ONLYCLAMS
NORTHERN CALIFORNIA · UPDATED DAILY · FREE FOREVER
LAST UPDATED: TUESDAY MAR 31, 2026 · 08:56 AM PDT
➕ JOIN THE MAILING LIST📍 TOMALES BAY, CA
> NO GREAT DAYS DETECTED IN NEXT 10 DAYS...
> KEEP WATCHING THE TIDES. 🦪
📍 HALF MOON BAY, CA
> NO GREAT DAYS DETECTED IN NEXT 10 DAYS...
> KEEP WATCHING THE TIDES. 🦪
◈ HOW WE PICK A GREAT DAY
| 🗓️ DAY OF WEEK | Friday, Saturday, Sunday, or Monday only We skip the work week — weekends are for clamming. |
| 🌡️ WEATHER | Daily high temperature ≥ 55°F Life's too short to dig clams in the cold. |
| 💨 WIND | Max wind speed < 12 mph Nobody wants to dig clams in a gale. |
| 🌊 TIDE | At least one low tide below -0.5 ft MLLW between sunrise and sunset Deeper negative tides mean more beach exposed — better clamming. |
◈ LOCATIONS WE TRACK
TOMALES BAY, CA
NOAA STATION #9415020
HALF MOON BAY, CA
NOAA STATION #9414290
◈ GET THE WEEKLY FORECAST
Sign up for free and get an email every Wednesday when great clamming days are spotted. Share it with your crew! 🦪
➕ JOIN THE MAILING LIST