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
56°F
55°F
Daily mean (modeled)
10 mph S
29.21 inHg
773.2 ft
76%
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Lake Naciemiento
9:07 am, Apr 21, 2026
temperature icon 48°F
Humidity: 76 %
Pressure: 1025 mb
Wind: 12 mph
Wind Gust: 15 mph
Clouds: 25%
Visibility: 6 mi
Sunrise: 5:52 am
Sunset: 8:07 pm
  • Temperature
  • Precipitation
  • Rain Chance
  • Wind
  • Humidity
  • Pressure
10:00 am
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50°/52°°F 0.07 mm 87% 14 mph 67% 1025 mb 0 cm
1:00 pm
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52°/56°°F 0 mm 26% 14 mph 51% 1025 mb 0 cm
4:00 pm
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52°/55°°F 0 mm 0% 15 mph 53% 1025 mb 0 cm
7:00 pm
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46°/50°°F 0 mm 0% 12 mph 61% 1025 mb 0 cm
12:00 am
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44°/44°°F 0 mm 0% 10 mph 79% 1026 mb 0 cm
3:00 am
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43°/43°°F 0 mm 0% 9 mph 88% 1026 mb 0 cm
6:00 am
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43°/48°°F 0 mm 0% 9 mph 84% 1027 mb 0 cm
9:00 am
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51°/55°°F 0 mm 27% 13 mph 54% 1028 mb 0 cm
Lake San Antonio
SLO County / Monterey County
54°F
54°F
Daily mean (modeled)
10 mph S
28.76 inHg
754.3 ft
77%
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Lake San Antonio
1:07 am, Apr 21, 2026
temperature icon 57°F
Overcast
Humidity: 74 %
Pressure: 1016 hPa
Wind: 3 mph
Wind Gust: 4 mph
Clouds: 100%
Visibility: 10 mi
Sunrise: 6:23 am
Sunset: 7:42 pm
  • Temperature
  • Precipitation
  • Rain Chance
  • Wind
  • Humidity
  • Pressure
2:00 am
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56°/57°°F 0.32 mm 100% 3 mph 90% 1013 hPa 0 cm
5:00 am
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55°/56°°F 4.37 mm 100% 3 mph 96% 1012 hPa 0 cm
8:00 am
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55°/58°°F 0.62 mm 90% 6 mph 90% 1013 hPa 0 cm
11:00 am
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57°/60°°F 0.88 mm 33% 16 mph 79% 1014 hPa 0 cm
2:00 pm
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58°/58°°F 0.47 mm 95% 16 mph 71% 1014 hPa 0 cm
5:00 pm
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51°/57°°F 0.01 mm 51% 12 mph 69% 1015 hPa 0 cm
8:00 pm
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45°/48°°F 0 mm 0% 5 mph 91% 1017 hPa 0 cm
12:00 am
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42°/43°°F 0 mm 0% 2 mph 95% 1020 hPa 0 cm
Lake Lopez
Arroyo Grande / SLO County
53°F
54°F
Daily mean (modeled)
4 mph ESE
29.01 inHg
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Lake Lopez
1:07 am, Apr 21, 2026
temperature icon 58°F
Partly cloudy
Humidity: 75 %
Pressure: 1015 hPa
Wind: 6 mph
Wind Gust: 13 mph
Clouds: 50%
Visibility: 10 mi
Sunrise: 6:22 am
Sunset: 7:40 pm
  • Temperature
  • Precipitation
  • Rain Chance
  • Wind
  • Humidity
  • Pressure
2:00 am
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55°/55°°F 0 mm 0% 6 mph 82% 1013 hPa 0 cm
5:00 am
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55°/55°°F 0.59 mm 100% 1 mph 89% 1013 hPa 0 cm
8:00 am
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55°/57°°F 4.73 mm 100% 4 mph 97% 1014 hPa 0 cm
11:00 am
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59°/60°°F 0.01 mm 23% 13 mph 83% 1015 hPa 0 cm
2:00 pm
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58°/59°°F 0.2 mm 67% 11 mph 78% 1016 hPa 0 cm
5:00 pm
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52°/57°°F 0.04 mm 91% 10 mph 79% 1016 hPa 0 cm
8:00 pm
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46°/49°°F 0.02 mm 68% 3 mph 94% 1018 hPa 0 cm
12:00 am
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45°/46°°F 0.01 mm 74% 3 mph 94% 1020 hPa 0 cm
Santa Margarita Lake
Central Coast
52°F
50°F
Daily mean (modeled)
13 mph S
27.93 inHg
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Santa Margarita Lake
1:07 am, Apr 21, 2026
temperature icon 49°F
Clear
Humidity: 91 %
Pressure: 1015 hPa
Wind: 5 mph
Wind Gust: 9 mph
Clouds: 16%
Visibility: 6 mi
Sunrise: 6:21 am
Sunset: 7:40 pm
  • Temperature
  • Precipitation
  • Rain Chance
  • Wind
  • Humidity
  • Pressure
2:00 am
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49°/50°°F 0 mm 0% 5 mph 93% 1013 hPa 0 cm
5:00 am
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50°/51°°F 0.57 mm 100% 3 mph 95% 1013 hPa 0 cm
8:00 am
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51°/51°°F 3.06 mm 100% 5 mph 98% 1014 hPa 0 cm
11:00 am
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53°/54°°F 0.05 mm 33% 15 mph 88% 1015 hPa 0 cm
2:00 pm
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54°/54°°F 0.12 mm 92% 15 mph 75% 1015 hPa 0 cm
5:00 pm
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49°/53°°F 0.02 mm 69% 14 mph 75% 1015 hPa 0 cm
8:00 pm
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46°/48°°F 0.01 mm 45% 6 mph 94% 1018 hPa 0 cm
12:00 am
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45°/45°°F 0 mm 29% 3 mph 93% 1020 hPa 0 cm