ⚡ 14 mph | 1% | Sunny |
| 8 AM | 64°F | 9 mph | W | ⚡ 13 mph | 0% | Sunny |
| 9 AM | 66°F | 8 mph | W | ⚡ 13 mph | 0% | Sunny |
| 10 AM | 70°F | 8 mph | NW | ⚡ 13 mph | 0% | Sunny |
| 11 AM | 73°F | 8 mph | NW | ⚡ 12 mph | 0% | Sunny |
| 12 PM | 75°F | 8 mph | NW | ⚡ 13 mph | 0% | Sunny |
| 1 PM | 77°F | 8 mph | NW | ⚡ 13 mph | 0% | Sunny |
| 2 PM | 80°F | 8 mph | NW | ⚡ 13 mph | 0% | Sunny |
| 3 PM | 81°F | 7 mph | NW | ⚡ 13 mph | 0% | Sunny |
Mirror-like to gentle rippled water. Optimal conditions for paddleboarding, kayaking, swimming, and beginner water skiing or wakeboarding.
Pleasant breeze with small wavelets. Great for sailing, pleasure cruising, pontoon boats, and trolling for trout and bass.
Moderate waves with whitecaps likely. Requires skilled boat handling; kayaks, canoes, and stand-up paddleboards should stay close to sheltered bays.
Steep waves, cold spray, and hazardous open water. Avoid small craft voyages. Always check official National Weather Service lake wind advisories.
Mostly sunny, with a high near 71. West southwest wind around 16 mph, with gusts as high as 24 mph.
Mostly clear, with a low around 64. West wind 12 to 15 mph, with gusts as high as 22 mph.
Sunny, with a high near 82. West northwest wind 5 to 10 mph.
Mostly clear, with a low around 60. Northwest wind around 3 mph.
Sunny, with a high near 82. West wind 1 to 5 mph.
Clear, with a low around 62.
Sunny, with a high near 84.
Clear, with a low around 65.
Sunny, with a high near 85.
Mostly clear, with a low around 66.
Sunny, with a high near 84.
Mostly clear, with a low around 57.
Sunny, with a high near 68.
Mostly clear, with a low around 46.
Lake Hartwell currently reports 68°F with wind velocity near 11 mph from the W. Atmospheric forecasts and 24-hour hour-by-hour wind timelines are updated hourly from the National Weather Service gridpoint matching the lake's coordinates.
At Lake Hartwell and surrounding mountain valleys, diurnal heating of the surrounding terrain causes strong thermal pressure differentials known locally as afternoon breezes (such as the Washoe Zephyr at Lake Tahoe). Wind speeds typically peak between 1:00 PM and 5:00 PM before calming near sunset.
For stand-up paddleboarding (SUP), canoeing, and light kayaks, winds under 7 mph (light breeze) offer the safest, glassiest surface conditions. Between 8–14 mph, small wavelets develop, suitable for sailboats and powerboats. Winds exceeding 15 mph create steep whitecaps and rapid drift; winds over 21 mph warrant small craft warnings.
All weather and wind telemetry is fetched directly from the National Weather Service (NOAA - WFO GSP) high-resolution numerical point-forecast API. LakeRadar uses the official gridpoint for Lake Hartwell without artificial smoothing or third-party estimates.
Yes. Live hydrological sensor readings, 30-day elevation histories, full-pool benchmarks, and USGS station provenance are available on our dedicated Lake Hartwell Water Level & Temperature page.
View Lake Hartwell Water Level & Temperature →