Surf Forecasts:
How big are the waves at Francis Beach today (21 Jul):
- Morning surf: Morning surf (21 Jul, local time) - 3ft (0.9m), 14s period with SSW swell.
- Afternoon surf: Afternoon surf (21 Jul, local time) - 3ft (0.9m), 14s period with SSW swell.
- Evening surf: Evening surf (21 Jul, local time) - 2.5ft (0.7m), 14s period with SW swell.
The current surf forecast for Francis Beach at 2AM is: 0.7m 16s primary swell from a Southwest direction and 0.6m 8s secondary swell from a West-northwest direction (forecast issued at 10:00pm July 20). The wind direction is predicted to be glassy and the swell rating is 2.
| Time (PDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Jul) | 3ft (0.9m) | 14s |
| Afternoon (21 Jul) | 3ft (0.9m) | 14s |
| Evening (21 Jul) | 2.5ft (0.7m) | 14s |
Table - waves today at Francis Beach. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 21°C on Tue afternoon, min 13°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Mon 20 | Tuesday 21 | Wednesday 22 | ||||||||||||||||
8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | |
Swell Height Map |  |  |  |  |  |  |  | |||||||||||
Wave Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SW 14 | SSW 12 | SSW 11 | SSW 10 | SSW 10 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 |
Wave Graph  | ||||||||||||||||||
 kJ | 242 | 295 | 251 | 123 | 290 | 299 | 312 | 316 | 208 | 269 | 186 | 160 | 186 | 242 | 226 | 155 | 200 | 206 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | glassy | cross-on | glassy | cross-on | cross-on | cross-on | cross | cross | cross-off | cross-off | cross-off | cross | cross-on | cross-on | on | cross-on |
High Tide | 5:05AM1.06m | 5:04PM1.67m | 6:50AM1.01m | 5:49PM1.67m | ||||||||||||||
Low Tide | 11:14PM0.40m | 10:29AM0.62m | 00:22AM0.29m | 11:25AM0.80m | ||||||||||||||
 |  |  | | | |  | | | | | |  | | | | | | |
 | — | — | — | 6:03 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — |
 | 8:27 | — | — | — | — | — | — | — | 8:27 | — | — | — | — | — | — | — | 8:25 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 15 | 18 | 16 | 18 | 20 | 21 | 20 | 18 | 18 | 18 | 18 | 17 | 19 | 20 | 18 | 16 | 15 |
Feels °C | 15 | 14 | 18 | 15 | 19 | 20 | 20 | 19 | 17 | 17 | 18 | 18 | 16 | 18 | 19 | 17 | 16 | 15 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SW 14 | SSW 12 | SSW 11 | SSW 10 | SSW 10 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | SSW 8 |
| kJ | 242 | 295 | 251 | 123 | 290 | 299 | 312 | 316 | 208 | 269 | 186 | 160 | 137 | 116 | 141 | 128 | 92 | 85 |
Swell 2 Height (m) Direction Period (s) | WNW 8 | WNW 8 | WNW 8 | WNW 8 | NW 8 | NW 8 | NW 8 | WNW 9 | SSW 12 | SW 16 | SSW 15 | SSW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 |
| kJ | 46 | 46 | 46 | 45 | 33 | 33 | 33 | 30 | 147 | 124 | 148 | 150 | 186 | 242 | 226 | 155 | 200 | 206 |
Swell 3 Height (m) Direction Period (s) | S 12 | S 11 | S 11 | S 11 | W 13 | W 13 | W 13 | W 13 | WNW 9 | WNW 9 | WNW 8 | NW 8 | NW 8 | NW 8 | NW 8 | W 12 | WNW 12 | WNW 12 |
| kJ | 69 | 38 | 37 | 63 | 30 | 30 | 30 | 30 | 30 | 30 | 22 | 16 | 16 | 10 | 10 | 25 | 27 | 26 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | SSE 3 | S 3 | SSW 4 | SSW 4 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 5 | 6 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 40 | 7 | 0 | 7 | 0 | 84 | 153 | 13 | 13 | 13 | 0 | 0 | 40 | 43 | 100 | 84 | 68 | 55 |
Best forecast wave conditions in San Mateo | ||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||
Header Global | ||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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