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

54°F

Estimated Water Temp

56°F

Daily mean (modeled)

Wind

3 mph SE

Barometer

29.30 inHg

Reservoir Elevation

774.8 ft

Capacity

78%

Lake Naciemiento

5:18 am, Mar 3, 2026

41°F

Humidity: 100 %

Pressure: 1023 mb

Wind: 4 mph

Wind Gust: 7 mph

Clouds: 100%

Visibility: 6 mi

Sunrise: 6:41 am

Sunset: 5:44 pm

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

6:00 am

45°/46°°F 0 mm 0% 4 mph 93% 1025 mb 0 cm

9:00 am

48°/52°°F 0 mm 0% 7 mph 74% 1027 mb 0 cm

12:00 pm

54°/55°°F 0 mm 0% 8 mph 64% 1028 mb 0 cm

3:00 pm

53°/55°°F 0 mm 0% 8 mph 66% 1028 mb 0 cm

6:00 pm

47°/50°°F 0 mm 0% 7 mph 75% 1029 mb 0 cm

9:00 pm

45°/46°°F 0 mm 0% 7 mph 80% 1030 mb 0 cm

12:00 am

44°/44°°F 0 mm 0% 6 mph 84% 1029 mb 0 cm

3:00 am

43°/44°°F 0 mm 0% 5 mph 88% 1027 mb 0 cm

Lake San Antonio

SLO County / Monterey County

Air Temp

52°F

Estimated Water Temp

55°F

Daily mean (modeled)

Wind

1 mph NW

Barometer

28.85 inHg

Reservoir Elevation

753.4 ft

Capacity

77%

Lake San Antonio

9:18 pm, Mar 2, 2026

57°F

Clear

Humidity: 77 %

Pressure: 1019 hPa

Wind: 5 mph

Wind Gust: 10 mph

Clouds: 0%

Visibility: 10 mi

Sunrise: 6:32 am

Sunset: 6:00 pm

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

12:00 am

49°/51°°F 0 mm 0% 3 mph 83% 1018 hPa 0 cm

3:00 am

47°/48°°F 0 mm 0% 3 mph 84% 1019 hPa 0 cm

6:00 am

46°/48°°F 0 mm 0% 3 mph 85% 1020 hPa 0 cm

9:00 am

50°/59°°F 0 mm 0% 3 mph 89% 1020 hPa 0 cm

12:00 pm

64°/70°°F 0 mm 0% 3 mph 53% 1018 hPa 0 cm

3:00 pm

71°/71°°F 0 mm 0% 1 mph 47% 1016 hPa 0 cm

6:00 pm

61°/69°°F 0 mm 0% 1 mph 58% 1016 hPa 0 cm

9:00 pm

51°/57°°F 0 mm 0% 3 mph 80% 1018 hPa 0 cm

Lake Lopez

Arroyo Grande / SLO County

Air Temp

54°F

Estimated Water Temp

56°F

Daily mean (modeled)

Wind

3 mph N

Barometer

29.07 inHg

Reservoir Elevation

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Capacity

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Lake Lopez

9:18 pm, Mar 2, 2026

55°F

Partly cloudy

Humidity: 93 %

Pressure: 1018 hPa

Wind: 6 mph

Wind Gust: 12 mph

Clouds: 75%

Visibility: 10 mi

Sunrise: 6:30 am

Sunset: 5:59 pm

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

12:00 am

51°/53°°F 0 mm 0% 7 mph 73% 1017 hPa 0 cm

3:00 am

50°/50°°F 0 mm 0% 7 mph 72% 1018 hPa 0 cm

6:00 am

50°/52°°F 0 mm 0% 6 mph 71% 1018 hPa 0 cm

9:00 am

55°/60°°F 0 mm 0% 6 mph 78% 1019 hPa 0 cm

12:00 pm

63°/69°°F 0 mm 0% 5 mph 64% 1018 hPa 0 cm

3:00 pm

69°/70°°F 0 mm 0% 5 mph 59% 1016 hPa 0 cm

6:00 pm

61°/66°°F 0 mm 0% 4 mph 75% 1016 hPa 0 cm

9:00 pm

55°/59°°F 0 mm 0% 4 mph 79% 1017 hPa 0 cm

Santa Margarita Lake

Central Coast

Air Temp

50°F

Estimated Water Temp

51°F

Daily mean (modeled)

Wind

12 mph NNE

Barometer

28.00 inHg

Reservoir Elevation

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Capacity

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Santa Margarita Lake

9:18 pm, Mar 2, 2026

55°F

Partly cloudy

Humidity: 93 %

Pressure: 1018 hPa

Wind: 5 mph

Wind Gust: 10 mph

Clouds: 75%

Visibility: 10 mi

Sunrise: 6:29 am

Sunset: 5:58 pm

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

12:00 am

48°/50°°F 0 mm 0% 6 mph 74% 1017 hPa 0 cm

3:00 am

48°/48°°F 0 mm 0% 6 mph 82% 1018 hPa 0 cm

6:00 am

48°/50°°F 0 mm 0% 6 mph 87% 1019 hPa 0 cm

9:00 am

51°/56°°F 0 mm 0% 9 mph 86% 1020 hPa 0 cm

12:00 pm

58°/64°°F 0 mm 0% 9 mph 67% 1018 hPa 0 cm

3:00 pm

66°/67°°F 0 mm 0% 8 mph 59% 1016 hPa 0 cm

6:00 pm

58°/65°°F 0 mm 0% 6 mph 67% 1016 hPa 0 cm

9:00 pm

53°/56°°F 0 mm 0% 5 mph 78% 1018 hPa 0 cm