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Francis Beach surfForecast / CAL – San Mateo / USA

information circle12 Day Weather and Surf, issued 4 am Sunday 17 Aug 2025 PDT
Forecast update in hr  min  s Forecast update imminent
Francis Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Francis Beach sea temperature is
17.1° C
 (Which is 2.6°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Francis Beach this week:

The surf forecast for Francis Beach over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 18) at 2AM. The primary swell is predicted to be 1.0m and 10s period with a secondary swell of 0.4m and 13s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Francis Beach in the next 12 days are 1.6m 8s and forecast to arrive on Friday (Aug 22) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Mon 18th Aug)3.5ft (1.0m) 10s
Best Surf 2AM (Mon 18th Aug)3.5ft (1.0m) 10s
Most Powerful 2AM (Fri 22nd Aug)5ft (1.6m) 8s

Table - best surf conditions forecast for Francis Beach over the next 12 days.

Hourly12 Days
San Mateo Surf
Print Surf Table
Updates in  hr  min  s Forecast update imminent 

Short Range Forecast Mostly dry. Very mild (max 18°C on Mon afternoon, min 12°C on Tue night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Very mild (max 18°C on Thu afternoon, min 12°C on Wed night). Wind will be generally light.

Sunday
17
Monday
18
Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
2
0
0
2
0
0
1
1
0
1
0
0
0
0
1
1
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.1
WNW
1.1
WNW
1
WNW
0.9
WNW
0.6
SW
0.6
SW
0.5
SW
0.5
SW
0.6
SW
0.6
SW
0.6
SW
1.4
WNW
1.3
WNW
1.2
WNW
1.6
WNW
1.3
WNW
1.4
WNW
0.6
SSW
0.6
SSW
0.6
SSW
0.6
SSW
Period(s) (?)111110101716161616151588888816151514
Wave
Graph
(?)Metric surfscale
Energy (?)377421320307352240232210281277279346381338473329533279307318281
Wind
(km/h)
10
W
15
WNW
5
WNW
15
NW
20
NW
5
WNW
15
WNW
20
NW
10
NW
10
WNW
20
NW
10
WNW
10
WNW
20
NW
10
NW
10
WNW
15
WNW
10
WNW
15
WNW
15
WNW
10
WNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
oncross-
on		glasscross-
on		cross-
on		glasscross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		oncross-
on		cross-
on		cross-
on		cross-
on		cross-
on
High Tide
/ height (m)
5:46PM
1.84
8:44AM
1.25
6:53PM
1.86
9:38AM
1.35
7:56PM
1.89
10:21AM
1.42
8:54PM
1.91
11:00AM
1.48
9:46PM
1.90
11:34AM
1.52
10:33PM
1.85
12:05PM
1.55
11:18PM
1.77
Low Tide
/ height (m)
11:36AM
0.97
1:30AM
-0.06
12:56PM
1.01
2:31AM
-0.14
2:06PM
0.97
3:24AM
-0.19
3:05PM
0.89
4:09AM
-0.20
3:57PM
0.79
4:49AM
-0.16
4:43PM
0.70
5:25AM
-0.09
5:28PM
0.62
Sunday
17
Monday
18
Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunrise6:26--6:28--6:28--6:28--6:30--6:31--6:31--
Sunset-7:59--7:58--7:57--7:55--7:53--7:52--7:52-
clearclearclearclearclearclearclearclearclearclearclearpart cloudclearpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudpart cloud
Rain (mm)
---------------------
Temp. °C161715171815161714161713171813161713151613
Feels °C (?)151614151514141513151412161611151511131411
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Eyeball surf reportRecent Eyeball Surf Reports for CAL - San Mateo

  1. weather stationWind Update Continuing clean conditions at Francis Beach (calm at Half Moon Bay wx 2 km from Francis Beach). 1.2m 11s groundswell from the WNW with a 0.4m 12s groundswell from the SSW. 2 swells combining to make bigger set waves.

    50 minutes ago Francis Beach
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Actual: 50 min ago

0 km/h
N
Clean
Please reload the page to see if there are any updates.

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Francis Beach surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Francis Beach at:
surf-forecast.com

Information about the Francis Beach Surf forecast

The above surf forecast table for Francis Beach provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Francis Beach can be found by selecting the local surf guide option on the grey menu. Our Francis Beach surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Francis Beach) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Francis Beach may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Francis Beach is 17 km (11 miles) from Belmont. If you plan a vacation in San Mateo, look for hotels and other accommodation in Belmont. Belmont has rooms for a wide range of budgets as well as car hire and transport links.

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