Mussel Rock read 03:40 PDT
from the SSE at the cliff meter, 03:39

Mussel Rock paragliding conditions. Daly City, California, Monday 14 September 2026, 03:40 PDT.Night

9mph at the cliff meter
SSEfrom, 163°
14hfirst flyable hour today

Whether Mussel Rock is flyable, hour by hour for the next seven days: the meter on the cliff, four forecast models and one verdict for every daylight hour. Today: fly from 14h to 20h, WNW 10 to 12 mph, 4 of 4 models agree.

See today's hours Book a site intro

Free, no account, refreshed every 10 minutes from the meters on the cliff.

Sunrise 06:51 · sunset 19:18 · high tide 5.9 ft at 14:08 Walker · Lemmings · Tomcat · Coyote · The Perch · Green Monster · The Jungle · Cheetah
N E S W NE SE SW NW Walker, SW to NW Lemmings, SW to NW Tomcat, W to NNW Coyote, SSW to W The Perch, SSW to NW Green Monster, SSW to NNW The Jungle, SW to WSW Cheetah, SSW to W
9mph
from the SSE
the cliff meter at 03:39
Night
  • Walker SW to NW
  • Lemmings SW to NW
  • Tomcat W to NNW
  • Coyote SSW to W
  • The Perch SSW to NW
  • Green Monster SSW to NNW
  • The Jungle SW to WSW
  • Cheetah SSW to W

Point at an hour on the right: the needle turns to its wind and the launches that take it light up. The orange arc is the site's whole window, SSW to NNW.

The next 48 hours

HRRR every hour, the model the pilots' dashboard runs, wind at 10 m over Walker Launch. The line is the mean, the dashes the gusts, the shade the 9 to 19 mph band. Orange dots: the same model corrected against the cliff meter's own history by musselrockwx.com.

  1. 0h
    5
    gusts 7
     
    W, night
  2. 1h
    4
    gusts 4
     
    WSW, night
  3. 2h
    5
    gusts 7
     
    WSW, night
  4. 3h
    5
    gusts 6
     
    WSW, night
  5. 4h
    5
    gusts 8
     
    SW, night
  6. 5h
    6
    gusts 7
     
    SW, night
  7. 6h
    6
    gusts 7
     
    SW, night
  8. 7h
    6
    gusts 7
     
    SW, too light
  9. 8h
    4
    gusts 6
     
    SW, too light
  10. 9h
    5
    gusts 6
     
    WSW, too light
  11. 10h
    6
    gusts 6
     
    W, too light
  12. 11h
    6
    gusts 7
    6 of 8
    W, light, Walker, Lemmings, Coyote, The Perch, Green Monster and Cheetah
  13. 12h
    8
    gusts 9
    7 of 8
    W, light, Walker, Lemmings, Tomcat, Coyote, The Perch, Green Monster and Cheetah
  14. 13h
    9
    gusts 11
    5 of 8
    W, light, Walker, Lemmings, Tomcat, The Perch and Green Monster
  15. 14h
    10
    gusts 13
    5 of 8
    WNW, clean, Walker, Lemmings, Tomcat, The Perch and Green Monster
  16. 15h
    11
    gusts 16
    5 of 8
    WNW, clean, Walker, Lemmings, Tomcat, The Perch and Green Monster
  17. 16h
    12
    gusts 17
    5 of 8
    WNW, clean, Walker, Lemmings, Tomcat, The Perch and Green Monster
  18. 17h
    12
    gusts 17
    5 of 8
    WNW, clean, Walker, Lemmings, Tomcat, The Perch and Green Monster
  19. 18h
    12
    gusts 18
    5 of 8
    WNW, clean, Walker, Lemmings, Tomcat, The Perch and Green Monster
  20. 19h
    12
    gusts 17
    5 of 8
    WNW, clean, Walker, Lemmings, Tomcat, The Perch and Green Monster
  21. 20h
    12
    gusts 18
     
    W, night
  22. 21h
    12
    gusts 17
     
    W, night
  23. 22h
    12
    gusts 17
     
    W, night
  24. 23h
    11
    gusts 16
     
    W, night
  25. 0h
    10
    gusts 15
     
    W, night
  26. 1h
    10
    gusts 15
     
    W, night
  27. 2h
    10
    gusts 15
     
    WNW, night
  28. 3h
    10
    gusts 17
     
    WNW, night
  29. 4h
    9
    gusts 14
     
    W, night
  30. 5h
    10
    gusts 14
     
    W, night
  31. 6h
    10
    gusts 14
     
    W, night
  32. 7h
    9
    gusts 14
    7 of 8
    W, clean, Walker, Lemmings, Tomcat, Coyote, The Perch, Green Monster and Cheetah
  33. 8h
    10
    gusts 13
    6 of 8
    W, clean, Walker, Lemmings, Coyote, The Perch, Green Monster and Cheetah
  34. 9h
    11
    gusts 13
    6 of 8
    W, clean, Walker, Lemmings, Coyote, The Perch, Green Monster and Cheetah
  35. 10h
    11
    gusts 13
    6 of 8
    W, clean, Walker, Lemmings, Coyote, The Perch, Green Monster and Cheetah
  36. 11h
    12
    gusts 14
    6 of 8
    WSW, clean, Walker, Lemmings, Coyote, The Perch, Green Monster and Cheetah
  37. 12h
    13
    gusts 16
    6 of 8
    WSW, clean, Walker, Lemmings, Coyote, The Perch, Green Monster and Cheetah
  38. 13h
    13
    gusts 16
    6 of 8
    WSW, clean, Walker, Lemmings, Coyote, The Perch, Green Monster and Cheetah
  39. 14h
    14
    gusts 17
    6 of 8
    WSW, clean, Walker, Lemmings, Coyote, The Perch, Green Monster and Cheetah
  40. 15h
    15
    gusts 19
    6 of 8
    WSW, clean, Walker, Lemmings, Coyote, The Perch, Green Monster and Cheetah
  41. 16h
    16
    gusts 20
    6 of 8
    WSW, clean, Walker, Lemmings, Coyote, The Perch, Green Monster and Cheetah
  42. 17h
    17
    gusts 22
    6 of 8
    WSW, clean, Walker, Lemmings, Coyote, The Perch, Green Monster and Cheetah
  43. 18h
    15
    gusts 20
    6 of 8
    WSW, clean, Walker, Lemmings, Coyote, The Perch, Green Monster and Cheetah
  44. 19h
    15
    gusts 20
    6 of 8
    W, clean, Walker, Lemmings, Coyote, The Perch, Green Monster and Cheetah
  45. 20h
    14
    gusts 19
     
    WSW, night
  46. 21h
    14
    gusts 19
     
    WSW, night
  47. 22h
    14
    gusts 20
     
    WSW, night
  48. 23h
    14
    gusts 20
     
    SW, night
Mon 14 SepTue 15 Sep

Corrected is Mike Fifield's musselrockwx.com feed: HRRR rescored every hour against what the Mussel Rock station actually read on days like this one. Its error on the cliff wind is 2.6 mph against 3.7 for the raw model at 0 to 12 hours, so where the dots sit under the line, trust the dots.

What the meters read

The cliff station is the one that decides. The others say what is coming: Fort Funston shows the upper wind, Sharp Park the sea-level wind, the buoy the ocean, the airports the deck.

Mussel Rock, Longview Drive

488 ft, cliff top; in rotor when the wind is south
9mphSSE

gusts 11 mph, 55°F, read 1 min ago

Fort Funston

200 ft, the upper wind, 5 km north
10mphSSW

gusts 13 mph, 57°F, read 15 min ago

Sharp Park beach, Pacifica

20 ft, sea level, 4 km south
4mphSW

gusts 6 mph, 57°F, read 20 min ago

Buoy 46026

20 miles off the Golden Gate
13mphNW

waves 5.2 ft, sea 60.1°F, read 30 min ago

Half Moon Bay

the airport METAR, the deck down the coast
0mphcalm

ceiling 900 ft, visibility 4 mi, 10:15 UTC

KSFO

the airport METAR, the deck over the Bay
9mphW

no ceiling, visibility 10+ mi, 10:00 UTC

Tide at the beach

NOAA station 9414290, Golden Gate
1.9ft low 07:40 5.9ft high 14:08

above 5 ft the beach under the cliff is narrow

Daylight

sunrise and sunset at the cliff
06:51to 19:18

the afternoon is when the wind is there: noon to sunset

2.6 mph error of the corrected forecast on the cliff wind, against 3.7 for raw HRRR at 0 to 12 h 4 models voting on each day 1,091 flights logged at Mussel Rock on XContest since 2016

The week

One tile per day: fly, maybe or no, the window, and how many of the models agree. Fly needs two hours in a row inside the arc and the band with no fog on the rock.

  • Today
    14 Sep
    Fly
    14h to 20h
    clean
    4 of 4 models
  • Tuesday
    15 Sep
    Fly
    7h to 20h
    clean
    4 of 4 models
  • Wednesday
    16 Sep
    Fly
    7h to 20h
    clean
    3 of 3 models
  • Thursday
    17 Sep
    Fly
    14h to 20h
    clean
    2 of 3 models
  • Friday
    18 Sep
    Fly
    14h to 20h
    clean
    3 of 3 models
  • Saturday
    19 Sep
    Fly
    7h to 20h
    clean
    3 of 3 models
  • Sunday
    20 Sep
    Fly
    7h to 15h
    clean
    2 of 3 models

The launches

Eight launches on one cliff, each with its own slice of the wind. The arc is drawn on each one; the needle is the wind at the cliff meter right now.

A paraglider soaring the green face of Mussel Rock above the beach
The cliff from the beach, a wing on the ridge lift. Photograph Matthew Keys, CC BY-SA 4.0.

  • Walker230 ft

    The main launch, north of the parking, a 400 m walk. Takes wind from SW to NW.

    not this wind

  • Lemmings200 ft

    Just south of Walker, lower on the cliff. Takes wind from SW to NW.

    not this wind

  • Tomcat260 ft

    The southern launch above the parking. Takes wind from W to NNW.

    not this wind

  • Coyote400 ft

    Above Walker, where the Coyote wind meter stands. Takes wind from SSW to W.

    not this wind

  • The Perch387 ft

    From the back side of Coyote, left of the bench. Takes wind from SSW to NW.

    not this wind

  • Green Monster

    The high green face between Lemmings and Coyote. Takes wind from SSW to NNW.

    not this wind

  • The Jungle

    The brushy launch that only takes a south-west wind. Takes wind from SW to WSW.

    not this wind

  • Cheetah500 ft

    South of the parking, where the Cheetah camera looks WNW. Takes wind from SSW to W.

    not this wind

How the verdict works

Five checks, in the order a pilot makes them on the cliff. Every hour of every model goes through them; a day is the best run of hours that came out clean.

  1. Off the sea

    The wind has to come from between SSW and NNW, 202° to 337°. Anything else is over the back of the ridge or along it, and the launches are in rotor.

  2. In the band

    9 to 19 mph at 10 m reads as fly. 6 to 9 is light and 19 to 22 is strong: both are maybe. Under 6 or over 22 is no. The cliff top reads 5 to 7 mph more than the launches.

  3. No fog on the rock

    Low cloud at 80 % or more with visibility under 3 km is fog on the launch, and the hour is out. A deck above the cliff only makes it maybe.

  4. Gusts and rain

    A gust 10 mph over the mean turns a fly hour into maybe. Showers at 30 % do the same; rain at 50 % or more is no.

  5. Two hours in a row

    A day is fly when two consecutive daylight hours come out fly, maybe when two come out fly or maybe. Every model votes; the tile shows the majority and the count.

Questions before you drive

FreeThe page is rebuilt every 10 minutes on a small server from public feeds, and it costs nothing to keep that way. No account, no app, no cookie.

Is this the official site status?

No. It is a forecast read against the rules the local schools teach. The site is run by the Fellow Feathers club and the Mussel Rock Park rangers; a closure, a ranger call or a school's own no overrides anything here.

Do I need a rating to fly here?

Mussel Rock is a P2 site with a site intro. Visiting pilots fly it through Paragliding San Francisco or Airtime of San Francisco, the two schools on the cliff, who give the intro and lend a radio on 147.495 MHz.

What if the fog is in?

Fog over the water is normal and pilots fly under it. Fog on the launch itself is the only fog that stops flying: you cannot see the beach or the sock. The forecast marks an hour no when low cloud is 80 % or more with visibility under 3 km.

What does too strong look like?

Above 19 mph at 10 m the pilots' dashboard turns amber and above 22 it turns red. The lower launches, Walker and Lemmings, take a wind the top of the cliff would refuse, which is why the launches are listed with their own arcs.

Does the tide matter?

Only for the landing: at a high tide above 5 ft the beach under the cliff is narrow, and the landing is the parking lot or the field. The next tides are in the meters above.

How high can I go?

The ceiling over Mussel Rock is 1,600 ft under the San Francisco Class B shelf. On a strong day the ridge lifts you there in minutes.

Where do the numbers come from?

HRRR, GFS and ECMWF through Open-Meteo, the National Weather Service hourly grid, the Weather Underground stations on the cliff through musselrockwx.com, NDBC buoy 46026, the KSFO and KHAF METARs and the NOAA tide station at the Golden Gate. Every feed is public and named at the foot of the page.

Today reads fly, 14h to 20h. Check the sock when you get there.

See today's hours Open the pilots' dashboard
Built by Michel Grolet, paraglider pilot. Last read Monday 14 September 2026, 03:40 PDT. Rebuilt every 10 minutes. Fly the sock, never the page.