Current Lake Conditions

Real-time water, weather, and fishing conditions for Lake Nacimiento, Lake San Antonio, Lopez Lake, and Santa Margarita Lake.

Get up-to-date lake conditions before you head out. RGS Fishing Guide Service tracks current water levels, temperatures, wind, ramp access, and fishing activity across the Central Coast.

Lake Nacimiento

SLO County / Monterey County

Air Temp

66°F

Estimated Water Temp

66°F

Daily mean (modeled)

Wind

3 mph ENE

Barometer

29.23 inHg

Reservoir Elevation

750.1 ft

Capacity

55%

Lake Naciemiento

6:17 pm, Sep 3, 2026

77°F

Humidity: 49 %

Pressure: 1015 mb

Wind: 10 mph

Wind Gust: 24 mph

Clouds: 36%

Visibility: 6 mi

Sunrise: 6:16 am

Sunset: 7:43 pm

• Temperature
• Precipitation
• Rain Chance
• Wind
• Humidity
• Pressure

7:00 pm

70°/75°°F 0 mm 8% 9 mph 59% 1016 mb 0 cm

12:00 am

66°/67°°F 0 mm 15% 13 mph 78% 1014 mb 0 cm

3:00 am

66°/69°°F 0 mm 24% 16 mph 82% 1012 mb 0 cm

6:00 am

68°/69°°F 0.24 mm 39% 16 mph 79% 1011 mb 0 cm

9:00 am

64°/67°°F 0.46 mm 44% 11 mph 84% 1013 mb 0 cm

12:00 pm

64°/70°°F 0.07 mm 21% 12 mph 64% 1014 mb 0 cm

3:00 pm

71°/71°°F 0 mm 10% 13 mph 38% 1014 mb 0 cm

6:00 pm

66°/70°°F 0 mm 10% 11 mph 43% 1016 mb 0 cm

Lake San Antonio

SLO County / Monterey County

Air Temp

66°F

Estimated Water Temp

65°F

Daily mean (modeled)

Wind

2 mph ESE

Barometer

28.80 inHg

Reservoir Elevation

740.9 ft

Capacity

66%

Lake San Antonio

10:17 am, Sep 3, 2026

67°F

Sunny

Humidity: 52 %

Pressure: 1015 hPa

Wind: 2 mph

Wind Gust: 8 mph

Clouds: 0%

Visibility: 6 mi

Sunrise: 6:37 am

Sunset: 7:28 pm

• Temperature
• Precipitation
• Rain Chance
• Wind
• Humidity
• Pressure

11:00 am

73°/82°°F 0 mm 1% 2 mph 37% 1013 hPa 0 cm

2:00 pm

76°/80°°F 0 mm 0% 9 mph 28% 1011 hPa 0 cm

5:00 pm

66°/74°°F 0 mm 2% 7 mph 43% 1011 hPa 0 cm

8:00 pm

60°/62°°F 0 mm 9% 4 mph 80% 1013 hPa 0 cm

12:00 am

58°/58°°F 0 mm 14% 1 mph 92% 1012 hPa 0 cm

3:00 am

57°/57°°F 0 mm 17% 1 mph 95% 1012 hPa 0 cm

6:00 am

56°/58°°F 0 mm 19% 1 mph 91% 1014 hPa 0 cm

9:00 am

63°/73°°F 0.01 mm 6% 1 mph 58% 1013 hPa 0 cm

Lake Lopez

Arroyo Grande / SLO County

Air Temp

73°F

Estimated Water Temp

63°F

Daily mean (modeled)

Wind

7 mph W

Barometer

29.01 inHg

Reservoir Elevation

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Capacity

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Lake Lopez

10:17 am, Sep 3, 2026

69°F

Smoky haze

Humidity: 56 %

Pressure: 1014 hPa

Wind: 3 mph

Wind Gust: 3 mph

Clouds: 1%

Visibility: 6 mi

Sunrise: 6:36 am

Sunset: 7:26 pm

• Temperature
• Precipitation
• Rain Chance
• Wind
• Humidity
• Pressure

11:00 am

75°/79°°F 0 mm 1% 6 mph 46% 1013 hPa 0 cm

2:00 pm

74°/77°°F 0 mm 1% 9 mph 36% 1012 hPa 0 cm

5:00 pm

64°/72°°F 0 mm 2% 6 mph 45% 1012 hPa 0 cm

8:00 pm

57°/60°°F 0 mm 11% 3 mph 84% 1013 hPa 0 cm

12:00 am

56°/56°°F 0 mm 21% 2 mph 96% 1013 hPa 0 cm

3:00 am

57°/57°°F 0 mm 20% 2 mph 95% 1013 hPa 0 cm

6:00 am

57°/60°°F 0 mm 16% 1 mph 90% 1013 hPa 0 cm

9:00 am

65°/72°°F 0 mm 5% 4 mph 58% 1013 hPa 0 cm

Santa Margarita Lake

Central Coast

Air Temp

63°F

Estimated Water Temp

58°F

Daily mean (modeled)

Wind

6 mph NE

Barometer

27.96 inHg

Reservoir Elevation

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Capacity

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Santa Margarita Lake

10:17 am, Sep 3, 2026

68°F

Smoky haze

Humidity: 43 %

Pressure: 1014 hPa

Wind: 3 mph

Wind Gust: 3 mph

Clouds: 1%

Visibility: 6 mi

Sunrise: 6:35 am

Sunset: 7:26 pm

• Temperature
• Precipitation
• Rain Chance
• Wind
• Humidity
• Pressure

11:00 am

73°/79°°F 0 mm 1% 6 mph 36% 1013 hPa 0 cm

2:00 pm

71°/74°°F 0 mm 1% 9 mph 36% 1012 hPa 0 cm

5:00 pm

61°/69°°F 0 mm 2% 6 mph 45% 1012 hPa 0 cm

8:00 pm

59°/61°°F 0 mm 11% 3 mph 84% 1013 hPa 0 cm

12:00 am

58°/59°°F 0 mm 21% 2 mph 96% 1013 hPa 0 cm

3:00 am

60°/60°°F 0 mm 20% 2 mph 95% 1013 hPa 0 cm

6:00 am

57°/61°°F 0 mm 16% 1 mph 90% 1013 hPa 0 cm

9:00 am

62°/69°°F 0 mm 5% 4 mph 58% 1013 hPa 0 cm